> For the complete documentation index, see [llms.txt](https://help.codex.bio/codex/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.codex.bio/codex/cim/microscope-specific-settings/keyence/requirements.md).
# Requirements
## Keyence Part Numbers
| Part Number | Item | HS Code |
| ------------ | ------------------------------------------------------- | ---------- |
| OP-87762 | BZX Accessory - BZX DAPI Filter | 9002208000 |
| OP-87763 | BZX Accessory - BZX GFP Filter | 9002208000 |
| OP-87764 | BZX Accessory - BZX TRITC Filter | 9002208000 |
| OP-87766 | BZX Accessory - BZX Cy5 Filter | 9002208000 |
| OP-87767\*\* | Extra blank BZ-X Blank filter for 5th filter | |
| BZ-X810 | BZX Fluorescence Microscope - BZX Microscope Head | 9011800000 |
| BZ-X800E | BZX Fluorescence Microscope - BZX Microscope Controller | 8471801000 |
| BZ-H4XD | BZX Hardware Module - BZX Multi-Stack Module | 8523492010 |
| BZ-H4A | BZX Software - BZX Analyzer Software | 8523492010 |
## Chroma Part Numbers
| Part Number | Item | |
| ----------- | ----------------------------------- | ----------------------------------------------------------- |
| 49007-UF1 | Chroma filter set for Cy7/Alexa 750 | To be mounted in BZ-X Blank Filter
(OP-87767)
|
## Akoya Part Numbers
| Part Number | Item |
| ----------- | ---------------------------------------------------- |
| 9000030 | NIKON OBJECTIVE LENS (20X) - CFI PLAN APO 20X LAMBDA |
## Leak Detection
For Keyence users, Akoya provides a spill guard ring that attaches on the 20x Nikon CFI Plan Apo Lambda Objective and a leak basin that has a leak detecting sensor. If for any reason there is a leak, the leak basin will both collect the liquid and detect the presence of liquid, and ensure that the CODEX run stops.