♥ 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
New Professional 8 in 1 Multi-parameter Water Testing Meter Digital LCD Multi-function Water Quality Monitor PH/EC/TDS/SALT/S.G
Aliexpress UK
Press shift to switch between different modes. 1 TDS EC (Battery Included.). Each startup mode is the default mode used before shutdown. 3.5 minutes automatic shutdown. Save power and extend battery life.
eBay
Portable LCD Digital TDS Water Quality Tester Water Testing Pen Filter Meter Measuring Tools Accessory For Aquarium Pool
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
1/3 Pcs Portable LCD Digital TDS Water Quality Tester Water Testing Pen Filter Meter Measuring Tools Accessory for Aquarium Pool
Aliexpress UK
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. Due to the difference between different monitors, the picture may not reflect the actual color of the item.
eBay
PH TDS Meter Tester 0-9999 PPM Water Meter Quality Testing Pen TEMP/PPM Portable Water Purity Filter Measuring Tools
Aliexpress UK
Shift between TDS and Conductivity. Can be used in : Water purifiers and filters, food(vegetable, fruit)&drink quality monitoring, pools and spas, aquarium, hydroponic. Accuracy: ±2%. Press the switch ,place the electrode into the testsolution.
eBay
TEMP/PPM Water Meter Quality Testing Pen PH TDS Meter Tester Portable 0-9999 PPM LCD Digital Water Purity Filter Measuring Tools
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. TDS water quality testing pen 1.
eBay
Digital Residual Chlorine Tester Multifunction Water Quality Tester 2/3/4/5 in 1 CL2 TEMP pH H2 ORP Meter Pool Water Testing Pen
Aliexpress UK
This unit is not water-tight and is not covered under the warranty if water enters the unit. This item can be used in: water purifiers and filters, food (vegetable, fruits) & drink quality monitoring, pools and spas, aquariums, hydroponics.
eBay
6 in 1 Tuya WiFi Water Quality Tester PH/Total Dissolved Solids/EC/SG/Salt/Temp Testing Meter Digital Water Quality Analyzer
Aliexpress UK
Press the shift key to switch between different modes. 1-20PCS 3-in-1 Water Quality Tester (Need to choose). Size: 15.5cm X 3cm X 1.5cm. ③ After the value stabilizes, press the HOLD key and take out the reading.
eBay
100pcs PH Test Strips Litmus Paper PH4.5-9.0 Alkaline Acid Test Paper for Water Saliva Urine Testing PH Test Meter
Aliexpress UK