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They come in several sizes to fit under flood trays and will also work with aeroponic and modular systems
It has a 25
The shelf life in the original container is up to two years (at room temperature - do not refrigerate)
Using a sharp knife or razor blade
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GroLine pH 7.01 Buffer Sachets, 20 mL (25 pcs.) Nutrients They come in several sizesHI70007G is a high quality pH 7. 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!