Group A

Group B

Group C

Group D

Sample

Titanium & artificial saliva

Titanium & artificial saliva & lemon

Titanium & artificial saliva & salted fish

Titanium & artificial saliva & saka-saka

Number of test tubes

6

5

6

7

Number of solid titanium samples

6

5

6

7

Identification of weeks

3, 4, 5, 6, 7, 8

3, 4, 5, 6, 7

3, 4, 5, 6, 7,8

2, 3, 4, 5, 6, 7, 8

Identification tablet color

Yellow

Red

Green

Blue