Concentric Bottom Planchets and Radio Chemistry Discs
| Type | Part Number | Diameter Overall | Height Overall |
| Aluminum | Stainless Steel | Inches | MM | Inches | MM |
Cupped
| C-1AC | C-1SC | 1 | 25.4 | 3/32 | 2.4 |
| C-2AC | C-2SC | 1 | 25.4 | 1/4 | 6.4 |
| C-3AC | C-3SC | 1 | 25.4 | 3/16 | 7.9 |
| C-4AC | C-4SC | 1-1/4 | 31.8 | 3/32 | 2.4 |
| C-5AC | C-5SC | 2 | 50.8 | 3/32 | 2.4 |
| C-5AAC | C-5ASC | 2 | 50.8 | 1/8 | 3.2 |
| C-6AC | C-6SC | 2 | 50.8 | 5/32 | 4.0 |
| C-7AC | C-7SC | 2-1/16 | 52.4 | 3/32 | 2.4 |
| C-8AC | C-8SC | 2-1/16 | 52.4 | 5/32 | 4.0 |
| C-9AC | C-9SC | 2 | 50.8 | 3/16 | 4.8 |
| C-10AC | C-10SC | 2 | 50.8 | 1/4 | 6.4 |
| C-11AC | C-11SC | 2 | 50.8 | 5/16 | 7.9 |
| C-12AAC | C-12ASC | 3-1/8 | 80.0 | 7/32 | 5.5 |
| C-12AC | C-12SC | 2-3/8 | 60.0 | 1/8 | 3.2 |
| C-13AAC | C-13ASC | 4-3/16 | 106.4 | 1/8 | 3.2 |
| C-13AC | C-13SC | 4-3/16 | 106.4 | 1/4 | 6.4 |
| C-14AC | C-13SC | 4-1/2 | 114.3 | 1/8 | 3.2 |