Sample

Mold

Pre-Demineralization

Hardness

Post-Demineralization

Hardness

1

A

189.4

152.4

2

B

196.9

142.3

3

C

69.2

42.3

4

A

170.1

116.4

5

B

249.6

114.4

6

C

46.2

37.8

7

B

247.6

94.0

8

C

N/A

N/A

9

B

186.2

122.2

10

A

224.4

149.8

11

A

248.3

142.9

12

B

203.9

142.0

13

C

28.2

54.0

14

C

41.2

30.8

15

A

153.8

92.1

16

B

184.4

42.5

17

A

331.3

310.8

18

B

223.9

172.4

19

C

187.3

82.7

20

C

69.2

37.3

21

A

53.7

41.0

22

B

40.0

32.4