It is a must-have item for family to test tap water, distilled water, bottled water and more. Multifunctional, practical and convenient. TDS range: 0-9990PPM. Conductivity range: 0-9990us/cm. Temperature range: 0.1-80℃.
eBay
Professional Pen Type PH Meter Portable PH Water Quality Tester Acidometer for Aquarium Acidimeter water PH Probe acidity meter
Aliexpress UK
The higher ppm value is,the more substances in the water. Widely apply to test water quality,for RO system, aquariums, hydroponics, pools, spas,etc. 2 x TDS Tester. Range :0-9990 ppm. ON/OFF: on and off.
eBay
Digital PH Meter 10 in 1 Professional Water Quality Monitor Tester PH/EC/TDS/Salinity/Thermometer Multi-parameter Testing Meter
Aliexpress UK
[TDS Digital Reference Table]. > 1000: not suitable for drinking. [Easy to clean] - The electrode protector can be unplugged to clean the probe and sheath. 1× Water Quality Tester （Without battery）. 32MM 1.25IN Pool Hose Connector Swimming Pool Filter Pump Pipe Joint Pool.
eBay
TDS Digital Salinity Tester/Meter For Salt Water Pool & Fish/Koi Pond Testing Household Drinking Water Quality Test
Aliexpress UK
Before drinking a test, drinking water at ease, TDS on behalf of the total soluble solids content in the water, the lower the TDS value / the purer the water quality. PORTABLE DESIGN-- Handheld TDS tester pen style and makes it conveniently fits in your pocket or bag and goes anywhere.
eBay
TDS Meter Digital Water Quality Tester 0-9990PPM LCD Display Water Quality Testing Pen Alloy Electrode Probe
Aliexpress UK
(Tests the overall water purity level in ppm on the screen. The reading will be fixed on the display within 2 seconds, press the HOLD key to lock the number on the screen. 1) Take off the end cap and press the ON/OFF switch.
eBay
4 In 1 PH TDS EC Temperature Meter Tester PH Pocket Water Quality Testing for Drinking Water Hydroponic Aquariums 50%off
Aliexpress UK
Press the shift key to switch between different modes. 1 X 3-in-1 Water Quality Tester. Wipe the electrode clean and insert it into the electrode protection sleeve. Size: 15.5cm X 3cm X 1.5cm. ③ After the value stabilizes, press the HOLD key and take out the reading.
eBay
TDS Digital Salinity Tester/Meter For Salt Water Pool & Fish/Koi Pond Testing Household Drinking Water Quality Test
Aliexpress UK
There are 4 modes are: TDS temperature, EC temperature, TDS Fahrenheit, EC Fahrenheit, the lower right corner is the temperature display. TDS test range: 0~9999PPM. And It Is Also Widely Used In Hydroponics, Swimming Pools, Spas, Aquariums, Etc.
eBay
Water Flow Meter Water Purifier Flowmeter Alarm And Power Save Function Filter Water Flow sensor Monitor 1/4 Inch
Aliexpress UK
Press shift to switch between different modes. 3.5 minutes automatic shutdown. Save power and extend battery life. Accuracy: ± 2%. Temperature range: 0.1-80.0℃(32.0-176.0℉). Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.
eBay
Ultrasonic Liquid flowmeter TUF-2000M Module Digital Water Flow Meter TS-2 TM-1 TL-1 TS-2-HT TM-1-HT High Temperature Sensors
Aliexpress UK