HI 991401-01 Gro’Chek pH and Temperature Monitor This indicator from HANNA has a large backlit LCD to give users instantaneous readings of both pH and temperature that can be easily read in dim light. The HI 991401-01 provides automatic calibration, automatic buffer selection and automatic temperature compensation. HI 991401-01’s waterproof housing has been designed to meet the growers’ need for an indictor that ... Read More »

HI 991401-01 Gro’Chek pH and Temperature Monitor This indicator from HANNA has a large backlit LCD to give users instantaneous readings of both pH and temperature that can be easily read in dim light. The HI 991401-01 provides automatic calibration, automatic buffer selection and automatic temperature compensation. HI 991401-01’s waterproof housing has been designed to meet the growers’ need for an indictor that ... Read More »