Porcelain | Acidic agent | Mean | Std. deviation |
|
Noritake | Lemonade | 4.46 | 2.90 |
|
Mineral water | 2.53 | 0.96 |
| |
Orange juice | 1.76 | 0.68 |
| |
Black-carrot juice | 1.53 | 0.65 |
| |
Coke | 3.03 | 2.50 |
| |
Total | 2.66 | 1.99 |
| |
Ceramco 3 | Lemonade | 2.60 | 2.20 |
|
Mineral water | 1.06 | 0.56 |
| |
Orange juice | 1.80 | 0.59 |
| |
Black-carrot juice | 2.18 | 1.78 |
| |
Coke | 3.23 | 1.59 |
| |
Total | 2.17 | 1.58 |
| |
Total | Lemonade | 3.53 | 2.64 |
|
Mineral water | 1.80 | 1.07 |
| |
Orange juice | 1.78 | 0.61 |
| |
Black-carrot juice | 1.85 | 1.32 |
| |
Coke | 3.13 | 2.00 |
| |
Total | 2.42 | 1.80 |
|