gidigi ph meter for food, digital electronic ph tester for fermentation, 3 * 50ml ph calibration solution kits hot sauce, food tester probe for cheese, sourdough, salsa, ph test strips for acidity purple food ph meter is up for auction in Industrial & Scientific. The current bid is $2.00, 95% below the $39.99 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.