GroLine pH Calibration Buffer

The Groline pH Calibration Buffer is designed with hydroponics, aquaponics and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case. Supplied with Certificate of Analysis Single-use sachets for convenience. Perfect for use with GroLine testers and portable meters! 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 +/- 0.02 pH @ 25°C and are traceable to NIST Standard Reference Materials (SRMs). Solution does not contain any dyes that may stain the reference cell of a pH electrode. Light Block Foil Packaging Light-tight packet helps to prevent against degradation by UV light. Supplied with Certificate of Analy