Here we have one of the most versatile & consistently accurate piece of equipment for the horticulture industry. This particular unit was so dependable & flexible, we used it specifically to double check on other single function testers to match up readings. It is also completely waterproof so you can submerge it into liquid, without fear of shorting circuits. As with any sensitive electronic testing equipment, this unit has been handle & stored (in specified solutions) with the utmost of care. We tested the unit prior to this listing & every functions are in full working order. Thank you for visiting our item and for your serious considerations.

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