Hach pH Test Kit Hanna Multi-Parameter Meter pH Checker Hanna pHEP5 Hanna pHEP+
Hach pH
Test Kits
Hanna Multi-
Parameter Meter
Hanna pH
Hanna pHEP5
pH/Temp Meter
Hanna pHEP+
pH/Temp Meter
pH Test Kit Oakton pHTestersph meter pH Alert pH Buffers
LaMotte Wide Range
pH Test Kit
Oakton pHTesters Oakton pH 5+ pH Meter pH Alert pH Buffers
Solutions pH Test Strips Vital Sine Combo Combo
pH Electrode Storage
& Cleaning Solutions
pH Test Strips
and Papers
Vital Sine
pH Meter
Hanna Combo
pH / EC Meter
Oakton PCTestr 35
pH / EC Meter
Oakton ORP
Hanna ORP
ORP Solutions

ph meter
ph meter

Replaceable double junction electrode. Automatic Temperature Compensation (ATC). Push-button three-point calibration. Microprocessor-based. Auto buffer recognition Hold function; auto-off; error messages. Certifiable to IP67 standards. The OAKTON Double Junction pHTestr 10 floats! Unique double junction electrode design and increased reference gel volume give you significantly longer electrode life, especially in harsh applications. Automatic Temperature Compensation and three point push-button calibration provide high accuracy even under varying temperature conditions. The pHTester 30 is more accurate and also displays temperature in °C. Calibration Solutions and Storage Solution sold separately.

Code pHTester10 pHTester30
Range -1.0 to 15.0 pH -10.00 to 15.00 pH
Resolution 0.1 pH 0.01 pH
Accuracy 0.1 pH 0.01 pH
Calibration Up to three points US or NIST buffers (4.0, 6.86/7.0, 9.18/10.0)
Electrode Replaceable double junction
Waterproof & Dustproof (IP67) Yes
Operating Temperature 0 to 50°C (32 to 122°F)
Power Four 1.5 V batteries, Over 500 hours
Dimensions 6.5″ x 1.5″ dia (16.5 cm x 3.8 cm dia)
Shipping Weight 4.5 oz (125 g)
Meter Price $139.00 $169.00
Replacement Electrode $99.00 $99.00
Replacement Protective Cap $4.99 $4.99
Replacement O-Ring Set $3.99 $3.99

ph meter

This rugged, waterproof meter is low in price but packed with features. It is a high-quality pH meter that converts to an ORP meter with an inexpensive probe! The large LCD simultaneously shows pH (ATC) and temperature in °F or °C (Note: Does not read temperature in ORP mode). The internal microprocessor automatically recognizes buffer solutions when calibrating, has auto power off and a low battery indicator. Two-point pH calibration. The rubber boot protects the meter in the field, or it can be used to mount the monitor onto a wall (screw hole on top or magnet on the back); rubber protective boot, 9V battery and instructions included. ORP electrodes sold separately. Probes are 12 mm in diameter; cabled probes have a 39 inch cable. Meter measures 4.4" x 3.1" x 1.5", weighs 0.6 lb (260 g). One-year warranty on meter only. Calibration Solutions and Storage Solution sold separately.

Range: pH: 0-14.00 pH
ORP: -999 - 999 mV
Temp: 0 - 100 °C
Accuracy: pH: +/- 0.01 pH
ORP: +/- 2 mV
Temp: +/- 0.5 °C
Resolution: pH: 0.01 pH
ORP: 1 mV
Temp: 0.1 °C
#VS99: Vital Sine Meter with pH Electrode Discontinued
#VSPC: Vital Sine Replacement pH Electrode $79.00
#VSPW: Vital Sine ORP Electrode Discontinued

ph meter
HANNA Checker1 pH METER:

The HI98103 Checker 1 is an economical pH tester. The Checker 1 provides fast and accurate pH readings. The Checker 1 is easy to calibrate, and lightweight. The Checker1 features a large easy-to read LCD and simple 2 point calibration. The Hanna Checker1 is supplied with HI1270 combination pH electrode and 2 - 1.5V batteries with 3000 hours of battery life. Calibration Solutions and Storage Solution sold separately.

Range: 0.00-14.00 pH
Resolution: 0.01 pH
Accuracy @20°C: +/-0.2 pH
Calibration: Manual 2 points
Electrode/Probe: HI1270 (Included)
Battery Type/Life: 2 x 1.5V / 3000 Hours
Environment: 0 to 50°C (32 to 122°F)
Dimensions: 66 X 50 X 25 mm (2.6 X 2 X 1″)
Weight: 2.5 oz (70g)
#HI98103: Checker1 pH Meter $58.00
#HI1270: Replacement Electrode $42.00

ph meter

These easy-to-use pH pens from Hanna Industries are waterproof and will float. They feature automatic shut-off, temperature compensation, replaceable electrodes, hold function, battery level indicator, stability indicator and temperature readings in either °C or °F . Automatic Calibration at 1 or 2 points (pH 4.10 / 7.01 / 10.01 pH). One-year warranty on pens, six-month on electrodes. Batteries Included.
Caliabration Solutions and Storage Solution sold separately.

Manufacturer Product Flyer (pdf)

Range: 0.00-14.00 pH
0.00-60.0°C / 32.0-140°F
Resolution: 0.01 pH
0.1° / 0.1°F
Calibration: Automatic at 1 or 2 points
Electrode/Probe: HI73127 (Included)
Battery Type/Life: 4 x 1.5V / 350 Hours Continuous Use
Dimensions: 163 X 40 X 26 mm
Weight: 3.0 oz (85g)
#HI98128: pHEP5 pH/Temp Meter $145.00
#HI73127: Replacement Electrode $83.00
#HI73128: pH Probe Replacement Tool $19.00

combo meter

The new waterproof HI98129 & HI98130 Combo testers from Hanna are designed for high accuracy pH, EC/TDS and temperature measurements. No more switching meters to measure the pH and then the EC or TDS of a solution. At startup, Combo performs a self check then displays the remaining battery level to assure proper working condition. These testers also have a stability indicator and hold feature to prompt the user when to take the reading & freeze the display for easy and accurate recording. Calibration and temperature compensation is automatic, while the EC / TDS conversion factor and temperature coefficient factor () are user adjustable for application specific measurements. For calibration in pH, the user may choose between standard or N.I.S.T. buffer sets. The combo has a replaceable pH electrode cartridge with an extendable cloth junction as well as an EC/TDS graphite electrode, which resists contamination by salts and other substances that come in contact with the electrode. These new pH / EC / TDS / Temperature meters have a stainless steel temperature probe for faster and more precise temperature measurement. Fast, efficient, accurate and portable, the Combo pH, EC/TDS and temperature tester meets the requirements of your routine multi-measurements.

Choose your Combo according to the proper EC / TDS ranges for your application:

HI98129 Combo; EC - 0 to 3999 uS/cm; TDS - 0 to 2000 ppm with HI73127 pH electrode, 4 x 1.5V batteries and electrode replacement tool (HI73128).

HI98130 Combo; EC 0.00 to 20.00 mS/cm; 0.00 to 10.00 ppt with HI73127 pH electrode, 4 x 1.5V batteries and electrode replacement tool (HI73128).

Specification Data Sheet for HI98129 and HI98130

Manufacturer Flyer for HI98129 and HI98130

Note that calibration, storage and cleaning solutions are not included with the meter. Storage solution will be required to soak the meter prior to the first usage.

HI98129 HI98130
Range: EC 0 to 3999 uS/cm 0.00 to 20.00 mS/cm
Range: TDS 0 to 2000 ppm 0.00 to 10.00 ppt
Range: pH 0.00 to 14.00 pH
Range: Temperature 0.0 to 60.0 °C or 32.0 to 140.0 °F
Resolution: EC 1 uS/cm 0.01 mS/cm
Resolution: TDS 1 ppm 0.01 ppt
Resolution: pH 0.01
Resolution: Temperature 0.1 °C or 0.1 °F
Accuracy: EC/TDS 2% of Full Scale
Accuracy: pH 0.05
Accuracy: Temperature 0.5 °C or 1°F
Calibration: EC/TDS Automatic @ 1 point
Calibration: pH 1 or 2 points with 2 sets of memorized buffers: (pH 4.01, 7.01 & 10.01 or 4.01, 8.68 & 9.18)
Temperature Compensation: EC/TDS BETA () = adjustable from 0.0 to 2.4 per °C in increments of 0.1
Temperature Compensation: pH Automatic
EC / TDS Conversion Factor Adjustable from 0.45 to 1.00
Environment 0 to 50°C (32 to 122°F); R.H. 100%
Battery Type / Life 4 x 1.5V / 100 hours
Auto Shut-off After 8 minutes
Dimensions 163 x 40 x 26 mm (6.4 x 1.6 x 1.0″)
Weight 85 g (3 oz.)

#HI98129: HI98129 Combo; EC - 0 to 3999 uS/cm; TDS - 0 to 2000 ppm $210.00
#HI98130: HI98130 Combo; EC 0.00 to 20.00 mS/cm; 0.00 to 10.00 ppt $210.00
#HI73127: Replacement pH Electrode $83.00
#HI73128: pH Probe Replacement Tool $19.00

pc35 meter

Ideal for water, wastewater, laboratory, or plant use, this multi-parameter Testr featurea long-life pH electrodes with a wide range of sample compatibility. The Tester features up to five-point pH calibration with NIST or USA autobuffer recognition. The Conductivity parameter features autoranging based on the concentration of your sample. Pin-style conductivity sensors have stainless steel electrodes for outstanding chemical resistance and durability. Replaceable sensors allow you to reuse the meter body without compromising the waterproof and dustproof protection. Other advanced features include push-button calibration, HOLD function, auto-shutoff, user-adjustable temperature coefficient, and low-battery indicator. Case, batteries, and lanyard included.

PCTestr™ 35 - Measures conductivity, pH, and temperature
Range: pH, 0.0 to 14.0; Conductivity, 0 to 1999 S, 2.00 to 20.00 mS; Temperature, 32°F to 122°F (0°C to 50°C).
Resolution: pH, 0.1; Conductivity, 1 S, 0.01 mS; Temperature, 0.1°F (0.1°C).
Accuracy: pH, 0.1; Conductivity, 1% full scale; Temperature: 0.9°F (0.5°C).
Calibration: pH, Up to 5 points (auto-recognition); Conductivity, 2 auto, 2 manual; Temperature compensation, Automatic and manual.
Conductivity temperature coefficient, 0.0 to 100%/°C.
Junction: Single.
Display: LCD.
Power: 4 x 1.5 V A76 button cell (included).
Battery life: >150 hours.
Low battery indicator: Yes.
Operating temperature: 32°F to 122°F (0°C to 50°C).
Dimensions: 6-1/2" L x 1-1/2" diameter

#PCTestr35: Okaton Multi-Parameter Testr $205.00
#76532: Replacement Sensor for PCTestr35 $122.00
#PC35-CAP: Replacement Protective Cap $4.99
#PC35-ORING: Replacement O-Ring Set $3.99

pH5+ Meter

These accurate, reliable pH meters are ideal for taking routine pH and temperature measurements. Features include a large LCD, a splash-resistant membrane keypad, easy access connections for BNC electrode and temperature sensor, auto buffer recognition, three-point pH calibration, temperature readout and automatic temperature compensation, hold function, and auto-off function. The meter comes with a pH electrode and temperature probe, and they can be used with most pH and ORP electrodes with BNC connectors. Protective rubber boot included.

-Display: Single Custom LCD.
-Auto Shut-Off: After 17 minutes.
-Operating Temp.: 32°F to 122°F (0C to 50°C).
-Temp. Compensation: Automatic Temperature Compensation (ATC) Fixed 2% per C factor.
-Power: Four AAA alkaline batteries (supplied) >60 hours continuous use.
-Dimensions: 5.5" x 2.7" x 1.3" unit only; 9.25" x 6.5" x 3.0" boxed.
-Range: 0.00 to 14.00 pH; 0.0 to 100.0°C.
-Resolution: 0.01 pH; 0.1°C.
-Accuracy: 0.01 pH; 0.5°C.
-Calibration: Up to 3 Buffer Values (pH 4.01, 7.00; 10.0).

#PH5+: Oakton pH 5+ pH Meter $385.00
#PH5+ELEC: Replacement pH 5+ pH Electrode $75.00

pH 450 Meter

Ideal for any environment, the pH 450 meter offers an IP67-rated waterproof housing. The large, backlit LCD lets you view the main measurement simultaneously with temperature and calibration data with % slope. Calibrate pH and ISE with up to six points from USA, NIST, DIN, PWB and custom pH buffers. Automatic temperature compensation (ATC) ensures measurement accuracy even in fluctuating temperatures. Select temperature reading from degree C or degree F to suit your application. Meter features include ready (stability) indicator, smart averaging, hold function, calibration alarm (visible), battery-life indicator, and electrode status. Perform data logging with manual or timed collection of up to 500 data sets with real-time clock time/date stamp.

-Measures: pH, ISE, mV, °C/F.
-pH Range: -2.00 to 16.00 pH.
-pH Resolution: 0.01 pH. pH
-Accuracy: 0.01 pH.
-pH Calibration: 6 points - USA, NIST, DIN, PWB, custom buffers.
-mV Range: +/- 2000 mV. mV
-Resolution: 0.1 to 1 mV. mV
-Accuracy: 0.2 mV 2 LSD or 5% of reading; whichever is greater.
-mV Calibration: 200 mV.
-Ion Range: 0.0 to 19999.
-Ion Resolution: 0.01.
-Ion Accuracy: 0.5% ful-scale (monovalent); 1.0% full-scale (divalent).
-Ion Calibration: Up to 6 points.
-Temperature Range: -10.0 to 100.0 °C.
-Temperature Resolution: 0.1 °C.
-Temperature Accuracy: 0.1 °C.
-Temperature Calibration: Offset 0.1C increments.
-ATC: Automatic or manual.
-Power: Two AA batteries.
-Memory: 500 data sets with calibration.
-RS-232: Yes, and USB Optional.
-AC Power: Yes.
-Dual Display: Yes.
-Waterproof/Dustproof (IP67): Yes.
-Dimensions: 7-7/8" x 3-1/8" x 2-1/4" (20 x 8.3 x 5.7 cm).
-Shipping weight: 1 lb. (0.5 kg).

#PH450: Oakton pH 450 pH Meter $850.00
#PH450E: Replacement pH 450 pH Electrode $149.00


100 strips per vial. 7/32″ wide x 2″ long in standard plastic vials. Packaged in vial with polyethylene stopper and color chart.

#PH2110S: Hydrion pH 2-10 Paper Strips. Sharp color change for each pH unit (2, 4, 6, 8, and 10) $2.50
#PH112S: Hydrion pH 1-12 Paper Strips. Sharp color change for each full pH unit (1-12) $4.25
#PH114S: pH 1-14 Paper Strips. Sharp color change for each full pH unit (1-14) $2.75

ph paper

Based on well-known spectral color changes and is sharp and clear throughout the range. Narrow strip (5/32 inches) uses micro quantities of liquid on special wet strength paper that will not tear. Each roll is 15 feet long.

#PH112R: Hydrion pH 1-12, Single 15′ Roll in Dispenser $9.95
#PH38R: Hydrion Short Range dual 15′ rolls of 3.0-5.5 and 6.0-8.0 pH paper $13.95
#PH695R: Hydrion Short Range dual 15′ rolls of 6.0-8.0 and 8.0-9.5 pH paper $13.95

ph alert

What is better than a pH meter or test kit? An in-place, continuous reading, pH Alert™! Ideal for aquariums, tanks and even ponds. Reacts to pH changes within minutes. Works for 3 to 6 months. Simply put the pH Alert™ inside your tank (freshwater only) to measure between pH 5.8 and 8.6. Replacement sensor included

#AM20: pH Alert $10.35

ph kit

For Testing Tap Water, Fresh Water, etc.
For Water Samples And Unbuffered Dilute Solutions.
For Waste Water, -Pure Water- or other near neutral solutions.

The LO-BUFF indicator system has color matches for each 0.5 pH units from pH 5.0 to 9.0 from two units below neutral to two units above the neutral point. It is now available as a Lo Ion Kit for very dilute or unbuffered solutions. Lo Ion Kits give accurate readings in dilute or un-buffered solutions where "dip and read" test papers may read low. This Kit Is Suitable for Testing Ponds And Streams, Tap Water And Similar Fresh Water Sources. Each kit includes a 15′ roll of test paper in a dispenser with color charts and a capped sample tube in a polypropylene case.

#LI-5900: Lo-Ion pH Test Kit $19.00


pH must be controlled and monitored because it plays an essential role in almost all chemical and biological processes. Each test kit consists of an Octet Comparator, graduated test tubes, and a bottle of indicator solution for 50 tests. Simply fill the tube to the mark with the sample water, add several drops of indicator, and compare the resulting color against the eight permanent color standards in the comparator. pH Increments 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5

#5858-01: LaMotte Wide Range pH Test Kit $57.00
#2218-G: Wide Range pH Reagent Refill, 30 ml: $10.25
#2218-H: Wide Range pH Reagent Refill, 60 ml: $16.50
#2218-L: Wide Range pH Reagent Refill, 500 ml: $35.00
#0106: Replacement Plastic Test Tube, w/ Cap $4.35


All kits are supplied in blue hard plastic case. Color Disc Method. Three ranges to choose from.

#1470-06: Model #17-F, 5.5-8.5 pH x 0.1 pH, Bromthymol Blue, 200 Tests $219.00
#1470-08: Model #17-H, 6.5-8.5 pH x 0.1 pH, Phenol Red, 200 Tests $219.00
#1470-11: Model #17-N, 4-10 pH x 0.5 pH, Wide Range Indicator, 300 Tests $219.00
#255-32: Refill Reagent 100 ml for 17-F, Bromthymol Blue, $45.00
#211-32: Refill Reagent 100 ml for 17-H, Phenol Red $45.00
#23293-32: Refill Reagent 100 ml for 17-N, Wide Range Indicator $45.00
#1926-00: Replacement Colour Viewing Tube $4.95

pH Buffer

+ or - 0.01 pH @ 25 °C.
Store at room temperature.
Premium quality pH calibration solutions that are NIST traceable. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight. Hanna's line of calibration buffers have been specially formulated to have a long expiration date for an unopened bottle.

#HI7004L: pH 4.01 Buffer, Colorless, 500ml $17.25
#HI7004/1G: pH 4.01 Buffer, Colored, 4000ml $79.00
#HI7007L: pH 7.01 Buffer, Colorless, 500ml $17.25
#HI7007/1G: pH 7.01 Buffer, Colored, 4000ml $79.00
#HI70010L: pH 10.01 Buffer, Colorless, 500ml $17.25
#HI70010/1G: pH 10.01 Buffer, Colored, 4000ml $79.00

pH Buffer

+ or - 0.01 pH @ 25 °C.
Oakton buffers for meters with 0.01 resolution are standardized against NIST-traaceable pH references within 0.01 pH at 77°F (25°C). Store buffers away from direct sunlight.

#C10701: pH 4.01 Buffer, Red, 500ml $19.25
#C10711: pH 7.01 Buffer, Green, 500ml $19.25
#C10721: pH 10.01 Buffer, Blue, 500ml $19.25


pH calibration solutions supplied in handy and cost effective 20 ml sachets. Each pouch contains sufficient solution for one calibration. The buffer solutions are individually sealed inside each sachet and protected against the ingress of light and air. Hence when you calibrate your meter in a pouch, it is like adjusting your meter in a freshly opened buffer solution. Available individually or in packages of 25.

#HI70004P: 4.01 Pouch, 20 ml $1.98
#HI70004P25: 4.01 Pouch, 20 ml, Box of 25 $42.00
#HI70007P: 7.01 Pouch, 20 ml $1.98
#HI70007P25: 7.01 Pouch, 20 ml, Box of 25 $42.00
#HI70010P: 10.01 Pouch, 20 ml $1.98
#HI70010P25: 10.01 Pouch, 20 ml, Box of 25 $42.00


The following solutions are available for the care and maintenance of your pH meter electrode.

#HI7061M: pH Electrode General Cleaning Solution, 230 ml $15.00
#HI7061L: pH Electrode General Cleaning Solution, 460 ml $20.00
#HI70300L: pH Electrode Storage Solution, 460 ml $20.00

ORP Meter

Ideal for checking chromate reduction, cyanide oxidation, and other ORP readings
- Large, horizontal readout
- IP67-rated housing floats in water and sits flat on a hard surface

ORPTestr 10 features a replaceable double-junction platinum electrode - ideal for checking dirty water, heavy metals, sulfides, and organics. Valox® electrode body resists most chemicals.

Use these versatile instruments for applications ranging from swimming pool testing to pulp bleaching. Meter features 2 mV accuracy and a 150 mV offset. Housing allows you to attach a lanyard (included) for easy retrieval. Additional features include a hold function, auto-off function, self-diagnostic error messages, and a three-segment battery-life indicator.

Display Type: LCD
Min mV (mV): -1000
Max mV (mV): 1000
mV Resolution: 0.1 or 1 mV
mV Accuracy: 2 mV
Min Temperature (° C): -5
Max Temperature (° C): 50
Waterproof: Yes
Battery: 4 x A76 batteries (included)
Diameter (cm): 3.81

#ORP10: OAKTON ORPTestr 10 $289.00

orp meter

The HI98120 is a waterproof ORP and temperature handheld meter. The housing of this tester is completely sealed to protect against the intrusion of water and is also designed to float if accidentally dropped into a body of water. The HI73120 replaceable ORP electrode is a cartridge design with the stainless steel round connector. With this type of design there are no pins that can bend or break during replacement. The ORP electrode also has an extendable cloth junction. This type of junction allows for the renewal of the junction by simply pulling out 3 mm (1/8") to clear any clogging which improves measurement response time and stability. The exposed stainless steel temperature probe on this meter facilitates a faster, accurate temperature measurement.

Features at-a-glance:
- IP67 rated
- Protects the internal electronics of the meter from an ingress of water in the event that the meter is dropped into a tank or a body of water.
Stability indicator
- HI98120 features a stability indicator tag on the LCD that will disappear once the reading stabilizes.
Replaceable electrode
- An electrode last approximately one to two years. It is possible to replace just the electrode and not have to buy a completely new meter.
- The HI73120 ORP electrode is a simple cartridge design allows the sensor to be easily replaced whether in the lab or in the field.
HOLD feature
- Allows the reading to be frozen so that the reading can be documented.
Auto-shut off
- The meter automatically turns itself off after 8 minutes of use in order to conserve battery life in the event the meter is accidently left on.
Battery % level
- When the meter is turned on the battery % level is displayed as a percentage.

ORP Range: 1000 mV
ORP Resolution: 1 mV
ORP Accuracy: 2 mV
Temperature Range: -5.0 to 60.0°C / 23.0 to 140.0°F
Temperature Resolution: 0.1°C / 0.1°F
Temperature Accuracy: 0.5°C /1°F
ORP Calibration: factory calibrated
Battery Type/Life: 1.5V (4) / approx. 300 hours of continuous use; auto-off after 8 minutes of non-use
Electrode/Probe: HI73120 replaceable ORP electrode (included)
Environment: -5 to 50°C (23 to 122°F); RH max 100%
Dimensions: 163 x 40 x 26 mm (6.4 x 1.6 x 1.0")
Weight: 100 g (3.5 oz.)
Ordering Information: HI98120 (ORP) is supplied with HI73120 ORP electrode, HI73128 electrode removal tool, batteries and instructions.
Warranty: 1 year (probe 6 months)

Caliabration Solutions sold separately.

#HI98120: ORP/Temp Meter $185.00
#HI73120: Replacement Electrode $83.00
#HI73128: pH Probe Replacement Tool $19.00

ORP SolutionORP Solution

Quality ORP test solution made from reagent grade chemicals and used to test platinum and gold ORP electrodes. Hanna test solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. - Prepared with reagent grade chemicals - Allows for a quick check of your ORP electrode - Air-tight seal to ensure the quality of the solution

These ORP test solutions are designed for testing the performance of ORP electrodes. This solution allows users to quickly see if their electrodes are reading correctly. Using this as a diagnostic tool, users can then decide if the ORP electrode needs to be cleaned and conditioned. The test solutions are produced using reagent grade chemicals in a temperature controlled environment.

HI7021L: When the ORP electrode is placed in the test solution the reading obtained should be within +/- 20 mV of the 240 mV @ 25°C value.
HI7022L: When the ORP electrode is placed in the test solution the reading obtained should be within +/- 10 mV of the 470 mV @ 25°C value.

#HI7021L: 240 mV @ 25°C ORP Test Solution, 500 ml $36.00
#HI7022L: 470 mV @ 25°C ORP Test Solution, 500 ml $36.00