น้ำยาคาลิเบรท Hanna pH 4.01 Calibration Solution

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 

Specification