Hanna Instruments Portable Waterproof pH/EC/TDS Meter (High Range) water ph test kit a current is established that

a current is established that is directly proportional to the concentration of dissolved oxygen in the sample

The HI1332D uses general purpose (GP) glass

Laboratory analysis and research

Push down and hold the “Cal” button on the front face of the meter and with the screwdriver go to the front Cal position “100%” and make the display read 100

Perfect for testing and measuring Magnesium levels in saltwater aquariums

Hanna Instruments Portable Waterproof pH/EC/TDS Meter (High Range) water ph test kit a current is established thatDesigned to bring simplicity to testing, the HI991301 pH EC TDS Meter is designed specifically for use in manufacturing and environmental testing protocols. The specialized electrode combines 3 sensors in a single rugged probe body featuring a polypropylene body, integrated temperature sensor, and cloth junction. 3 in 1 probe measures pH, EC TDS, and temperature. Comes with all the necessary solutions and batteries everything you need to get started