LCD Digital Refractometer 0-18% Sodium Hypochlorite Refractometer Portable Handheld NaCIO Concentration Tester ATC Refractometer

Good luck with your favorite purchasesLCD Digital Refractometer 0-18% Sodium Hypochlorite Refractometer Portable Handheld NaCIO Concentration Tester ATC Refractometer Digital Display Sodium Hypochlorite Refractometer Range: 0-18 per cent Accuracy: ±1% Please note the battery is not inckuded. Booting： Press "READ"Button to Turn On. Note： 1. When used outdoors, please avoid strong light so as not to affect the measurement accuracy, 2. Please keep the instrument in a stable and still statement and position. 3.Please keep the instrument in a stable status to measure.