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YSI 626906 ProDSS Nitrate Sensor with Module
$
99.00
TDS Water Hardness Tester Upgraded 0-9999ppm, Accurate 2%FS TDS Meter Digital Water Tester, Easy TDS Water Quality Tester for Drinking Water, RO/DI System, Pool&Spa, Hydroponics, Tap, Aquarium
$3.99
$
6.99
4-in-1 Accurate and Reliable, Digital TDS Meter EC Meter Temp (°C,°F) Meter 0-9990ppm, Professional Water Quality Tester for Drinking Water, RO/DI System, Aquariums etc
$9.99
$
10.99
UIUZAMR pH Meter for Hydroponics PPM EC Meter for Water Hydroponics Simultaneously Display Tester for Plant Nutrients pH Conductivity Meter for Reservoir Tank Hydroponic Water System
$
18.99
HANNA HI9813-6N Waterproof pH/EC/TDS Meter Probe
$
99.00
Myron L-575445 UltraPen PT3 UltraPen ORP and Temperature Pen
$
99.00
Myron L RPG Replacement pH Sensor for Multiparameter Meters
$
99.00
6-in-1 Water Quality Tester - TOC UV275 EC TDS COD Temperature Meter Drinking Water Quality Meter with Intelligent Scoring with ATC for Drinking Water, Well, Tap, Purified, Groundwater, Lab
$
26.99
Truncheon Nutrient Meter PPM Meter Hydroponics TDS Meter Digital Water Tester EC TDS Tester(EC/PPM500/PPM700/CF) Specifically Designed for DWC Hydroponic System, Indoor Plant Grow, Home Garden etc
$
24.99
Hanna Groline PH/EC/TDS/Temperature Monitor with Multiparameter Probe
$
99.00
Apera Instruments, LLC-AI533 PC820 Precision Benchtop pH/Conductivity Multiparameter Meter Kit with Highest Accuracy ±0.002 pH and ±0.5% F.S, up to 5-Point Auto. Calibration
$
99.00
pH Salt Tester for Swimming Pool Salinity Tester pH Meter Upgrade Simultaneous Display TDS EC PPM Meter for Hydroponics Salt Meter for Aquarium Fish Tank Saltwater Hot Tub Spa
$
19.99
2024 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
$6.99
$
7.99
8 in 1 Aquarium Water Quality Tester Digital Meter with Online APP Monitoring for Hydroponics Laboratories
$
52.99
pH/EC Conductivity Meter with ATC Water Quality Tester 0.0-14.0pH / 0~19.99ms/cm Aquarium, Hydroponics Tool
$
30.99
Cole-Parmer 22014 Psychrometer, 10 to 120F, 10 to 100% RH/
$
99.00
2025 New 4 in 1 TDS Meter, Water Quality Detector, Accurate and Reliable, TDS Digital Water Quality Detector, EC and Temperature (° C/° F) Meter, 0-990ppm, Used for Drinking Water and RO/DI Systems
$
5.99
Truncheon Nutrient Meter for Hydroponic Digital Conductivity Tester for Water EC and TDS Meter with EC CF 500ppm 700ppm for Indoor Plant Grow Hydro Reservoir Tank Aeroponic Garden
$
22.99
TDS Meter Digital Water Tester, 2025 New Professional 3-in-1 TDS, Temperature and EC Meter (°C, °F) 0-9990 ppm, Ideal for Drinking Water, Aquariums, Hydroponics, RO/DI Systems & More
$5.99
$
6.99
Apera Instruments PC910 Benchtop Dual-Channel pH/Conductivity Meter Kit with LabSen 211 Refillable Glass pH Electrode
$99.00
$
99.00
Pool Salt pH Tester Upgrade pH and ORP Meter Accurate Consistent Pool Water for pH, Salinity, ORP, TDS, EC, Temp Tester pH PPM and EC Tester for Hydroponics, Aquariums, Pool, Spa
$
16.99
pH Salt Meter 5 in 1 pH TDS EC Salinity Tester for Pool Spa Aquarium Hydroponic Saltwater Digital pH and PPM Tester for Household Drinking Water Hot Tub Home Brewing Fish Tank…
$
13.99
Bluelab Combo Meter for pH, Temperature & Conductivity in Water - Easy Calibration, Digital EC/TDS/PPM Tester for Hydroponics & Indoor Plants (METCOM)
$
99.00
METER STAR 2PCS/LOT M101 Threaded 6.4mm Ceramic Electrode Spark Plug with Wire 900mm with 2.8x0.5 Flat Terminal,Ignition Needles and Wires Used by AA Pulse igniter
$
5.99
PH Sensor for Arduino, PH0-14 Value Detect Sensor Module + PH Electrode Probe BNC, PH Sensor UNO, PH Sensor Arduino Kit, PH Sensor Raspberry Pi Kit, by HQ&LP
$
17.99
Baluue 20pcs Pure Zinc Anode Sheet Kit, High Purity Nickel Anode Sheet, Electrode Zinc Copper Sheet for Fruit Power Scientific Class Experiments eElectronics Projects
$5.99
$
9.99
Silver Chloride Silver Reference Electrode, Ag/Agcl Reference Electrode, 1 Pcs Silver Silver Chloride Electrode (Diameter 4mmX50mm Length)
$
28.99
K-fit Kegel Toner Electrode Probe, KM-504
$
15.99
lrnyso Replacement Gauge Nozzle Electrode Kit Z2000 button fits Beckett Burner AF AFG SF SR AFII
$
6.99
Red R Gauge Electrode Setting Gauge for Riello 40 F3, BF3, F5, BF5, and R35 Oil Burners
$
11.99
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