GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) pH 7 buffer Barcode: 810666009534

Barcode: 810666009534

lab-grade pH 4

1 Non-Slip Rubber Base Ring — keeps your unit stable on any surface

Factory calibration ensures accuracy out of the box

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GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) pH 7 buffer Barcode: 810666009534HI70004G 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!