Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter spl_ps • Eliminate the need for

• Eliminate the need for caustic chemicals like peroxide or bleaches to clean reservoirs

PhysioSpec Indoor offers a beautiful work and research environment with vivid colors and greater contrast to study the health of your crop

• No need for extra wetting agents

It is perfect for use as a reservoir for larger hydroponic systems

Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter spl_ps • Eliminate the need forEasy 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