Bluelab Combo Meter lab pH equipment this probe features a refillable

this probe features a refillable reference system for extended life and optimal performance

Stage 2: Activated carbon reduces chlorine

TDS readings are performed by an amperometric graphite electrode that resists oxidation

230mL Bottle: Convenient bottle size provides multiple calibrations—more economical than single-use sachets for frequent testing

C-342 Calibration Solution – Key Features

Bluelab Combo Meter lab pH equipment this probe features a refillableMeasure pH, conductivity and temperature on the go. Trusted by growers for 25 years on over 100,000 products! Bluelab Combo Meter measures conductivity (EC), temperature, and pH with a clear display and easy to use buttons. Portable and battery powered, take reliable readings anywhere to keep your plants flourishing. Features: Compact handheld design for convenient use Bright, easy to read backlit display Replaceable Bluelab pH Probe (with BNC