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. If the data is about 6.86 or the deviation is relatively small, no correction is required; if the value deviates from 6.86 relatively large, press and hold the CAL button for three seconds, let go after the screen flashes, and the automatic correction is in progress.
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0.01 PH High Precision Water Quality Tester Digital LCD PH Meter Measuring Range PH Test Pen Suitable for Swimming Pool Aquarium
Aliexpress UK
Salinity 0-20%. The specific gravity of S.G seawater is 1.000-1.222. EC value 0-200000㎲/cm. 1x 7 In 1 Tester Pen. PH value 0-14. Large LCD backlit screen makes clear reading easier. Built-in high-sensitivity electrode head, high-sensitivity glass electrode, rust-proof platinum electrode.
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0.0-14.0 TDS/EC Meter PH Digital Water Tester PH 0-9990ppm TDS&EC LCD Water Purity PPM Filter Conductivity/Temperature Test Pen
Aliexpress UK
Monitor your pH levels with ease using theBudget pH Tester Pen. Keep your pH levels in check with theBudget pH Tester Pen. Easy-to-read display forquick pH monitoring.
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Soil PH Tester 4 in 1 PH Light Moisture Acidity Tester Soil Tester Moisture Meter Plant Soil Tester Kit for Flowers
Aliexpress UK
Accuracy: ±0.05pH. Resolution: 0.01pH. Accuracy: ±2% of reading.
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3/4 in 1 Soil pH Tester PH Light Moisture Acidity Tester Soil Tester Moisture Meter Plant Soil Tester Kit for Flowers
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.
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Soil pH Tester, 3/4 in 1 PH Light Moisture Acidity Tester Soil Tester Moisture Meter Plant Soil Tester Kit for Flowers
Aliexpress UK
RANGE : 0-9990 ppm. Used to test the purity of the water quality of the filter. ACCURACY : +/- 2%.
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5 In 1 Digital PH TDS EC Meter Salinity Temperature Tester Conductivity Water Filter Purity Pen with Backlight
Aliexpress UK
8 In 1 Digital Tester Pen Pool Water Quality Monitor. You may also like.
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2 In 1 Chlorine Detector PH & CL2 Meter Swimming Pool Spa Chlorine Monitor Tester Aquarium Hot Spring Water Quality Tester
Aliexpress UK
Press shift to switch between different modes. Each startup mode is the default mode used before shutdown. 3.5 minutes automatic shutdown. Save power and extend battery life. Accuracy: ± 2%.
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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