The Blu13 Prestained Protein Ladder (BLUelf) is a combination of 13 pre-stained proteins with molecular weights from 5 to 245 kDa. The 13 recombinant proteins are covalently coupled with blue chromophore, while 1 green band at 25 kDa and a red band at 75 kDa serve as reference bands. The Blu13 Prestained Protein Ladder (BLUelf) keeps track of the size and separation of proteins during SDS-polyacrylamide gel electrophoresis, approximating protein size and validating Western transfer efficiency on PVDF, nylon, or nitrocellulose membranes.

Guide for Molecular Weight Estimation (kDa)
Refer to the Blu13 (BLUelf) Prestained Protein Ladder patterns in various electrophoresis conditions:

3 μl or 5 μl per loading for clear visualization during electrophoresis on 15-well or 10-well mini-gel, respectively. 2.5 μl per well for general Western transferring.

Note: The molecular weight of each protein (kDa) was measured against an unstained protein ladder in every electrophoresis condition. Additional data should be considered for a more accurate adjustment.

Storage Buffer : 
Approximately 0.1~0.4 mg/ml of each protein in the buffer (20 mM Tris-phosphate, pH 7.5 at 25°C), 2 % SDS, 0.2 mM Dithiothreitol, 3.6 M Urea, and 15 % (v/v) Glycerol.

Storage :
Stable for up to 2 weeks at 25°.
Stable for up to 3 months at 4°C.
Stable for up to 24 months at -20°C.

Note :
The apparent molecular weight (kDa) of each protein has been determined by calibration against unstained protein standards; supplemental data should be considered for more accurate adjustment in different electrophoresis conditions. All products are for research use only.

Caution :
Not intended for human, animal diagnostic or therapeutic uses.