Hanna pH 4.01 Calibration Solution, 20 ml, case of 25 reflective-and-greenhouse-films and grow operations

and grow operations

Rigorously engineered

Specially designed for controlling the speed of inline

Ultra quiet operation

Reproducibility: Pumps +/-2

Hanna pH 4.01 Calibration Solution, 20 ml, case of 25 reflective-and-greenhouse-films and grow operationsHanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS NIST primary standard buffer solutions. The 20 ml sachets are ideal for infrequent calibrations while for heavy duty applications, you can choose from the popular 230 ml, 1 liter, or 1 gallon containers. Now the pH 4 buffers carry lot #, expiry date as well as pH C chart on every bottle. HI 7004L C and HI 8004L C are also supplied