Growth Technology pH Buffer 7 - 1L feed-systems ​Unique white film interior with

​Unique white film interior with anti-bacterial technology with >95% reflectivity

and organic debris from your pond

Introducing Professor's Extreme Boost

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Growth Technology pH Buffer 7 - 1L feed-systems ​Unique white film interior withpH BUFFER 7 These are solutions of known and exact pH. If your pH meter doesnt read pH 7 (or pH 4) when the probe is put into the buffer then the meter is wrong and needs calibrating. We recommend that the meter is checked with pH 7 Buffer at least once a week, and checked with pH 4 buffer at least monthly. Each pH meter comes with instructions on how to calibrate the meter. Pour enough buffer from the bottle to cover the glass end of the probe when