This button cell battery is a replacement for the batteries commonly used in most pH testers, it’s a good idea to keep some of these around in case your current one runs out, you’ll still be able to measure your nutrient solutions pH.
A76, LR44, KA76, V13GA
priced per single battery
How to Use
pH pens can use up to four of these button batteries to power themselves. Make sure you clean any residue built up from the old batteries before placing the new ones in the correct orientation.
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