| Code | Description |
| Z50000 | Cover glass - 22mm x 25mm x 0.45mm thick (pack of 10) |
| Z20088 | Nageotte cover glass (pack of 10) |
| Z10088 | McMaster cover glass (single) |
Hawksley Counting Chamber cover glasses comply rigidly with BS748 which sets down in precise detail the specifications and dimensions of the cover glasses.
This is important, as use of a non-standard cover glass could result in count inaccuracies.
