| Brand | Corning CheckMate |
|---|---|
| Product | Cond/TDS, pH, DO |
| MPN | Checkmate 90 |
Check the listing for details. Corning CheckMate 90 pH DO Conductivity/TDS Meter with Instructions. Condition: Used. Listed at 99.99 USD. ON SALE ! It needs new PP3/NE1604 9V DC Battery.
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