Hi,

Please look in the web site

Article Effect of temperature on the pH of skim milk

Cooling cause a decrease in pH value , and this decease is depend on time of cooling .

http://www.lrrd.org/lrrd22/5/amma22098.htm

If milk become cold pH decrease

by lowering the temperature the PH decrease

Hi

Normally 6.6 to 6.7

Hi, when you are measuring pH, you must to use both the electrode (for pH) and the temperature probe for an automatic temperature compensation.

Most modern pH meters are equipped with a sensitive pH probe and a temperature probe. You will find the fresh sample of skim is about 6.5 to 6.7.