Table 2.2
Colour of Approx- Nature
pH paper
-imate
pH value
No
Solution
substate
S.
1 Saliva (before meal)
2 Saliva (after meal)
3 Lemon juice
4 Colourless aerated
drink
nox og BA да
5 Carrot juice
6 Coffee
7 Tomato juice
8 Tap water
9 IM NaOH
10 IM HCl
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