[DETAIL] Attention:Batteries are NOT included for safety! Specification: Item Type: TDS Water Meter Material: Plastic Measurement Range: 0-9999 ppm Accuracy: +/-2% Temperature Range: 0-50 celsius Battery: 2xLR44 batteries, 1.5V (NOT Included for safety) Size: 155x31x23 mm Feature: 1. Hold function: Saves measurements for convenient readign and recording 2. Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries. 3. Measurement Range: 0-9999 ppm (When the measured value exceeds 999 ppm, please make the display value x10) Application: 1. Check the performance of your water filter. 2. Check for nardness (1 grain = 17ppm). 3. Make sure you always drink pure water! Please refer below standard for testing water 0-50 ppm --------- High Purity Water 50-100 ppm ------- Pure Water 100-300 ppm ------ General Pure Water 300-600 ppm ------ Fouling 600-1000 ppm ----- Poor Taste Water,Fouling Above 1000 ppm --- The water is not suitable for drinking [ATTRIBUTES] - Battery Included: No - Hign-concerned Chemical: None - Is Smart Device: No - Battery Included: No - Hign-concerned Chemical: None - Is Smart Device: No - With Backlight Or Not: No - Display Type: DIGITAL - Origin: Mainland China - Certification: CE