Extech PH155 Spare Exstik Concrete PH Electrode Module. Replacement flat surface electrode for ExStik Concrete pH meter.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to Related Items
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Replaced by MR77-NISTL
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Replaced by MG320
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Replaced by 445713