CONDUCTIVITY + ph. ORION STAR A215 BENCHTOP ph/conductivity METER

CONDUCTIVITY + ph ORION STAR A215 TOP ph/conductivity METER Reads out conductivity, resistivity, salinity, TDS, ph, and temperature Bright LCD display with ready indication Automatic or manual temperature compensation Accepts either 4-electrode or 2-electrode cells (conductivity) ph calibration: accepts from 1 to 5 points with either automatic or manual temp compensation IP54 dustproof and splashproof 2000-point datalogger downloadable to printer or computer Three-year replacement warranty AC adapter included* *Can also be operated with four AA batteries (not included) ph Range 0.0 to 14 Resolution 0.1/0.01/0.001 Relative Accuracy ± 0.002 Conductivity Range Resistivity Salinity TDS 0.00 to 3000 ms/cm 2 Ohms to 100 Megohms 0.01 to 80.0 ppt NaCl equivalent 0 to 200 ppt Reference Temperature 5, 10, 15, 20, 25 C Temperature 5 to 105 C ORION STAR A215 Benchtop ph/conductivity Meter/Accessories NCL # Price Meter and electrode holder MA-1117 1259.10 ph/conductivity Kit: meter, electrode holder, O-8157 ph/atc triode, CO-305 conductivity cell, buffers, conductivity standard, storage and cleaning solutions MA-1117A 1816.20 Conductivity cell, 4-electrode with 1.5 m (4.5 ft.) cable CO-305 512.05 ROSS Ultra epoxy refillable ph/atc triode O-8157 549.10

CONDUCTIVITY + ph PORTABLE ORION STAR A325 PORTABLE ph/conductivity METER Reads out conductivity, resistivity, salinity, TDS, ph, and temperature Bright LCD display with ready indication Automatic or manual temperature compensation Accepts either 4-electrode or 2-electrode cells (conductivity) ph calibration: accepts from 1 to 5 points with either automatic or manual temperature compensation IP54 dustproof and splashproof 5000-point datalogger downloadable to printer or computer Three-year replacement warranty Operates with four AA batteries (included)* *Optional AC adapter available ph Range 0.0 to 14 Resolution 0.1/0.01/0.001 Relative Accuracy ± 0.002 Conductivity Range 0.000 to 3000 ms/cm Resistivity 2 Ohms to 100 Megohms Salinity 0.01 to 80.0 ppt NaCl equiv. TDS 0 to 200 ppt Reference Temp. 5, 10, 15, 20 or 25 C Temperature 5 to 105 C ORION STAR A325 Portable ph/conductivity Meter/Accessories NCL # Price Meter only MA-1217 1095.00 ph/conductivity Kit: meter, O-8107 ph/atc triode, conductivity cell, buffers, conductivity standard, storage and rinse solutions, hard carrying case MA-1217A 1868.00 Gel-filled epoxy ph/atc triode with 3 m (9 ft.) cable O-8107 482.60 Optional AC adapter for above OA-103 66.80 Hard carrying case for Orion STAR Portable Meter Series HC-222 138.00 Soft carrying case for Orion STAR Portable Meter Series SC-333 142.50 Rubber meter boot for Orion STAR Portable Meter Series RMB-444 104.00 Order Toll Free 1.800.648.7836 www.nclabs.com

DO + ph ORION STAR A216 TOP ph/rdo/do METER Measures DO, ph, and Temp Bright LCD display with ready indication IP54 dustproof and splashproof Autoread/hold function 2000-point datalogger which is downloadable to printer or computer via an optional RS232 or USB interface accessory Three-year replacement warranty AC adapter included* * Can also be operated with four AA batteries (not included) DO Automatic barometric pressure compensation Can be calibrated to Winkler value Stability indicator ph Automatic or manual calibration (1 to 5 points) Automatic buffer recognition Specifications DO ph Concentration Relative Accuracy 0.00 to 90.00 mg/l 0.2 mg/l Range 0.0 to 14 Resolution 0.1 / 0.01 / 0.001 % Saturation 0.0 to 600 Relative Accuracy ± 0.002 Salinity Factor Barometric Pressure 0 to 45 ppt 450-850 mm Hg Temperature 5 to 105 C ORION STAR A216 Benchtop ph/rdo/do Meter/Accessories NCL # Price Meter and electrode holder DA-1116 1381.50 ph/do Kit: meter, electrode holder, O-8157 ph/atc triode, O-083005 polarographic DO probe w/ calibration sleeve, buffers, storage and cleaning solutions, DO probe maintenance kit, BOD funnel stirrer and adapter* DA-1116A 2415.60 ROSS Ultra epoxy refillable ph/atc triode O-8157 549.10 Polarographic DO probe 1.5 m (4.5 ft.) cable O-083005 711.90 * Probe included in this package is a polarographic probe. At publication time Orion does not have an optical lab DO probe that fits this meter. Order Toll Free 1.800.648.7836 www.nclabs.com

DO + ph PORTABLE ORION STAR A326 PORTABLE ph/rdo/do METER Measures DO, ph, and Temp Displays one, two, or all three parameters at once Bright LCD display with ready indication IP67 waterproof Autoread/hold function 5000-point datalogger which is downloadable to printer or computer via an optional RS232 or USB interface accessory Three-year replacement warranty Operates with four AA batteries (included)* *Optional AC adapter available DO Automatic barometric pressure compensation Stability indicator Salinity correction ph Automatic or manual calibration (1 to 5 points) Automatic buffer recognition DO ph Concentration 0.00 to 90.00 mg/l Relative Accuracy 0.2 mg/l % Saturation 0.0 to 500 Salinity Factor 0 to 45 ppt Barometric Pressure 450-850 mm Hg Temperature 5 to 105 C Range 0.0 to 14 Resolution 0.1 / 0.01 / 0.001 Relative Accuracy ± 0.002 ORION STAR A326 Portable ph/rdo/do Meter/Accessories NCL # Price Meter only DA-1216 1122.30 Field ph/rdo/do Kit: meter, O-8107 ph/atc triode, O-087010 RDO probe, buffers, storage solution packets, hard carrying case Optional Probes for above meter DA-1216A 1994.40 Optical DO probe with 3 m (9 ft.) cable O-087010 723.60 Optical DO probe with 6 m (18 ft.) cable O-087020 771.30 Optical DO probe with 10 m (30 ft.) cable O-087030 801.00 Optical DO probe with 15 m (45 ft.) cable O-087050 868.50 Optical DO probe with 30 m (100 ft.) cable O-087100 1046.70 Meter and Probe Accessories Replacement optical cap for above probes O-087001 108.00 Replacement probe guard O-087002 368.60 Calibration sleeve O-087003 143.45 Optional AC adapter for above OA-103 66.80 Hard carrying case for Orion STAR Portable Meter Series HC-222 138.00 Soft carrying case for Orion STAR Portable Meter Series SC-333 142.50 Rubber meter boot for Orion STAR Portable Meter Series RMB-444 104.00

PORTABLE Smartphone/tablet-compatible ph tester BLUETOOTH Enabled ph and Temperature Pen for use with your mobile device * Accuracy of ± 0.01% of ph * Proprietary Sensor Design * 1, 2 an 3-point calibration * Automatc Temperature Compensation Temperature Readout * Waterproof * Powered by 1 N Type battery (included) * Measurement and Calibration storage with time, date and location. * Export stored measurement data via email. NEW COMES WITH: Pocket Tester Pen Battery (installed) Protective Cap Scoop Pocket Clip Holster Lanyard Operating Instructions ph tester BT-2 375.00/ea Replacement ph module RPT-2 56.50/ea SPECIFICATIONS System Requirements Measurement Range Accuracy (After Wet Calibration) Repeatability Resolution Time to Reading Stabilization Active Mode Power Consumption Requires mobile device operating with Apple ios 6 or ios 7. App is optimized for ios 7 00.00 14.00 ph; Temperature: 0-71 C/32-160 F ± 0.01 ph; Temperature ± 0.1 C; ± 0.1 F ± 0.01 ph; Temperature ± 0.1 C; ± 0.1 F 0.01 ph; Temperature ± 0.1 C; ± 0.1 F 10-30 seconds Active Mode 137 ma, Sleep Mode 2 μa Temperature Compensation Automatic to 25 C Physical Dimensions Weight Case Material Battery Type Calibration Standard Solution 17.15 cm L x 1.59 cm D or 6.75 in. L x.625 in. D 54 g or 1.94 oz. Anodized Aircraft Aluminum with Protective Coating N type, Alkaline 1.5 V 4.0 ph, 7.0 ph, 10.0 ph Operating/Storage Temperature 55 C/32-131 F Water Resistance IP67 and NEMA 6 MEASUREMENT MODES Mode Hold LIVE Method of Measurement Once stabilized, the readings are captured then displayed Real-time readings are displayed continuously during measurement Order Toll Free 1.800.648.7836 www.nclabs.com

ph GENERAL INFORMATION TERMINOLOGY Probe vs. electrode : Usually, they mean the same thing. Sometimes electrode is used to refer to the positive or negative part of the probe, which causes some confusion. That is why we use the term probe to refer to the entire unit. ph Combination probe: ph and reference parts combined into one probe. Note that this DOES NOT include temperature. ATC probe: Automatic Temperature Compensation probe. This probe measures temperature only. 3-in-one probe: A probe which incorporates a ph probe, reference probe and an ATC probe. The ph part may be gel-filled or refillable. Triode: Thermo Scientific Orion s trademarked name for a 3-in-one probe. Refillable probe: A probe which has a hole to extract and refill internal filling solution. Gel-filled probe: A sealed probe which does not allow the internal filling solution to be changed. It does not contain a gel. In most cases, it contains the same filling solution as its refillable counterpart. Sure-Flow TM probe: Everybody knows they are supposed to change the fill solution in their ph probe, but few do it as often as they should. Sure-Flow technology makes it a snap to flush out your old solution and clean the reference junction at the same time. Simply pressing down on the cap flushes the junction and empties the fill solution from the electrode. The Sure-Flow feature is available on several styles of electrodes, including the ROSS Line. Ross TM probe: Ross electrode technology has been patented by Thermo Scientific Orion. These electrodes have extremely fast response times in solutions with low ionic content such as drinking water and final effluent when compared to other electrodes. ROSS electrodes are available with or without a Sure-Flow feature. ph pen: A quick and dirty way to estimate ph for screening purposes. As with ph paper, the ph pen should NEVER be used for reporting purposes.

ph GENERAL INFORMATION A ph meter (even if it includes temperature and millivolts) is good for ph only. In theory, you could run ISE measurements (such as Ammonia and Total Residual Chlorine) if the meter has a millivolt mode, but you would have to graph every calibration. This is so tedious that very few technicians do this. So you may wish to consider a ph/ise meter if there is a chance that you will need ISE capabilities in the future. Otherwise, you will have to purchase an additional ISE meter. GOOD LABORATORY PRACTICE Good laboratory practice requires you to calibrate your probe with AT LEAST two buffers or standards. Some procedures and/or regulatory agencies may require a three-point calibration. All probes should be calibrated at least every day that they are used. If they are used for more than four hours in succession, they should be recalibrated. This is good laboratory practice, and holds true regardless of what brand of meter and probe you have. Buffers, as well as samples, should be stirred during calibration and measurement. This means with a stir plate, not by swishing the probe around with your hand. Stirring at a uniform low-tomedium speed will increase the response speed, as well as the accuracy, of any ph probe. MAINTENANCE Normally meters do not require any maintenance. The advantage of gel-filled probes is that no maintenance is required. The disadvantage is that no maintenance is possible. As a ph probe ages, the response slows, just like with people. With a ph probe, the slowing response is usually due to the filling solution being contaminated or depleted of ionic strength. With a sealed ( gelfilled ) probe, there is nothing you can do about this, except replace the probe. With a refillable probe, you can remove the old filling solution and replace it with fresh filling solution. We make the following recommendations: 1. Those of you who actually read the probe manuals know that most manuals recommend changing the filling solution once a week. Many people change it never. Let s split the difference and make sure the filling solution is changed once a month. This should be sufficient for most applications. 2. Changing means removing as much of the old solution as possible. Our NCL# PF-5 transfer pipet is helpful for that purpose. Note that changing does not mean merely adding new solution to replenish for evaporation. Doing this will result in crystallization at the bottom of the probe, eventually plugging the reference junction and slowing or stopping the response. 3. Always use the correct filling solution for the specific probe. DO NOT use Thermo Scientific Orion filling solution for a Corning probe, or YSI filling solution for a Thermo Scientific probe, or any other combination. Even if you THINK it is all the same-it isn t. Always use fresh filling solution-not something you found in a drawer. For some reason, many manufacturers do not usually give an expiration date for filling solutions on their label. In no case should filling solution be used if it is over two years old. 4. If you decide to clean your ph probe, consider the following: A. Changing the filling solution and using fresh buffers usually does more to improve a ph probe s performance than does cleaning. B. Always use the exact cleaning procedure for your particular probe as described in the probe manual, paying close attention to the soak times. If the manual says 2 minutes, it means two minutes, not ten. There are some that figure the manual says two minutes, but my probe is really dirty, so I ll leave it in 10 minutes. We really like people who think like this because they buy a lot of replacement probes. Order Toll Free 1.800.648.7836 www.nclabs.com

ph GENERAL INFORMATION SLOW RESPONSE A ph probe s response time is judged by the length of time it takes to get a stable reading in a buffer NOT A SAMPLE! A buffer is a solution that is high in ionic strength and is formulated to resist a change in ph. A ph probe should stabilize in a uniformly stirred buffer within one minute, preferably less. However, it is NORMAL for a ph probe to take 10 minutes or more to stabilize in an unbuffered solution of LOW ionic strength, such as drinking water, final effluent, or lab-pure water. In one of our tests, it took 46 minutes to reach a stable reading in deionized water. This is normal. What can you do to speed up a probe s response? A. Stir, using a stir-plate - don t swish it with your hand. B. Change the filling solution at least once a month. C. Buy a better probe. Ross probes are faster and more accurate than economyline probes. Isfet (solid state) ph probes are fast, but lose their calibration quickly, sometimes within 15 minutes. You get what you pay for. The cheapest probes are slower responding and less accurate than the expensive ones. There is no way around this. PACKAGING: WHAT S INCLUDED Manufacturers are making life difficult again with several different packages for every meter. For example: with or without probe, electrode holder, cases, etc. When comparing our prices with our competitors, be sure to consider what is included in each package. Note: Thermo Scientific Orion has discontinued all US Standard meters and probes.

ph ORION STAR A111 TOP ph METER ph Range 0.0 to 14 Resolution 0.1 / 0.01 Relative Accuracy ±0.01 Temperature 5 to 105 C mv Range/Resolution ± 1600.0 / 0.1 Measures ph, mv, and Temp Ready indication Up to 3 point ph calibration Automatic buffer recognition IP54 dustproof and splashproof 50-point datalogger Three-year replacement warranty AC adapter included* * Can also be operated with four AA batteries (not included) ORION STAR A111 Benchtop ph Meter/Accessories NCL # Price Meter and electrode holder PA-1111 511.10 ph Kit: meter, electrode holder, O-9157BNMD refillable ph/atc triode, ph buffers, storage and cleaning solution PA-1111A 716.40 Refillable epoxy ph/atc triode O-9157BNMD 359.10 ORION STAR A211 TOP ph METER Measures ph, mv, and Temp Bright LCD display with ready indication Automatic or manual calibration (1 to 5 points) IP54 dustproof and splashproof 2000-point datalogger which is downloadable to printer or computer via an optional RS232 or USB interface accessory Three-year replacement warranty AC adapter included* * Can also be operated with four AA batteries (not included) ORION STAR A211 Benchtop ph Meter/Accessories NCL # Price Meter and electrode holder PA-1112 754.20 ph Kit: meter, electrode holder, O-8302 ph/atc triode, buffers, storage and cleaning solutions ROSS glass refillable ph/atc triode PA-1112A 1026.00 O-8302 524.70 ph Range 0.0 to 14 Resolution 0.1 / 0.01 / 0.001 Relative Accuracy ± 0.002 Temperature 5 to 105 C mv Range/Resolution ± 2000.0 / 0.1 Order Toll Free 1.800.648.7836 www.nclabs.com

ph EDGE - ph METER This new innovative ph meter from Hanna Instruments is thin ( 1 / 2 ), and lightweight (9 oz.). Features include a large, easy to read (5.5 ) LCD display; CAL-CHECK to warn if probe or buffers are bad and two USB ports. METER KIT INCLUDES: Flat screen ph meter ph/temp triode Electrode arm Wall-mount bracket USB cable AC adapter Buffer & electrode storage packets ph resolution: 0.01 or 0.001 mv resolution: 0.1 mv Temperature readout ( C or F) Automatic temperature compensation Datalogging: Manual: 1000 points On Stability: 200 points On intervals: 600 points Accepts up to 5 calibration points Buffer recognition: 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, and 12.45 Power supply: 5 VDC (adapter included) Warranty: Meter: 2 years Probes: 6 months HI-202 409.00/ea REPLACEMENT EDGE ph ELECTRODE Glass body, double junction, refillable ph electrode with temperature sensor. HI-113 145.00/ea REPLACEMENT EDGE ph ELECTRODE PEI body, double junction, gel-filled ph electrode with temperature sensor. HI-123 105.00/ea

ph Hanna Edge Bluetooth ph system NEW Compatibility/System Requirements Android: Compatible with most devices equipped with Bluetooth Smart Technology (Bluetooth 4.0) and running Android 4.3 or later. ios Compatible with ipad (3rd generation or newer) iphone (4S or newer) ipod Touch (5th generation or newer) Download Information Hanna Lab App is available free from the Play Store or App Store. Edgeblu includes benchtop docking station with electrode holder, wall mount cradle, USB cable, glass body, gel-filled ph electrode with temperature sensor, 5 VDC power adapter, and instruction manual. Order Toll Free 1.800.648.7836 www.nclabs.com

ph Hanna Edge Bluetooth ph system This system is the bluetooth version of the Hanna Edge ph meter. Free yourself from wires when performing ph measurements. Hanna Instruments is proud to introduce Edgeblu, a ph meter that uses ph electrodes with Bluetooth Smart technology (Bluetooth 4.0). These ph electrodes connect wirelessly to Edgeblu or a compatible Apple or Android device running the Hanna Lab App. * Edgeblu uses HALO Bluetooth ph electrodes with a built-in temperature sensor to send measurement data wirelessly to the meter or a compatible Apple or Android device running the Hanna Lab App. * Edgeblu features advanced ph electrode diagnostics to ensure worry free measurements. Diagnostics include Hanna s exclusive CAL Check feature that alerts users to potential problems during calibration. * Edgeblu features a capacitive touch keypad that gives a distinctive, modern look. The keypad is sensitive enough to be used with laboratory gloves and has a fast response. HALO ph electrodes with Bluetooth Smart Technology Each Edgeblu is supplied with a HALO Bluetooth ph electrode. The Halo uses Bluetooth Smart Technology (Bluetooth 4.0), which is energy efficient and allows the probe to operate on 1 CR2032 battery for approximately 500 hours. The HALO ph electrode is a double junction, gel-filled, glass body ph electrode with a built-in thermistor temperature sensor. All readings are automatically compensated for temperature variations. The HALO ph electrode transmits measurement data directly to Edgeblu or a compatible Apple or Android device. All HALO ph electrodes are auto-detected providing ph sensor type, calibration data and serial number when connected. The HALO ph electrode also features a blue LED ring that changes flashing frequency based on whether it is in discovery mode or when it is connected to the Edgeblu or compatible device. The button located on the HALO ph probe is used to place it in discovery mode or to log data directly to the Edgeblu or compatible Apple or Android device. NEW HI-2B 599.00/ea Replacement HALO Bluetooth gel-filled electrode HI-11102 180.00/ea

ph ECONOMY TOP ph/mv/temp METER Large, easy to read LCD display Displays ph and Temp at the same time Automatic 1 or 2 point calibration 0.01 resolution Meter package includes refillable ph probe, one 30 ml bottle of filling solution, temperature probe, and probe holder. Description NCL # Price/ea Meter Package HI-2211 439.00 ph Probe HI-1131B 130.00 Temp Probe HI-76692W 70.00 Probe Holder HI-76404 79.00 Electrode Storage Solution HI-7030 14.00 Order Toll Free 1.800.648.7836 www.nclabs.com

ph YSI 1200 LABORATORY ph/mv/temperature METER Simple, user-friendly operation An excellent benchtop ph meter for the small wastewater lab. Can be calibrated to ph 4, 7, and 10 buffers using 1, 2, or 3-point calibrations (cannot be calibrated to any other buffers). Features: ph probes are low-maintenance gel-filled probes Automatic, locking end-point can be easily turned on and off Easy-to-read keypad and large backlit LCD display Can be operated with AC wall power or batteries SPECIFICATIONS Range Resolution Accuracy ph 0.00 to 14.00 0.01 ± 0.01 mv -1999.9 to 1999.9 0.1 ± 0.05%, ± 1 Temp. 0.0 to 100 C 0.1 C ± 0.2 C YSI ph1200 Meter Only YSI-1200 517.75/ea YSI ph1200 ph/mv Electrode (gel-filled) YSI-201 57.00/ea YSI ph1200 ph/mv/temp Comb (gel-filled) YSI-203 142.50/ea

ph PORTABLE ORION STAR A121 PORTABLE ph METER Measures ph, mv, and Temp Ready indication Up to 3 point ph calibration Automatic buffer recognition IP67 dustproof and splashproof 50 point datalogger Three-year replacement warranty Operates with four AA batteries (included)* *Optional AC adapter available ph Range 0.0 to 14 Resolution 0.1 / 0.01 Relative Accuracy ± 0.01 Temperature 5 to 105 C mv Range/Resolution ± 1600.0 / 0.1 ORION STAR A121 Portable ph Meter/Accessories NCL # Price Meter only PA-1210 473.10 ph Kit: meter, O-9107BNMD ph/atc triode, buffers, storage and cleaning solutions, hard carrying case PA-1210A 759.60 Gel-filled epoxy ph/atc triode O-9107BNMD 256.50 Optional AC adapter for above OA-103 66.80 Hard carrying case for Orion STAR Portable Meter Series HC-222 138.00 Soft carrying case for Orion STAR Portable Meter Series SC-333 142.50 Rubber meter boot for Orion STAR Portable Meter Series RMB-444 104.00 Order Toll Free 1.800.648.7836 www.nclabs.com

ph PORTABLE ORION STAR A221 PORTABLE ph METER Measures ph, mv, and Temp Bright LCD display with ready indication Automatic or manual calibration (1 to 5 points) IP67 waterproof (may be immersed for up to one hour with no water incursion) 1000 point datalogger which is downloadable to printer or computer via an optional RS232 or USB interface accessory Three-year replacement warranty Operates with four AA batteries (included)* *Optional AC adapter available ph Range 0.0 to 14 Resolution 0.1 / 0.01 / 0.001 Relative Accuracy ± 0.002 Temperature 5 to 105 C mv Range/Resolution ± 2000.0 / 0.1 ORION STAR A221 Portable ph Meter/Accessories NCL # Price Meter only PA-1212 522.00 ph Kit: meter, O-8107 ph/atc triode, buffers, storage and rinse solution packets, hard carrying case PA-1212A 1020.60 Gel-filled epoxy ph/atc triode with 3 m (9 ft.) cable O-8107 482.60 Optional AC adapter for above OA-103 66.80 Hard carrying case for Orion STAR Portable Meter Series HC-222 138.00 Soft carrying case for Orion STAR Portable Meter Series SC-333 142.50 Rubber meter boot for Orion STAR Portable Meter Series RMB-444 104.00

ph PORTABLE YSI EcoSense ph/mv/temp METER This ph meter is YSI s economy version of a portable ph/mv/temp meter. It features a watertight housing, internal buffer recognition, auto/manual temperature compensation, low battery indicator, and auto hold of readings. The instrument has a one year warranty. Probes are available for purchase separately. YSI-100A (meter only) 251.75/ea Range Resolution Accuracy Temp. -10 to +120 C 0.1 C ± 0.3 C ph -2 to 16 units 0.01 unit ± 0.1% mv -1999 to +1999 mv 1 mv ± 0.1% PROBES FOR THE YSI-100A Description NCL # Price/ea Waterproof ph/temp probe with 3 ft. cable DY-1001 99.75 Waterproof ph/temp probe with 12 ft. cable DY-1004 128.25 SOFT-SIDED CARRYING CASE Includes a velcro-grip strap to hold the meter in place, an open area for cables, membrane kits, and elastic compartments for miscellaneous. YSI-485 32.00/ea Order Toll Free 1.800.648.7836 www.nclabs.com

ph PORTABLE ECONOMY HAND-HELD ph/mv/temp METER Heavy duty waterproof design Large LCD readout in a low-profile case Displays ph and Temp at the same time Automatic 1 or 2 point calibration out of 5 stored buffers (4.01, 6.86, 7.01, 9.18, and 10.01) 0.01 resolution Meter package includes meter, ph probe, ATC probe, ph 4 & 7 buffer solutions, 100 ml plastic beaker, manual and rugged carrying case. Description NCL # Price/ea Meter package PH-9125 420.00 ph probe HI-1230B 95.00 Temp probe HI-76692W 70.00 DIGITAL ph/temp METER FOR PLATING BATHS Digital waterproof meter has stainless steel probe (not submersible) with 3 ft. cable. Shows ph and Temp simultaneously. ph range -2.00 to 16.00, Temp range -5.0 to 105.0 C (23 to 221 F). Meter can be switched between C and F. ph resolution is 0.01 and accuracy is ± 0.02. Temp resolution is 0.1 and accuracy is ± 0.5 up to 60 C and ± 1 above that. Automatic temperature compensation. Features automatic calibration using 2 buffers (any two of 4.00, 7.00, and 10.00). Powered by three 1.5 V batteries. Package includes meter, probe, batteries, instruction manual, and carrying case. DIN Connector. Description NCL # Price/ea Meter package PH-131 420.00 Replacement probe PH-911 150.00 Shock-proof boot PH-007 26.00

ph PORTABLE YSI EcoSense ph/temperature PEN The EcoSense ph10a is the perfect instrument for economical spot sampling of ph and temperature. Available with single- or dual-junction electrodes (single included). No need to throw this pen away when the sensor goes bad like some other products. Simply replace the electrode and resume testing within minutes. Features: IP67 Waterproof housing Automatic calibration and buffer recognition 50-set memory 1, 2, or 3-point calibration 200 hour battery life 1-year meter warranty; 6-month electrode warranty Description NCL # Price/ea Meter with single-junction electrode YSI-10 110.00 Replacement electrode, single-junction YSI-113 55.00 Replacement electrode, dual-junction YSI-116 98.00 Range Resolution Accuracy ph 0.00 to 14.00 units 0.01 units ± 0.1 unit within 10 C, ± 0.2 unit within 20 C Temp. 0.0 to 100.0 C 0.1 C ± 0.3 C YSI EcoSense ORP/TEMPERATURE PEN The EcoSense ORP15A offers accurate, low-cost measurement of ORP and temperature. Features: IP67 Waterproof housing Absolute and relative readings Replaceable electrodes 50-set memory 200 hour battery life 1-year meter warranty; 6-month electrode warranty Description NCL # Price/ea Meter only YSI-15A 158.65 Replacement ORP sensor YSI-112 75.00 Range Resolution Accuracy ORP -1100 to +1100 mv 1 mv 1 mv ± 1 LSD Temp. -10 to 100 C 0.1 C ± 0.3 C Order Toll Free 1.800.648.7836 www.nclabs.com

ph PORTABLE POCKET ph TESTERS BARGAIN HUNTERS NOTE: As with most other things in life, you get what you pay for when it comes to lab equipment. Pocket ph testers do NOT take the place of a ph meter. They are useful for screening of samples only. They SHOULD NOT be relied upon for reportable results. Features: phep 4 & phep 5 Waterproof, can be fully immersed in water Display ph/temp at the same time Replaceable ph electrode Stability indicator Auto shut-off Automatic 1 or 2 point calibration using 4, 7, and 10 buffers Automatic temperature compensation Supplied with protective cap, electrode removal tool, batteries, and instructions NCL # PH-127 PH-128 ph Range 0.0 to 14.0 0.00 to 14.00 ph Resolution 0.1 0.01 ph Accuracy ± 0.1 ± 0.05 Price 89.00/ea 98.00/ea REPLACEMENT ph SENSOR FOR THE ABOVE PH-128A 55.00/ea phep 4 phep 5

ph + ISE (2 INPUTS) Although the VERSA STAR is considered a Multiparameter meter, it is also our strong recommendation as a ph/ise meter. It has a superior display and is very user-friendly. The VERSA STAR can accommodate up to 4 inputs (ph/ise, DO, conductivity) in any combination. We offer a package including the VERSA STAR meter with two ph/ise modules. Additional modules may be purchased at any time. See page 147 for additional VERSA STAR packages. ORION VERSA STAR 90 ph/ise TOP METER Display can be customized to show only what you choose Plain language screen prompts 2000-point datalogging (non-volatile memory) Two USB and one RS232 bi-directional ports Two stirrer ports IP-54 splashproof Three-year meter warranty Operates with included power adapter ph Range -2.000 to 20.000 Resolution 0.1/0.01/0.001 Calibration Points up to 5 ISE Range 0 to 19999 Resolution Calibration Points up to 5 up to 4 significant digits ORION VERSA STAR ph/ise Meter/Accessories NCL # Price Meter, electrode holder, two ph/ise/temperature modules MA-40B 1989.00 Orion VERSA STAR ph/temperature module VS-1P 541.50 Orion VERSA STAR ph/ise/temperature module VS-4I 963.00

ph + ISE (2 INPUTS) ORION DUAL STAR METER 2-channel (2 input) ph/ise meter Use one channel for ph and the other for ISE measurements, or both channels for ISE measurements. Displays the results on both channels simultaneously USB and RS232 data ports 1000 point datalogger with time & date stamp Calibration graph with slope data for viewing or printing Calibrations with up to 5 points possible Three-year warranty DUAL STAR ph/ise METER ONLY PO-2115 1521.00/ea DUAL STAR METER WITH ROSS ULTRA Includes meter, O-8102U probe, electrode stand, 927007MD ATC probe, and RS232 cable. PO-2115A 1809.00/ea ph mv ISE Range 0.0 to 14-1999 to 1999 0 to 19999 Resolution 0.1, 0.01, 0.001 0.1 1, 2, or 3 significant digits Relative Accuracy ± 0.002 ± 0.2 0.05% DUAL STAR ph/ise METER KIT Includes meter, O-8102U probe, electrode stand, 927007MD ATC probe, and RS232 cable. Also includes one pint each of ph 4, ph 7, ph 10 buffers, and ph electrode storage solution. PO-2115B 1849.50/ea *Due to its popularity, Orion has not changed this model. Order Toll Free 1.800.648.7836 www.nclabs.com

ph + ISE (2 INPUTS) DUAL CHANNEL ph/ise METER Research grade laboratory benchtop meter features a 240 x 320 dotmatrix color display. The large LCD screen allows easy navigation through menus and options without having to consult the manual. For ph, the meter features a 5 point calibration with a choice of custom or standard buffers and provides the user with the exclusive Calibration Check diagnostic system. For ISE measurements, the meter allows direct calibration and measurement. Meter accepts up to 5 point calibration; choose from 5 fixed standard solutions and 5 user defined standards. Displays one or both channels Automatic endpoint detection Displays offset and slope 50,000-point datalogger Datalog on command, or by user-set intervals PC Connection Opto-isolated USB and RS232 Manual or automatic temp compensation Meter package includes meter, glass body refillable ph electrode, temperature probe, AC adapter, electrode holder, and probe filling solution. HI-4222 1305.00/ea Range Resolution Relative Accuracy ph -2.00 to 16.00 0.1, 0.01, 0.001 ± 0.1, 0.01, 0.002 mv -2000 to 2000 0.1 ± 0.2 Temperature -20.0 to 120.0 C 0.1 C ± 0.2 C ISE 1 x 10-7 to 9.99 x 10 10 1, 0.1, 0.01 ± 0.5%, ± 1.0%

ph + ISE (2 INPUTS) YSI s new affordable ph/ise lab meters are available with or without an internal printer. Internal printer allows for GLP documentation of calibrations and readings. Meter also has a USB port for transferring data to a PC. YSI TruLab ph/ise 1320 Meter Easy to read back-lit display Easy calibration with adjustable calibration timer Automatic temperature compensation (ph only) 1-5 point ph calibration possible 1-7 point ISE calibration possible Blank correction feature GLP compliant 3 Year Warranty YSI-1320 1515.25/ea YSI TruLab ph/ise 1320P Meter with Printer Same features as the 1320 meter, plus a built-in printer! 3 Year Warranty Printer Paper for YSI-1320P TruLab Meter YSI-115Y NEW 10.00/rl YSI-1320P 1705.25/ea TruLine ph 17 Single junction, combination, refillable, glass shaft, 1 meter cable, BNC connector TruLine ph 25 Single junction, combination, gel-filled, epoxy shaft, 1 meter cable, BNC Connector YSI-351 156.75/ea YSI-353 118.75/ea TruLine IoLine - 3 in 1 Triple junction, self-flushing platinum junction, 3 in 1, refillable, glass shaft, 1 meter cable, BNC connector YSI-358 451.25/ea TruLine ORP 51 Single junction, gel electrolyte, epoxy shaft, 1 meter cable, BNC Connector YSI-352 175.00/ea ScienceLine Temp 135 Temperature sensor, Stainless Steel, 120 mm, 2 banana plugs, NTC 30 kohm ScienceLine Temp 136 Temperature sensor, Glass, 120 mm, 2 banana plugs, NTC 30 kohm YSI-363 256.50/ea YSI-364 218.50/ea Order Toll Free 1.800.648.7836 www.nclabs.com

ph + ISE (2 INPUTS) Available ISE Probes TruLine Ammonium Electrode Kit TruLine Ammonium Laboratory Electrode Kit, includes refillable ammonium combination ISE with PVC membrane and replaceable sensor module, epoxy body, double-junction reference, 3 foot cable, BNC Connector. Range: 0.02-1,800 mg/l YSI-0371 650.75 Truline Ammonia Electrode Kit TruLine Ammonia Laboratory Electrode Kit, includes gas-sensing ammonia combination ISE, replaceable/refillable membrane, double junction reference, 3 foot cable and BNC Connector. Range: 0.02-17,000 mg/l YSI-0365 546.25 Truline Calcium Electrode Kit TruLine Calcium Laboratory Electrode Kit, includes PVC membrane, refillable Calcium Combination ISE, replaceable sensor module, epoxy body, double-junction reference, 3 foot cable, BNC Connector. Range: 0.02-40,000 mg/l YSI-0387 769.50 Truline Chloride Electrode Kit Truline Chloride Laboratory Electrode Kit includes solid state, refillable Chloride Combination ISE, epoxy body, double-junction reference, 3 foot cable, BNC Connector. Range: 1.8-35,500 mg/l YSI-0393 641.25 Truline Copper Electrode Kit Truline Copper Laboratory Electrode Kit, includes solid state, refillable Copper Combination ISE, epoxy body, double-junction reference, 3 foot cable, BNC Connector. Range: 0.6-6,400 mg/l YSI-0445 821.75 Truline Fluoride Electrode Kit Truline Fluoride Laboratory Electrode Kit, includes LaF Crystal type, refillable Fluoride Combination ISE, epoxy body, double-junction reference, 3 foot cable, BNC Connector. Range: 0.02 mg/l - saturation YSI-0406 627.00 Truline Nitrate Electrode Kit Truline Nitrate Laboratory Electrode Kit, includes refillable, PVC membrane Nitrate Combination ISE with replaceable sensor module, epoxy body, double-junction reference, 3 foot cable, BNC Connector. Range: 0.4-62,000 mg/l YSI-0421 665.00 Truline Sodium Electrode Kit Truline Sodium Electrode Kit, includes refillable Sodium Combination ISE with glass sensor, epoxy body, double-junction reference, 3 foot cable, BNC Connector. Range: 0.1-23,000 mg/l YSI-0439 508.35

ph + ISE (1 INPUT) ORION STAR A214 TOP ph/ise METER WITH ONE INPUT Measures ph, ISE, mv, and Temp Bright LCD display with ready indication 1 to 5 point calibration Calibration editing function Automatic buffer recognition Reads concentration directly Point-to-point ISE calibration Automatic blank correction 2000-point datalogger which is downloadable to printer or computer via an optional RS232 or USB interface accessory IP54 dustproof and splashproof Three-year replacement warranty AC adapter included* * Can also be operated with four AA batteries (not included) ORION A214 ph/ise TOP METER WITH ELECTRODE HOLDER PA-1115 1180.80/ea Specifications ph ISE mv/orp Range 0.0 to 14 Resolution 0.1 / 0.01 / 0.001 Relative accuracy ± 0.002 Range 0 to 19999 Resolution 1, 2, or 3 significant digits Relative accuracy ± 0.2 mv or 0.05%, whichever is greater Units ppm, M, mg/l, %, ppb, or no units Resolution 0.1 Relative accuracy ± 0.2 mv or 0.05%, whichever is greater mv/rmv/eh ORP ± 2000.0 Temperature 5 to 105 C Order Toll Free 1.800.648.7836 www.nclabs.com

ph + ISE (1 INPUT) PORTABLE ORION STAR A324 PORTABLE ph/ise METER WITH ONE INPUT Measures ph, ISE, mv, and Temp Bright LCD display with ready indication 1 to 5 point calibration Calibration editing function Automatic buffer recognition Reads concentration directly Point-to-point ISE calibration Automatic blank correction 5000-point datalogger which is downloadable to printer or computer via an optional RS232 or USB interface accessory IP67 waterproof Three-year replacement warranty Operates with four AA batteries (included)* *Optional AC adapter available Specifications ph Range 0.0 to 14 Resolution 0.1 / 0.01 / 0.001 Relative Accuracy ± 0.002 ISE Range 0 to 19999 Resolution Relative Accuracy Units mv/rmv ± 2000.0 1, 2, or 3 significant digits ± 0.2 mv or 0.05%, whichever is greater ppm, M, mg/l, %, ppb, or no units Temperature 5 to 105 C ORION STAR A324 Portable ph/ise Meter/Accessories NCL# Price Meter only PA-1215 927.00 ph Kit: meter, electrode holder, O-8107 ph/atc triode, buffers, storage and rinse solutions, hard carrying case PA-1215A 1326.60 ROSS gel-filled epoxy ph/atc triode with 3 m (9 ft) cable O-8107 482.60 Optional AC adapter for above OA-103 66.80 Hard carrying case for Orion STAR Portable Meter Series HC-222 138.00 Soft carrying case for Orion STAR Portable Meter Series SC-333 142.50 Rubber meter boot for Orion STAR Portable Meter Series RMB-444 104.00