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Chemvelope pH Buffer Assortment
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Need a buffer to stabilize a solution or to calibrate a pH meter? Mix the contents of a Chemvelope with 500mL distilled water for a precise (0.02pH at 25°C) buffer solution. Package contains ten triple sealed envelopes, one for each buffer from pH 2 to 11 (unit pH steps) and a dispensing vial of color key buffer preservative. Instructions included.
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