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TDS TEMP PPM Tester Pen LCD Digital TDS Meter Stick Water Purity

$ 6.15 $ 3.69

Hanna Instruments pH Tester HI 9813-6 pH/EC/TDS/C Meters Used

$ 176 $ 105.6

Automatic Potentiometric Titrator By Hanna instruments

$ 220 $ 132

Hanna instruments digital PH meter

$ 22 $ 13.2

Digital PH Meter Tester 0.1 Accuracy Test prod Power of Hydrogen Measure

$ 6.6 $ 3.95

Accumet Portable Laboratory Handheld ph Meter Case No Electrode or AC USED READ

$ 17.55 $ 10.53

HACH Sension pH Meter #51700-60

$ 26.4 $ 15.83

TESTERS SALINITY HANNA INSTRUMENTS-

$ 44 $ 26.4

ThermoScientific Orion 'All-In-One' pH Buffer kit w/ DO Probe, Cond. Cell, Meter

$ 616 $ 369.6

Medidor eSeasonGear SALT-3000 medidor digital de temperatura de salinidad PPM...

$ 25.61 $ 15.37

YSI 3252 Conductivity Cells

$ 220 $ 132

Hot Sale US 1 PC Digital PH Meter Tester for Household Water Aquarium Hydroponic

$ 6.38 $ 3.83

WTW Multiline P4 Universal Meter Ph O2 Temperature Conductivity

$ 1099.56 $ 659.73

Apera Instruments LLC-AI314 Premium Series EC60 Waterproof Conductivity Pocke...

$ 104.49 $ 62.69

Advantage Controls - Han Tron Water Tester

$ 60.72 $ 36.43

Oakton Instruments Waterproof TDS Tester Pure 35661-20 Meter

$ 3.07 $ 1.84

Aqua Metrix P60C-8 PH Probe Tester

$ 475.19 $ 285.11

Mettler Toledo M 300 conductivity meter

$ 263.12 $ 157.87

Apera Instruments LLC-AI3717 ORP60-DA ORP Probe for ZenTest 60-Z Smart Pocket...

$ 72.86 $ 43.71

-AI501 PH700 Benchtop Lab Meter, 0.01 Accuracy, 1-3 Points Auto Calibration, pH

$ 289.91 $ 173.94

Thermo Scientific Orion 9512 Ammonia Electrode

$ 88 $ 52.8

Mettler Toledo 30281896 in-Lab pH Electrode Multi Pin Connector Cable, BNC/RCA

$ 51.04 $ 30.62

scientific instruments conductivity meter

$ 22000 $ 13200

HACH HQ440D Laboratory Dual Input, Multi-Parameter Meter - pH, Conductivity….

$ 633.6 $ 380.16

Hach Pocket Pro TDS Tester Salinity 9531200

$ 43.99 $ 26.39

METTLER TOLEDO FG2 51302908 FIVEGO PORTABLE PH/ORP/TEMPERATURE METER

$ 96.75 $ 58.05

Apera Instruments LLC-AI314 Premium Series EC60 Waterproof Conductivity Pocke...

$ 104.49 $ 62.69

ysi incorporated model 30 salinity conductivity temperature

$ 17.59 $ 10.55

OMEGA CDH-35 WATER-RESISTANT CONDUCTIVITY METER

$ 67.32 $ 40.39

HM Digital tds-3 meter, temperature meter, Total dissolver solids meter, ppm

$ 5.32 $ 3.19

Oakton Instruments Waterproof TDS Tester Pure 35661-20 Meter

$ 2.98 $ 1.78

VWR SB90M5 SYMPHONY PH METER

$ 130.68 $ 78.4

Advantage Controls - Han Tron Water Tester

$ 60.72 $ 36.43

VWR SB90M5 BENCHTOP SYMPHONY METER WITH POWER SUPPLY

$ 215.6 $ 129.35

HM Digital TDS-EZ Water Quality TDS Tester

$ 7.92 $ 4.75

Corning pH Meter 140 Digital Laboratory Device

$ 70.35 $ 42.21

Milwaukee SM802 2 digit Portable pH/EC/TDS Combination Meter (used)

$ 61.6 $ 36.96

HMD TDS Tester Digital Water Tester

$ 3.74 $ 2.24

Myron L RO-1 Reverse Osmosis DS Meter Instant accurate TDS ppm Test

$ 133.84 $ 80.3

SCHOTT INSTRUMENTS LAB 850 PH-METER

$ 131.99 $ 79.19

Fisher Scientific Accumet AB15 pH Meter & NEW 13-620-853 Electrode-WORKING

$ 158.39 $ 95.03

Myron L Company • EP Meter • MICROMHOS

$ 44 $ 26.4

Mettler Toledo M 300 conductivity meter

$ 250.8 $ 150.47

THERMO SCIENTIFIC 8107UWMMD ROSS ULTRA PH/ATC PROBE, DJ/EPOXY/3M; BNC/8-PIN DIN

$ 100.76 $ 60.45

YSI 85 OXYGEN CONDUCTIVITY SELENITY AND TEMPERAURE METER

$ 66 $ 39.6

Professional 6 in 1 Multimeter Water Quality Testing Meter Digital Tester Home

$ 145.77 $ 87.46

FISHER SCIENTIFIC ACCUMET BASIC AB15 PLUS PH METER WITH ARM HOLDER

$ 52.79 $ 31.67

SALT-3050 Waterproof IP65 Meter, Digital Salinity PPM Temperature Tester for

$ 58.17 $ 34.9

Mettler Toledo SevenExcellence S470 pH/Conductivity Meter, Item # 30046253

$ 2640 $ 1584

myron 532t1 meter

$ 87.12 $ 52.27

THERMO SCIENTIFIC 8220BNWP ORION PERPHECT ROSS COMBINATION PH MICRO ELECTRODE

$ 144.76 $ 86.85

Hach "Pocket Pal" pH Tester #44350-01

$ 22 $ 13.2

SPECTRUM pHC-22 CONDUCTIVITY METER

$ 210.32 $ 126.19

HM Digital TDS-4, HMD Water Quality Purity Tester/Meter 0-9990 ppm

$ 11.43 $ 6.85

Digital TDS3 TEMP PPM TDS Meter Tester Filter Pen Water H2o Quality Purity Stick

$ 5.27 $ 3.16

Hanna HI 2222 Bench Top Wine Analysis pH Meter Test Outfit

$ 122.06 $ 73.23

Mettler Toledo SevenEasy pH Digital Meter for Parts /Repair

$ 105.6 $ 63.35

HM Digital DM-2 Dual Inline TDS Meter Monitor Commercial for RO Unit

$ 60.33 $ 36.19

Hanna HI991405 Combo GroChek Pro Continuous Waterproof pH/TDS/Temperature Meter

$ 87.99 $ 52.79

NEW - Ysi (ProODO) with ProOBOD + Optical Dissolved Oxygen Meter

$ 1038.4 $ 623.04

WTW pH 340i pH Dissolved Oxygen Conductivity Measuring Set W2A30-1012

$ 259.6 $ 155.76

Myron L 532 M1 Analog TDS three range Conductivity & Resistivity DS Meter 532M1

$ 34.32 $ 20.59

Fisher Scientific Accumet XL150 Benchtop pH Meter - WITH PROBE

$ 35.19 $ 21.11

IQ Scientific Instruments pH Meter Probe Model IQ160

$ 22 $ 13.2

Myron L D-6 Digital Dialysate Meter

$ 616 $ 369.6

Thermo Orion 2 Star Ph Meter With Probe Power Adapter

$ 114.39 $ 68.63

LaMotte Conductivity/TDS Test Meter w/Probes Model CDS5000 Code 1752-01

$ 219.95 $ 131.97

ABB AX400 Monitor

$ 132 $ 79.2

Lilliput Digital Mini PH meter in plastic case

$ 26.4 $ 15.83

Hach 44600 Conductivity / TDS Meter

$ 0.87 $ 0.52

Kruger & Eckels Model 100 pH Meter

$ 88 $ 52.8

Oakton ION 700 pH / mV / Ion / C / F Meter

$ 87.99 $ 52.79

New Aqua Metrix AS-M01P1-020 Water Analytics Conductivity Probe AS/AM Shark

$ 70.39 $ 42.23

VWR SB90M5 SYMPHONY PH METER

$ 130.68 $ 78.4

EXTECH WATERPROOF PALM PH METER MODEL PH220A - NEW IN BOX

$ 70.4 $ 42.24

THERMO SCIENTIFIC 8107UWMMD BNC MINIDIN ORION ROSS PH/ATC TRIODE

$ 87.56 $ 52.53

Aquaculture Water Quality Dissolved O2 Tester PH/Conductivity/Salinity Meter

$ 336.16 $ 201.69

HACH HQ440D Laboratory Dual Input, Multi-Parameter Meter

$ 351.99 $ 211.19

VWR SympHony SB70P Portable Bench Top pH Meter

$ 61.59 $ 36.95

Hach MP6 Conductivity/pH Meter

$ 699.6 $ 419.76

Pen-type Water Quality Tester 5 In 1 pH TDS EC Temp Salinity Waterproof Meter

$ 61.08 $ 36.64

Hanna Instruments HI 8424 Microcomputer pH Meter

$ 43.99 $ 26.39

Apera Instruments YD300 Portable Water Hardness (CA2+ and MG2+) Meter Kit

$ 198 $ 118.8

Thermo Orion 3 Star Benchtop pH Meter

$ 70.35 $ 42.21

Thermo Orion Star Series Benchtop pH Meter

$ 35.15 $ 21.09

Thermo Scientific Orion Star A Series A111 pH Meter Pre-owned Please See Details

$ 263.12 $ 157.87

HACH HQ11d portable meter with 2 leads

$ 264 $ 158.4

HACH HQ40D PH METER Powers up ,NOT FULLY TESTED.

$ 968 $ 580.79

YSI DO200ACC-04 0 to 20 PPM Range Dissolved Oxygen Meter (D)

$ 131.99 $ 79.19

1 USED SIGNET 3-5800 CONDUCTIVITY MONITOR

$ 44 $ 26.4

Mettler Toledo SevenMulti Dual Input Meter w/ pH and Conductivity Modules

$ 87.95 $ 52.77

YSI 3403 Glass Dip Conductivity Cell k=1.0/cm, k=100/m Modified Lead 3400 Series

$ 96.8 $ 58.08

METTLER TOLEDO FG2 51302908 FIVEGO PORTABLE PH/ORP/TEMPERATURE METER

$ 96.75 $ 58.05

ProMinent DCM 200 Aquatic Water Quality Chemistry Controller w Sensors! {{product_list}} SHIP!

$ 395.72 $ 237.43

SCIENTIFICA CONDUCTIVITY METER MODEL 645 (NU5)

$ 132 $ 79.2

Thermo Scientific Orion 3 Star Benchtop pH Meter w/ Power Cord

$ 96.8 $ 58.08

SENSORX INSERTION/ WET TOP PH/ ORP ELECTRODE 29 3/4"L PROBE

$ 263.99 $ 158.39

Mettler Toledo Thornton # 58 031 404 ISM Conductivity / Resistivity Sensor

$ 176 $ 105.6

VWR SB90M5 BENCHTOP SYMPHONY METER WITH POWER SUPPLY

$ 215.6 $ 129.35

THERMO SCIENTIFIC 8107UWMMD ROSS ULTRA PH/ATC PROBE, DJ/EPOXY/3M; BNC/8-PIN DIN

$ 100.76 $ 60.45