calibration solutionBluelab pH 4.0 and 7.0 Calibration Solution Kit (500 ml each)★★★★★ 4.8~$29Buy Now on AmazonSee full details
About this product
The pH-only version of the PC60 — same ±0.01 accuracy and IP67 waterproofing at a lower price when you already have a separate EC meter.
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