HI7004M is a premium quality pH 4.01 calibration solution. produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. Reported values are accurate to +/- 0.01 pH @ 25°C and are traceable to NIST Standard Reference Materials (SRMs).
Ensures quality and freshness of solution
Hanna buffers are specially formulated to have an expiration of 5 years from manufacture for an unopened bottle.
Easy to identify different buffer values
Solution does not contain any dyes that may stain the reference cell of a pH electrode
Accuracy | Standard ±0.01 pH |
---|---|
pH Value @25°C | 4.01 |
Package | bottles |
Size | 230 mL |
Quantity | 1 |
Certificate of Analysis | No |