$2.83

Portable TDS Meter Test Water Quality Test Pen LCD Display TDS Tester 0-9990ppm

$133.33

1PC NEW FOR CON3131-13 Conductivity and Resistivity Sensor

$210

Digital PH Controller Meter with Range 0~14pH Resolution 0.01pH for for Sewage

$429

Fisher Scientific Accumet Research AR15 pH Meter

$554.6

Portable Conductivity Meter Handheld Conductivity and Resistivity Meter

$100

MALEMA M-200-P-1-B FLOW SWITCH 9 21 4k

$410.48

One New HACH RC1R5N PH Electrode

$28

3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes

$982.61

EMERSON 3900VP0110 / 3900VP0110 (BRAND NEW)

$1104.78

Hach HQ411d Benchtop pH/mV Meter, HQ411D

$950.95

Milwaukee MI415 PRO Portable Turbidity Meter for Water Analysis

$113.44

REED INSTRUMENTS R3500-KIT / R3500KIT (BRAND NEW)