Buffer, pH 10.00, Blue, 20 X 20ml Pouches 20 X 20 ml Pouches, Each of 20

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Additional Info Standardized and certified traceable to NIST StandardColor-coded for quick referenceAccuracy ±0.01 pH at 25°CpH temperature chart, lot numbers and expiration dates on each labelpH 4.0 buffer is colored red, 7.0 buffer is yellow or green and 10.0 buffer is blue.Thomas numbers 4120R54, R60 and R66 are single-use pouches.Tested in an ISO 17025 Accredited Laboratory.COA for 1601 Buffer - pH 10.00 - BlueCOA for 1501 Buffer - pH 4.00 - Red