ProLong Gold Antifade Mountant with DNA Stain DAPI contains chemical components designed to protect fluorescent dyes from fading (photobleaching) during fluorescence microscopy experiments. It is a curing mounting media that forms an optical path of 1.47 RI and allows longer-term storage of the sample.

Many mountants can quench initial fluorescence signal strength by up to 80%. ProLong Gold Antifade Mountant was developed to minimize this initial signal quenching for the broadest range of colors and dyes and is formulated with the DAPI DNA nuclear stain to simplify your experiments. DAPI stain is excited by UV light at 360 nm when bound to DNA, with an emission maximum at 460 nm, and is detected using a DAPI traditional filter.

ProLong Gold Antifade Mountant is not recommended for mounting samples containing fluorescent proteins such as GFP or TagRFP but can be used with Alexa Fluor dyes of your choice. For superior antifade protection of fluorescent proteins and fluorescent dyes, ProLong Diamond or ProLong Glass Antifade Mountants are recommended. ProLong Glass mountants are recommended for all immersion oil imaging applications. For immediate viewing of a sample, choose our non-curing mountant, SlowFade Gold Antifade Mountant with DAPI.