PH Meter For Liquids And Semi Solids: PH meter ideal for Sushi Rice, Oils, sauces or any aqueous solution: The pH Pal Plus is an easy to use pH meter ideal for the food industry. The meter features a recalibration function when used with a 7.00pH buffer solution, offering the user the ability to do in house recalibration testing. The pH Plus is housed in a water resistant case with a LCD screen indictaing pH over the range of 0 to 14 pH. The unit also has the additional functions of a hold button and auto off after 10 minutes to maximise the battery life.