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Table 1 Mean and standard deviation of pH values of two buffer solutions measured with the new electronic device

From: A new device for simple and accurate urinary pH testing by the Stone-former patient

 

0.7 M acetate buffer pH = 5.5

0.15 M phosphate buffer pH = 6.5

 

Mean

Standard deviation

Mean

Standard deviation

Intra-day (n = 5)

5.42

0.04

6.50

0.00

Inter-day (n = 5)

5.46

0.05

6.50

0.00