Hanna Instruments

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.)

SKU: HI70004G
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HI70004G is a high quality pH 4.01 calibration buffer 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!