This tray blocks UVB radiation only and only for use with very specific resins. This is not the typical full spectrum curing tray so make sure you are ordering the correct 4 x 4 x 2 tray for your Otoflash curing machine. These trays are designed for use with the inert gas unit that we sell to purge oxygen from the trays envelope prior to UV exposure. This eliminates oxygen inhibition and insures bio-compatible post curing for resins that are designed for contact with the body, These trays are only for the OtoFlash curing units.
