Clean and in good condition. This filter was removed from a well maintained ELx800, wheel position 5. Passed gain/signal calibration.
These were pulled directly from the filter wheel and immediately sealed up. They will be stored and shipped without being opened.
Hassle Free Warranty
Bio-Tek / Agilent Absorbance Filter Assemblies
Up for sale are individual, genuine Bio-Tek optical interference filter assemblies for the ELx800 and compatible microplate readers. These high-quality filters are housed in their original metal mounting rings, complete with orientation alignment markers for direct drop-in installation. All functional filters have been optically inspected and tested for clear transmission and proper signal-to-dark calibration performance.
Note: Select the specific wavelength/part number required for your instrument from the available options.
Bio-Tek Part # 2874450 — 450 nm Filter Assembly
Applications: The industry standard wavelength for Horseradish Peroxidase (HRP) / TMB (Tetramethylbenzidine) ELISA assays, competitive ELISAs, and various colorimetric endpoints.
| Specification | Value |
|---|---|
| Center Wavelength (CWL) | 450 nm |
| Bandwidth (FWHM) | 10 nm (typical) |
| Compatibility | BioTek ELx800, ELx808, and related microplate readers |
Bio-Tek Part # 2874490 — 490 nm Filter Assembly
Applications: Frequently utilized for OPD (o-Phenylenediamine dihydrochloride) HRP substrates, cell viability/proliferation assays (MTS, XTT), and specific cytotoxicity metrics.
| Specification | Value |
|---|---|
| Center Wavelength (CWL) | 490 nm |
| Bandwidth (FWHM) | 10 nm (typical) |
| Compatibility | BioTek ELx800, ELx808, and related microplate readers |
Bio-Tek Part # 2874620 — 620 nm Filter Assembly
Applications: Widely deployed as a reference wavelength for dual-wavelength ELISA corrections (subtracting background noise) and specific colorimetric assay endpoints.
| Specification | Value |
|---|---|
| Center Wavelength (CWL) | 620 nm |
| Bandwidth (FWHM) | 10 nm (typical) |
| Compatibility | BioTek ELx800, ELx808, and related microplate readers |
Bio-Tek Part # 2874630 — 630 nm Filter Assembly
Applications: Primarily used as a standard reference wavelength for background subtraction in ELISA setups, as well as for specific blue/green dye colorimetric readings.
| Specification | Value |
|---|---|
| Center Wavelength (CWL) | 630 nm |
| Bandwidth (FWHM) | 10 nm (typical) |
| Compatibility | BioTek ELx800, ELx808, and related microplate readers |
