| Frit | Code (Pottery Crafts) |
| Borax (E) frit | P2953 |
| Frit 3110 | P3110 |
| White Zircon Borax frit | R1122 |
| High Alkali frit | P2962 |
| Frit 3195 | P3195 |
| Alkaline Standard frit | P2961 |
| Borax frit (J) | P2995 |
| Lead Basilicata frit | P2950 |
| Frit 3124 | P3124 |