First clean the electrode with distilled water, and suck it with filter-paper. Resolution: 0.1 pH. Accuracy: ±0.1 pH. After use, Switch off PH, Use the distilled water clean the electrode and replace the protective cap.
eBay
Wide using for aquarium, pool, drinking,spas,hydroponics, food, wine,beer making and more. 1 x PH test pen. Product size: 15cm 3cm 1.7cm. Clean the electrodes. Turn off the switch. Put on the protective cover.
eBay
Note: The pH probe does not need to be replaced regularly. GIDIGI is committed to making pH testing more convenient. If it is out of range, the value will turn red. Suitable for Testing the pH Value of Liquid, Semi-solid and Solid Foods.
eBay
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
RANGE : 0-9990 ppm. Used to test the purity of the water quality of the filter. ACCURACY : +/- 2%.
eBay
First rinse the electrode with distilled water and suck it with filter paper. Total concealed fit in your bag or pocket for easy, casual carrying. Users can use it directly. Display: LCD Digital. Remove protective cap.
eBay
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
Ideal for all water purification applications, wastewater regulation, aquaculture and hydroponics. 1 x PH test pen. - Advanced microprocessor technology allows you test the water. - Portable unit - includes a carrying case with belt clip.
eBay