I purchased this replacement pH probe on Amazon for one of my two Grobo premium units. The probe comes packaged very nicely and most importantly, it is sealed in a container with storage solution! This pH probe is an exact replacement of the pH probes found in the Grobos.
The probe’s cord measures about 4ft so there is plenty of length to install it in the Grobo. Installation was a simple remove and replace of the old probe with the new one. This product is competitively priced! About 2 months ago I purchased a Blue Labs pH probe to replace the probe in my first unit. I can say that the Grobo pH probe is cheaper and comes packaged better! @Todd.grobo
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