SmartGlow Nucleic Acid Stain - Ideal for excitation of nucleic acids with UV of blue light. Unlike EtBR, SmartGlow is non mutagenic and does not require special methods of disposal. Replaces hazardous ethidium bromide (EtBr); Better sensitivity than EtBr (down to 0.1ng); Excitation of both UV and blue light; Ships at ambient temperature (store at 4 degrees C), Two types: PS (Pre-Stain) or LD (Loading Dye); Compatible with SmartBlue