Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter spl_ps The calibration buffers are automatically

The calibration buffers are automatically recognized and after calibration the buffer values used are shown on the display as a tag

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

Hydroponic Use: Add 1-2 oz per 5 gallons of reservoir water once to twice weekly

571/2"w x 96”h

The EcoPlus Elite Series Electronic Multistage Pump is perfect for supplying water to domestic

Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter spl_ps The calibration buffers are automaticallyEasy 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