> 1000: Not suitable for drinking. [Easy to Clean] - The electrode protector can be unplugged to clean the probe and sheath. 100-300: general purity. After the test is complete, wipe the pen with the cloth and put on the cap.
eBay
EC TDS Tester PH Meter High Precision Water Hardness Instrument Aquarium Pool Water Quality Purity Testing Pen
Aliexpress UK
Simply dip the test paper into water for 2 seconds, keep it in the air for 15 seconds, then compare the color on the test paper with the color card on the container. 1 bottle of test paper (50pcs/100pcs).
eBay
TDS Meter Digital Water Tester 0-9990ppm Drinking Water Quality Analyzer Monitor Filter Rapid Test Aquarium Hydroponics Pools
Aliexpress UK
PH VALUE - just move the switch to the right and after 1 minute you know the PH value of your soil. SUNLIGHT - set the switch to the LIGHT position and you can read the intensity. PH Range: 3.5-8PH ( 3.5-7 Acid, 7-8 Alkaline).
eBay
4 in 1 PH Meter PH/TDS/EC/Temperature Meter Digital Water Quality Monitor Tester for Pools Drinking Water Aquariums
Aliexpress UK
eBay
PH Meter Waterproof PH/TDS/EC/Temp Meter Digital Water Quality Monitor Tester with Backlight for Pools Drinking Water Aquariums
Aliexpress UK
Water Pump Tester Kit.
eBay
5 in 1 Water Quality Tester Digital TDS/EC/PH/Salinity/Temperature Meter for Pools Aquariums Water Backlight Quality Detector
Aliexpress UK
SALIFERT PROFI TEST KITS. Salifert Ammonia NH3 test kit (NEW). Salifert Calcium CA test kit. Salifert Carbonate Hardness KH/Alk test kit. Salifert Copper Cu test kit. Salifert Iodine I2 test kit. Salifert Magnesium Mg test kit.
eBay
Digital PH /TDS/ EC Meter Tester Thermometer Pen Water Purity PPM Filter Hydroponic for Aquarium Pool Water Monitor
Aliexpress UK
eBay
NOYAFA EZ-9901 Digital PH Meter with Battery, 3 in 1 PH TDS Temp Pen Type Water Quality Tester for Water Wine Spas and Aquariums
Aliexpress UK
Water Pipe Line Leakage Tester Copper Pressure Test Pump Heating System 5 L UK. 1 x Hydraulic Tester. - Material: Pump body aluminum, Pressure relief valve copper, box body iron. - Widely used in industrial, building and many field.
eBay
Portable Pen Portable Digital Water Meter Filter Measuring Water Quality Purity Tester Digital TDS Meter Filter Measuring
Aliexpress UK