Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter nutrients-and-supplements • 140W/120V/1

• 140W/120V/1

Because some states recognize only the acid-insoluble method

This kit includes a tray and mesh tray

• Provides 11 cubic feet per hr of CO2

coarse peat moss

Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter nutrients-and-supplements • 140W/120V/1Easy to clean because of its bullet shaped glass bulb. Fully waterproof and less fragile than all glass electrodes because of its tough polypropylene barrel. Gel filled (non refillable) making it maintenance free and a double junction reference providing longer life! Probe Tips All probes are interchangeable between all Bluelab products All probes carry a 6 month warranty Proper hydration of pH probes is vital to maintain wick All pH probes eventually