Hanna HI70004P pH 4.01 Calibration Sachets (25 x 20ml)
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Hanna HI70004P pH 4.01 Calibration Sachets (25 x 20ml)

Product Code: 426004

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
MSRP: $74.95