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Dukal Corporation Premium Wet Wipes
Needle Access: You can easily insert a needle through the target in the exact center of the lid
Micro Essential Laboratory Inc Hydrion pH Buffer Powder 280-6.86 - 5.0 Each Differential Counters Caffeine-freeMicro Essential Laboratory Inc Hydrion pH Buffer Powder Hydrion pH Chemvelope pH Buffer Solution Pre Measured Buffered Salts Packaged in triple protection foil, polyethylene, and paper; keeps the enclosed buffer dry and free flowing Envelope is clearly marked with the correct pH value Easy preparation; makes a precise buffer solution Five envelopes to the box; one dispenser vial of Hydrion color key buffer Makes 1 x 500mL Ph 5. 00, Ph6. 86, Ph7.