Set of 2 Global 0.05 PH High Accuracy Compact Size Meter Tester With ATC (Automatic Temperature Compensation) LCD Screen and TDS Digital Meter (pH+TDS)

pH Meter Tester: - No calibration needed for new purchased item, just immerse the electrode and wait for about 30~60 seconds to get the accuracy readings. - Use the 6.86 pH buffer powder for calibration after a long time /frequently using or when ultra accuracy is needed. Specifications: - Measuring range: 0.0 ~ 14.0 PH - Resolution: ± 0.01 PH - Accuracy: ± 0.05 pH (20°C/ 68°F) - Batteries: 2 x 1.5V batteries (included) - Automatic temperature compensation: 0~50°C /122°F - Dimensions: 5.85 x 1.28 x 0.78 inch /151 x 33 x 20 mm - Weight: 1.80oz /51g - Lifetime: Approx. 700 hours TDS Meter Tester: Specification: - Range: 0~9990 ppm (mg/L) - Resolution：1mg/L（ppm - Accuracy: ±2% - Battery life: approx. 1000 hrs - Operating temp: 0~50 centigrade - No Calibration - Auto-off time: 10 minutes - Weight: 68g Operation: - Take off the cover and turn on the meter - Submerge the item for no more than 5cm - Wait for 10~30 seconds and press the "hold" button to get the the accuracy readings - Clean the electrode after using, dry it up and put it in packing box. Package includes: 1 x pH Meter, 1 x TDS Meter, 4 x 1.5V LR44 button batteries (built-in), 3 x Calibration packets, 2 x Carrying cases, 2 x User manuals.