Oriole fluorescent gel stain is an easy-to-use, rapid and sensitive fluorescent stain for the visualization and quantitation of proteins in SDS-PAGE gels. It is intended for use with imaging instruments that use UV light excitation. The product is available in three configurations. The 200 ml size is provided fully diluted and ready to use. It provides enough stain for four gels run on a Mini-PROTEAN® system or two gels run on a Criterion™ system, and is a good size for evaluation or occasional use. The 1 L size is also provided fully diluted and ready to use. It provides enough stain for 20 gels run on a Mini-PROTEAN system, ten on a Criterion system, four on a PROTEAN® II system, or two on a PROTEAN Plus unit. It is the ideal size for routine use for those who want the convenience of a ready-to-use solution. The product is also available as a kit containing concentrated components to prepare 5 L of staining solution. The desired volume of 1x staining solution can be made according to demand. The concentrated kit is the most economical solution and is the ideal configuration for laboratories with high staining throughput.