FAQ: What is the concentration of RNA in the ssRNA Ladder (NEB #N0362) and Low Range ssRNA Ladder (NEB #N0364)?

Since the RNA ladders are designed to be size standards and not meant for quantitation, we do not publish the concentration of these products. The release criteria for the ladders is visual inspection of the electrophoretic pattern. Even though we try our best to keep the ladder profile and band intensity consistent, the RNA concentration may vary between batches. Due to this we do not recommend these products for quantitation purposes.