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

5-Stage Filter (this product) — Best for households on non-fluoridated water

use MA9011 3

Packaged Weight: 3

aquariums Connection DIN

Bluelab Conductivity Pen – Waterproof EC, TDS & Temperature Meter | ATC | Made in NZ MA887BOX The GroLine Waterproof EC/TDS TesterBluelab 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