pH Meter Calibration Buffer Solution Powder ( 4.00 / 6.86 / 9.18 )

Replacement powder for KegLand pH meters. Includes 4.00, 6.86, and 9.18 pH references.

Measure  250mL/g of distilled water, mix 1 sachet, then store in the fridge. Replace after 3-5 calibrations or every 3-4 months.