$55

COLE PARMER 05669-20 MICROCOMPUTER PH-VISION

$54.99

Leeds & Northrup Electrode P/N 117390 / 940-294-20 E / S094B / P0152398

$289.99

3671N - Jenco Instruments - pH/ORP Controller Voltage Output

$112.25

1PC PH Meter Tester instrument probe head for liquids 0563 2061 206-PH1

$180

Oakton pH Meter 11 Series pH/mV/°C with Oakton Probe – Calibrated & Tested

$143

Portable Conductivity Meter with Resolution 0.1/1 μs/cm 0.01/0.1ms/cm in Water

$79.99

PH Probe Replacement for Zentest PH60-Z Smart Tester - PH60-DE Model

$14.84

4 in 1 Digital Portable Water Quality Tester TDS/EC/PH/TEMP Pen Meter Monitor

$120.99

Thermo electron orion 105a+ conductivity meter

$39.99

CORNING (M107) pH/C 107, pH & Temperature Meter with Travel Pouch

$64.89

Black Conductive Paper (Pack of 25), Dry Field Mapping Kit Replacement Paper -

$180

Endress+Hauser Orbisint cps11d-7AA21 Digital PH Sensor / Probe ( 6929)