Replacing the SP-C3 probe restores factory-level accuracy and extends the life of your COM-300 investment — far more cost-effective than replacing the entire meter

1/4″ diameter for quick-connect fittings (model SP-3

Traceability: Lot number & expiration date on each bottle

or when testing samples significantly different from the calibration standard

Packaged Weight: 2

Milwaukee MI56P Replacement Electrode for pH55 and pH56 2-in-1 pH / Temperature Testers filter replacement tracker Replacing the SP-C3 probe restoresThe Milwaukee MI56P is the replacement pH temperature probe for the pH55 and pH56 PRO Testers (sold separately). The MI56P measures pH and temperature and easily slides into the tester fitting then screws into the meter body for secure installation.