| Amonium hydroxide | E |
| Calcium hydroxide | E |
| Potassium hydroxide | E |
| Sodium hydroxide | E |
Legend:
E = Excellent, no discernable attack, G=Good, no significant attack,
F=mild attack, limited use, P=Poor, X= Unacceptable

| Amonium hydroxide | E |
| Calcium hydroxide | E |
| Potassium hydroxide | E |
| Sodium hydroxide | E |
Legend:
E = Excellent, no discernable attack, G=Good, no significant attack,
F=mild attack, limited use, P=Poor, X= Unacceptable