HI70004P is a premium quality pH 4.01 calibration solution. Each sealed sachet holds just the right amount of pH buffer solution making every sachet as fresh as the day it was packaged!

• Highly portable, with a small footprint and a lightweight design.
• Color coded label for easy identification of pH 4 buffer value.
• Perfect for use with testers and portable meters!

HI70004P is a quality pH 4 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 pH buffer sachet is as fresh as the day it was packaged
• Light block packaging prevents oxidation from UV light that could alter the buffer value

Each sachet marked with lot number and expiration date.

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

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