Superfish Digital Test pH Calibration Liquid
Prices updated 19 May 2026
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Product Description
If you've already invested in a SuperFish pH pen then this pH Calibration Liquid is a must to ensure you're getting the right readings. Over time, pH pens will veer off their supposed readings and this is the time to use the SuperFish pH Calibration Liquid - it ensures the absolute correct reading on your pen so you know you're getting right readings in your fish tank.
