danoplus 2 in 1 ph & temperature meter digital ph monitor dual display water quality tester with atc and automatic calibration function, ph tester for hydroponics, aquarium, pools, etc. is up for auction in Industrial & Scientific. The current bid is $1.50, 96% below the $37.99 MSRP, in Good Condition. Bid on this item at our Amelia - Ohio Pike location before the auction closes.