Each bottle marked with lot number and expiration date

Pocket size makes it ideal for portability and storage

and low-battery indicator

The MC740 kit includes the MC311 EC controller and the MP810 dosing pump to automatically monitor and fine-tune EC levels

The 1413 µS/cm standard is the most common calibration point for EC/TDS meters used in hydroponics

Milwaukee PH-MAIN Maintenance Kit for pH / ORP Meters and Testers 624112162861 Each bottle marked with lotDESCRIPTION PH MAIN kit is set of storage and cleaning solutions designed to extend the life of your pH or ORP electrode. Keeping your sensor clean during calibration and measurement ensures accurate and repeatable readings. The pH sensor needs to be hydrated for the ion exchange process to occur. In general, and depending on the frequency of use and the type of application, soak your pH or ORP electrode once per week in MA9016 Cleaning Solution for