First rinse the electrode with distilled water and suck it with filter paper. Resolution: 0.01 pH, Accuracy: ±0.01 pH. Users can use it directly. Display: LCD Digital. Remove protective cap. Always replace the protective cap after use.
eBay
Yieryi BLE-C600 Bluetooth-compatible Water Quality Pen 7 in 1 PH EC TDS ORP SALT S.G TEMP Meter APP Intelligent Control Tester
Aliexpress UK
【Alarm function】 via app, user can set a safety range for each setting. When the test result is below the lower limit or above the upper limit, the user receives a notification alert from your smartphone.
eBay
HHCC Flora Monitor Tuya Global Version Plants Grass Flower Care Soil Water Tester Sensor Detector Monitor work with Xiaomi app
Aliexpress UK
【4 in 1 pH Meter】A very complete kit for checking the quality of your water, whether it's from a faucet, hot tub, homebrew, indoor soil growing, aquarium, hydroponics or swimming pool. In addition, TDS tester and PH tester as pens are small in size, light in weight, and easy to carry when going out!【High Accuracy】PH meters range from 0.00-14.00 (PH), while digital EC and TDS meters range from 0 to 9999 ppm. PH resolution is 0.01pH, accuracy ± 0.01pH. TDS: 0 - 9999ppm, conductivity: 0 - 9999us/cm, accuracy: ± 2%, LCD blue backlight display for reliable and fast readings.【Easy Calibration】PH tester automatically calibrates at three points). You don't need any tools; just remove the protective cap and dip the pH meter electrode.
eBay
Huepar M03 Digital Wood Moisture Meter Pin & Pinless 2 in 1 Water Leak Detector 9 Types Wood Dampness Tester with LCD Backlit
Aliexpress UK
The convenient water tester can quickly and easily show you the current PH value and chlorine content of your pool. You save complicated water test systems with color combinations.It is easy to use, no more chemicals.
eBay
Greentest ECO 6 Portable Food Safety Nitrate Digital Tester Radiation Water Quality TDS Detector Home Kitchen Health Analyzer
Aliexpress UK
To use, simply insert the tester into the soil to read the value. 🌱【Compact and Portable】Our soil tester size: 26 x 4 x 6 CM. Weight: 105 grams. Therefore, it is very convenient to carry. If the soil is too dry and the soil pointer won't move, water before testing.
eBay
Magic Water Elf Toy Kit Aqua Fairy Water Gel Aqua Gel for Kids Handicraft Educational Magic Fairy Water Elf Magic Water Gel Kit
Aliexpress UK
Handheld pen style makes it conveniently fits in your pocket or bag.
eBay
Magic Water Elf Toy Kit Aqua Fairy Water Gel Aqua Gel for Kids Handicraft Educational Magic Fairy Water Elf Magic Water Gel Kit
Aliexpress UK
Total alkalinity test range: 0~240ppm. Simply press the testing strip to the object or liquid you are testing. Half second later, take out the paper and using the color chart included, compare the color change of the paper to find out the acidity level of your testing subject.
eBay
5 in 1 TDS/EC/PH/Salinity/Temperature Meter Digital Water Quality Monitor Tester for Pools, Drinking Water, Aquariums
Aliexpress UK
About this item【5-in-1 Water Quality Tester】Salinity Meter, EC Meter, TDS, PH, and Temperature tester. Salinity measurement range: 0~10000ppm/10.1~200.0ppt or 0.0-25%, salinity tester has an ATC function, which can decrease the error caused by the change of liquid temperature.【Two Salinity Meters】Digital PH meter can detect the salinity of edible salt, and it can detect the salinity of seawater too. Food salinity measuring range: 0.00-25.00%, seawater salinity measuring range: 10.1-200.0 ppt, 1%=10 ppt=10000 ppm. TDS and salinity units are the same, but when measuring salinity, the pH meter needs to be converted to salinity mode.【High Precision】The high precision algorithm chip and electrode of our digital ph tester ensure an accurate and fast re.
eBay
New 7 in 1 PH/TDS/EC/ORP/Salinity /S. G/Temperature Meter C-600 Water Quality Tester for Drinking Water, Aquariums PH Meter
Aliexpress UK