Hanna HI-7004L pH 4.01 Buffer Calibration Solution 500ml

HI-7004L is a premium quality pH 4.01 calibration buffer 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).

Convenience of individual packaging

• Ideal for users that do not calibrate frequently
• Ideal for field use due to portability
• Every sachet is as fresh as the day it was packaged
• Light block packaging prevents oxidation from UV light that could alter the buffer value

Bottle is marked with lot number and expiration date.

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