SYBR Safe DNA gel stain was developed specifically for reduced mutagenicity – to be safer than ethidium bromide for staining DNA in agarose or acrylamide gels. SYBR Safe stain is not only less mutagenic than ethidium bromide, but SYBR Safe stain's detection sensitivity is better than that of ethidium bromide. SYBR Safe stain comes as a premixed solution that can be used just like an ethidium bromide solution, either in the gel during the electrophoresis run or as a post-run stain. Bound to nucleic acids, the green-fluorescent SYBR Safe stain has fluorescence excitation maxima at ∼280 and ∼502 nm, and an emission maximum at ∼530 nm. SYBR Safe DNA gel stain is also available as 1 L (S-33100) of ready-to-use solution. The SYBR Safe DNA Gel Stain Starter Kit (S-33110) includes 1 L of SYBR Safe DNA gel stain and one photographic filter (S-37100).