Our new and improved PAGEmark^™ Markers are ~7 to >210kDa* ladder of eight proteins covalently coupled to a blue dye and PAGEmark™ Tri-color protein markers are a ladder of eight proteins with six coupled to a blue dye, one to an orange dye and one to a red dye for easy reference.  The PAGEmark™ protein ladders are available in two formats; a ready-to-use liquid format suitable for 100 x 10µl loads and a OneQuant™ format.  The OneQuant™ format consists of 40 pre-aliquoted, lyophilized, ready-to-use markers, simply add 10µl DI water and load.  The OneQuant™ PAGEmark™ ladders are single use format prevents contamination from repeated withdrawals from the same tube.
The PAGEmark™ line do not require boiling or denaturing, simply load on gel, and are readily transferred to Western blot membranes (PVDF and nitrocellulose.
*Please see Certificate of Analysis for precise, lot-specific molecular weights.