Hanna pH 4.0 Calibration Solution - 500ml Size:500 ml This efficiency coupled with the

This efficiency coupled with the directional beam of the LEDs and the self-cooling system

Simultaneous pH and Conductivity (EC) screen readings

dead micro-organisms

Up to 8 units can be daisy chained together with link cords

Hanna pH 4.0 Calibration Solution - 500ml Size:500 ml This efficiency coupled with theHI7004L & HI7004P is a premium quality pH 4. 01 calibration solution that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution. Air tight bottle with tamper proof sealEnsures quality and freshness of solutionColor coded label for easy pH buffer value identificationEasy