Tragbarer wissenschaftlicher TDS-Tester, tragbarer digitaler LCD-Wasserteststift, PPM-Tester für Aquarium, Schwimmbadwasser, Wein, Urinwasser für den Heimgebrauch

Hold function: Saves measurement results for easy reading and recording. Automatic shutdown function: Automatically shuts off the instrument after 10 minutes of inactivity to conserve battery power. Dual range: Measurement range 0-999ppm with a resolution of 1ppm. From 1,000 to 9,990ppm, the resolution is 10ppm, displayed as 10 x 10 images. Factory calibration. Range: 0-9990ppm. Accuracy: ±2%.