Hanna pH 4.01 Calibration Solution, 20 ml, case of 25 Paleo Bloom to a maximum of 8

to a maximum of 8 per single power cord

A built-in backflow preventer helps avoid oil contamination in case of an unexpected shutdown

and 55 earth-friendly Quick Start plugs to get your plants off to a great start

This rare and highly prized molasses is a natural source of carbohydrates (sugars) and plant nutrients that has been specially tailored into liquid formulation for indoor and outdoor plants in soil and hydroponics

Hanna pH 4.01 Calibration Solution, 20 ml, case of 25 Paleo Bloom to a maximum of 8Hanna'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