H4 TDS Meter for Water Quality Testing, Portable Total Dissolved Solids Test Pen with Anti Alloy Probe and Stainless Steel Clips, LED Display for Lab and Household Use
M1S Water Quality Tester Analyzer and Portable TDS Meter Pen with LED Display - Detection Range 0-9999 ppm - Digital Measurement Tool for Professional and Industrial Water
2 in 1 PH and EC Meter Multifunctional Water Quality Monitor - LCD Backlight and Automatic Temperature Compensation - ABS Material for Aquariums and Swimming Pools -
Digital Temperature Controller with Probe - DC 12V 120W - Range minus 40 to 110 Degrees Celsius - High Accuracy Thermal Measurement Device with 0.1 Degree Resolution (DC12V)
Digital Aquarium Temperature Meter with LED Display and Touch Sensor - Cordless Adhesive Thermometer for Fish Tanks - Supports Celsius and Fahrenheit with 0.9 Degree Fahrenheit
Digital Temperature Gauge with LCD Display and 10K Probe for Refrigerators and Fish Tanks - Range of -50 to 110 Celsius - ABS Housing - 1 Meter Long Flexible Cable (Black)
Klanata Hydrogen Tester FH-77 - Portable Water Tester Pen - High Accuracy Hydrogen Rich Tester for Aquarium and Lab Use
Salinity Tester and Electronic Salt Concentration Meter with LED Indicator Light, Copper Probe for Accuracy, and Detachable Spoon Design, ABS Resin Construction for Portable Field
