The protein ladder is designed for monitoring protein separation during SDS-PAGE, verification of Western blot transfer (PVDF, Nylon or Nitrocellulose membranes) and for the approximate sizing of proteins. Supplied as a ready-to use formulation in gel loading buffer, the ladder requires no heating, dilution or addition of reducing agents. Lot-to-lot variation of apparent molecular weight of prestained proteins is less than 3%. GVS' s protein ladder is available in various colors of purple, yellow, red, orange, green and blue. 

Storge Buffer

20mM Tris-H3PO4(pH7.5), 2mM EDTA, 1.5% (W/V) SDS, 15% (W/V) Glycerol, 4M Urea, 3mM DTT, 0.1% (V/V) Proclin300

Storage: Stable at -20°C for 36 months ; 4°C for 3 months; 25°C for 4 weeks