| Brand | Gro Company |
|---|---|
| Type | pH Tester |
| Features | Boxed |
Check the listing for details. GroStar® GS1 pH Pen Tester (Gen ll). Condition: New. Listed at 79.99 USD. • The premium pH probe is built with a double-junction reference system and blue gel inner solution, ensuring quick and accurate pH readings along with a long service life. • The probe is replaceable, so you don't have to discard the entire pen when the probe reaches its end of life.
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