ZeroWater TDSmeter-20 ZT-2 Electronic Water Tester
hand held, Blue
$15.99
(2,128)
DEAL
Hofun High Accuracy TDS Meter Digital Water Tester
Water Quality Tester with True ATC, 3 in 1 TDS, EC & Temp Meter, PPM Water Testing Kits for Drinking Water, Tap, Well, RO/DI System, Hydroponics
$14.95
(1,423)
Therapist’s Choice® Shoulder Pulley
Over The Door: Includes Basic Exercise Guide (Black)
$7.99
(154)
eSeasonGear SALT-3050 Waterproof IP65 Meter
Digital Salinity PPM Temperature Tester for Salt Water Pool and Koi Fish Pond
$39.95
(2,055)
Bluelab PENCON Conductivity Pen and Digital TDS Meter
Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow
$79.99
(917)
General Tools PIN3 Replacement Pins for MMD4E
RHMG650 and RHMG700DL
$11.95
(176)
HM Digital COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester
-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy
$23.98
(540)
Bluelab TRUNV2 Truncheon Nutrient Meter
Digital Conductivity Tester in Water (Scales Include: EC, 500, ppm 700, CF, TDS) Tool for Hydroponic System and Indoor Plant Grow, White
$103.42
(773)
Awakingdemi WaterTDS Tester
Electrolyzer Quick Water Quality Testing Electrolysis Iron Bars TDS Tester
$14.92
(52)
TDS Meter Digital Water Tester - ppm Meter, EC & Temperature Test Pen 3-in-1
Easy to Use Water Quality Tester | Ideal for Testing RO Drinking Water Hydroponics Aquarium Swimming Pool & More (Green)
$14.29
(1,253)
Apera Instruments, LLC-AI501 PH700 Benchtop Lab pH Meter, 0.01 pH Accuracy, 1-3 Points Auto Calibration, 3-in-1 pH/Temp
Electrode
$241.19
(123)
HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0
9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy
$16.56
(1,235)
Apera Instruments
LLC-AI314 Premium Series EC60 Waterproof Conductivity Pocket Tester Kit, ±1% F.S Accuracy, Easy Switch of EC/TDS/Salinity, Replaceable Probe
$73.91
(191)
TDS Meter Digital Water Tester - ppm Meter, EC & Temperature Test Pen 3-in-1
Easy to Use Water Quality Tester | Ideal for Testing RO Drinking Water Hydroponics Aquarium Swimming Pool & More (White)
$13.99
(2,955)
LuoLeiNa pH Meter for Water and Tds Meter
.01 High Accuracy Lab pH Tester, pH Tester Digital Pen for Water，pH & Tds Meter Combo 4 in 1 pH TDS EC Temperature Meter
$15.99
(435)
HM Digital ZT-2 Basic TDS Tester
-999 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy
$12.20
(192)
Oakton AO-00653-16 Oakton Conductivity and TDS Standard
84 Μs; 500 mL
$22.80
(7)
Oakton AO-00653-18 Oakton Conductivity and TDS Standard
1413 Μs; 500 mL
$22.80
(57)
Apera Instruments PC800 Benchtop pH/Conductivity/TDS/Salinity/Resistivity/Temp
Multiparameter Meter Kit,.01 pH/1% F.S Accuracy AI523
$677.38
(18)
Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto
Calibration
$41.58
(115)