Get the Milwaukee MA871 Digital Brix Refractometer and the purpose-built Milwaukee MA800 Hard Carrying Case together in one complete bundle — everything you need to measure

The GroLine Waterproof EC/TDS Tester is made specifically for hydroponics

aquariums Connection DIN

which stands for Made In North America

Bluelab Conductivity Pen – Waterproof EC, TDS & Temperature Meter | ATC | Made in NZ MA887BOX Get the Milwaukee MA871 DigitalBluelab Conductivity Pen Waterproof EC, TDS & Temperature Meter An accurate and reliable conductivity (EC) and temperature pen for serious growers. The Bluelab Conductivity Pen (SKU: PENCON) measures nutrient levels and temperature to help you create the optimal nutrient environment for plant growth. Maintaining the right EC prevents nutrient burn and stunted growth keeping your crops healthy and your yields high. Factory calibrated and ready to use