$491

Portable Conductivity Meter Water Conductivity Tester Temp Meter TDS Tester

$989.5

Hach Dr/890 Colorimeter DR890#im

$972.01

Bromide Ion Meter with Standard Fluides 0.4~81000ppm 500 Groups Data ±0.5% F.S.

$180.3

Benchtop Digital Lab Acidity pH mV Meter Tester with Range 0-14.00pH 0-±1999m

$2045

1pcs E+H Truebungs Sensor cus51d-aac1a2

$667

1PCS TOADKK GST-5731C PH Meter pH Meter Probe, GST 5731C Probe Sensor

$1032.84

Water Quality Meter Dissolved Oxygen Meter ORP pH TDS Conductivity Ion Tester

$972.01

Benchtop Chloride Ion Meter with Standard Solution Auto Electrode Diagnostics

$256.99

Digital PH Meter with PH Buffer Powder 2 Ponit Calibration E-201-C Electrode

$158.59

Aquarium Redox value tester fish tank ORP-3000/ORP-3010 ORP test controller

$180.29

Benchtop Digital Lab Acidity pH mV Meter Tester with Range 0-14.00pH 0-±1999mV

$417.99

Benchtop Conductivity Meter TDS Meter with Conductivity Solution -5.0～110.0℃