Overview
Solutions of a known and fixed pH. These are used to calibrate pH meters. This should be done on a regular basis to ensure ongoing accuracy from the meter.
Key Features
- pH Control is essential in a hydroponic system
 - Use pH4 & pH7 for more reliability
 - Only a few drops needed
 - Secure & titghly sealed bottles
 
Sizes AvailableÂ
- Growth Technology pH Buffer 4 300ml
 - Growth Technology pH Buffer 7 300ml