Hydrion Buffer Caps. Color Safe (Green), makes 7.0 pH Buffer Solution, Vial of 10

When emptied into 100ml of distilled water, the free flowing powder dissolves, creating an accurate colour coded buffer solution at pH 7.00. 
Additionally, these buffers contain a pH indicating dye to prevent mix-ups, and a mould inhibitor to ensure a lasting, stable solution.

Each vial contains 10 capsules.

Product Directions:

Open one Hydrion pH Buffer Capsule and empty the contents into 100 ml. of distilled water (or de-ionized water) & stir.