$980

NH4 Ion Meter Ammonium Ion Meter With Standard Solution 0.9~9000ppm 2 to 5 point

$980

1pcs Mettler inpro3251/120/PT100 52002585 pH electrode

$60.78

CM-230K Conductivity Meter Water Conductivity Meter Monitor Supports Alarms ot25

$622.9

1pc SUNTEX pH glass electrode probe METTLER TOLEDO 405-60-SC-P-PA-K19/120/3M

$485.76

1pcs NEW WTW hydrofluoric acid resistant PH electrode SenTix XO

$450

Handheld Conductivity Meter TDS Meter with Conductivity Solution 0.00μS/cm～100mS

$980

Calcium Ion Meter Ca Ion Meter wih Standard Solution 0.02-40100ppm ±1999.9mV

$60.78

CM-230K 220V Online Conductivity Meter Water Conductivity Meter w/ Electrode

$626.98

1pc pH glass electrode probe METTLER TOLEDO HA405-90-PA-SC-88G-K19/120/3M

$76

JISHEN ER-510 Online Resistivity Meter High Purity Water Resistivity Tester 110V

$1066.36

Multi parameter Water Quality Analyzer with Standard Fluid ±1999.9mV PH Electrde

$1150

1pcs METTLER 52002559 Inpro3250/SG/120/PT1000