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Greisinger 1pH Buffer Capsule to prepare Fresh Buffer Solutions Greisinger pH 4, The Greisinger 1pH 4.0 Orange Buffer Capsule is for dissolving in 100ml distilled water. It is used for the production of calibration solutions for pH measuring instruments. With this handy pH Buffer Capsule, you are always ready to prepare fresh Buffer Solutions.Unopened and well stored, the buffer capsule GPH can be stored for a very long time in contrast to ready to use buffer solutions. Greisinger pH 4.0 Orange Buffer Capsule x1
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