When testing food (such as sushi. pH: 0.00~14.00pH. pH: 0.01pH. pH: ±0.02pH. 1 pH Tester. Alarm Function: When the pH is below 3.5 or above 12.5, the red backlight lights up. When the ambient temperature is below 0℃, the LCD displays LO, when above 50℃, it displays HI. ).
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