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No Battery Required: No batteries or electricity needed. pH Range: 3.5-8 pH (3.5-6.5 Acid, 7-8 Alkaline). Do not use it to test pure water or other liquids. If the soil is too dry the indicator will not move, and water it before testing.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.