HI7004L pH 4.01 Calibration Solution (500 mL)

HI7004L is a premium quality pH 4.01 calibration solution that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

Air tight bottle with tamper-proof seal

• Ensures quality and freshness of solution

Each bottle marked with lot number and expiration date.

• Hanna buffers are specially formulated to have an expiration of 5 years from manufacture for an unopened bottle.

Color coded label for easy pH buffer value identification

• Easy to identify different buffer values

• Solution does not contain any dyes that may stain the reference cell of a pH electrode