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Apera Instruments Value Series EC20 Conductivity (EC) Pocket Tester Kit, ±1% F.S Accuracy in 0 to 20 mS/cm, BPB Sensor

Apera Instruments Value Series EC20 Conductivity (EC) Pocket Tester Kit, ±1% F.S Accuracy in 0 to 20 mS/cm, BPB Sensor

4.5
$167
Apera Instruments AI1205 PH60S-E Replacement Probe for PH60S Spear pH Tester, Also Compatible with PH60, PC60, and PH60F

Apera Instruments AI1205 PH60S-E Replacement Probe for PH60S Spear pH Tester, Also Compatible with PH60, PC60, and PH60F

4.0
$385
Apera Instruments, LLC-AI221 SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe

Apera Instruments, LLC-AI221 SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe

4.1
$250
Apera Instruments Value Series PH850-MS Portable pH Meter Kit for Small Samples and Test Tubes

Apera Instruments Value Series PH850-MS Portable pH Meter Kit for Small Samples and Test Tubes

4.3
$311
Apera Instruments SX751 pH/ORP/DO/Conductivity/TDS/Salinity/Resistivity/Portable Handheld Multiparameter Meter Kit, Silver

Apera Instruments SX751 pH/ORP/DO/Conductivity/TDS/Salinity/Resistivity/Portable Handheld Multiparameter Meter Kit, Silver

4.2
$2,599
Apera InstrumentsLLC-AI501 PH700 Benchtop Lab pH Meter, 0.01 pH Accuracy, 1-3 Points Auto Calibration, 3-in-1 pH/Temp. Electrode

Apera InstrumentsLLC-AI501 PH700 Benchtop Lab pH Meter, 0.01 pH Accuracy, 1-3 Points Auto Calibration, 3-in-1 pH/Temp. Electrode

4.4
$834
Apera InstrumentsAI209-T Value Series PH20 pH Tester Combo Kit, Including The Maintenance Set & AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

Apera InstrumentsAI209-T Value Series PH20 pH Tester Combo Kit, Including The Maintenance Set & AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

4.6
$118
APERA INSTRUMENTS AI316 Premium Series PC60 5-in-1 Waterproof pH/EC (Conductivity) /TDS (ppm) /Salinity (ppt) /Temp. Multi-Parameter Pocket Tester Kit

APERA INSTRUMENTS AI316 Premium Series PC60 5-in-1 Waterproof pH/EC (Conductivity) /TDS (ppm) /Salinity (ppt) /Temp. Multi-Parameter Pocket Tester Kit

4.5
$435
Apera InstrumentsAI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

Apera InstrumentsAI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

4.4
$171
Apera Instruments AI102G GroStar Series GS2 Soil pH Pen Tester Kit for Direct Soil Test and Nutrient Solutions Test with Replaceable Swiss Spear pH Probe, Gen II

Apera Instruments AI102G GroStar Series GS2 Soil pH Pen Tester Kit for Direct Soil Test and Nutrient Solutions Test with Replaceable Swiss Spear pH Probe, Gen II

4.7
$959
Apera Instruments WS200 Fluoride/pH/Conductivity 7-in-1 Portable Meter Kit

Apera Instruments WS200 Fluoride/pH/Conductivity 7-in-1 Portable Meter Kit

$742
APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

4.4
$207
Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

4.7
$58
Apera Instruments AI3711 PH60-Z Bluetooth Smart pH Tester Powered by ZenTest Mobile App with Cloud-Based Datalogger

Apera Instruments AI3711 PH60-Z Bluetooth Smart pH Tester Powered by ZenTest Mobile App with Cloud-Based Datalogger

4.5
$394
Apera Instruments PH60-DE Replacement pH Probe for ZenTest PH60-Z Smart pH Tester

Apera Instruments PH60-DE Replacement pH Probe for ZenTest PH60-Z Smart pH Tester

5.0
$188
Apera InstrumentsAI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display

Apera InstrumentsAI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display

4.5
$270
Apera Instruments PH400 Portable pH Meter Kit with Pre-mixed Buffers, 0.01 pH Accuracy, 0-14.00 pH Measuring Range, 3-Point Auto Calibration, 3' Probe

Apera Instruments PH400 Portable pH Meter Kit with Pre-mixed Buffers, 0.01 pH Accuracy, 0-14.00 pH Measuring Range, 3-Point Auto Calibration, 3' Probe

4.5
$799
Apera InstrumentsPH60F-E Replacement Probe for PH60F Flat pH Tester, Also Compatible with PH60, PH60S, and PC60

Apera InstrumentsPH60F-E Replacement Probe for PH60F Flat pH Tester, Also Compatible with PH60, PH60S, and PC60

4.1
$165
Apera Instruments AI521 PH800 Laboratory Benchtop pH Meter Kit, 0.01 pH Accuracy, GLP Data Management (USB output), BNC connector

Apera Instruments AI521 PH800 Laboratory Benchtop pH Meter Kit, 0.01 pH Accuracy, GLP Data Management (USB output), BNC connector

4.6
$1,399
APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

4.4
$171
Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes

Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes

4.6
$107
Apera Instruments SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC

Apera Instruments SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC

3.9
$300
Apera InstrumentsLLC-AI1201 Apera Instruments,LLC PH60-E Replacement Probe for PH60 Pocket pH Tester

Apera InstrumentsLLC-AI1201 Apera Instruments,LLC PH60-E Replacement Probe for PH60 Pocket pH Tester

4.3
$124
Apera Instruments, LLC-AI221 SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe

Apera Instruments, LLC-AI221 SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe

4.1
$250
Apera Instruments PH60F-Z Smart Bluetooth pH Tester with Flat Sensor Powered by ZenTest Mobile App

Apera Instruments PH60F-Z Smart Bluetooth pH Tester with Flat Sensor Powered by ZenTest Mobile App

4.3
$475
Apera InstrumentsPH60S-DE Replacement Spear pH Probe for ZenTest 60-Z Smart pH Pocket Tester (AI3713-E)

Apera InstrumentsPH60S-DE Replacement Spear pH Probe for ZenTest 60-Z Smart pH Pocket Tester (AI3713-E)

3.0
$584