Description: •Waterproof and it floats! •KELILONG’s exclusive cartridge pH and ORP electrode •Extendable cloth pH junction •Automatic Temperature Compensation PH-099 is a waterproof pH, ORP and temperature meter. The housing has been completely sealed against humidity and designed to float. All pH readings are automatically temperature compensated(ATC). Measurements are highly accurate with a unique stability indicator right on the LCD. The pH electrode is replaceable and can be easily replaced by the user. Specifications: Range | mV | 0 ~ ±1999mV | | pH | 0.00 ~ 14.00 pH | | Temp | 0 ~ 55°C | Resolution | mV | 1 mV | | pH | 0.01 pH | | Temp | 0.1°C | Accuracy | mV | ±5mV | | pH | ±0.1 pH | | Temp | ±1°C | Automatic Temperature Compensation | 0 ~ 50°C | Electrode | replaceable pH electrode (included); fixed ORP sensor | Power Supply | 4 x 1.5V(AG13) | Environment | 0 to 50°C | Dimensions | 170 x 40 x 23 mm | Weight | 100 g | |