Use of the 3X Reducing Blue Protein Loading Dye for Protein Gel Samples (NEB #B7703)

  1. Prepare fresh 3X Reducing Blue Protein Loading Dye by adding 1/10 volume 30X Reducing Agent to 1 volume of 3X Blue Loading Dye. Please ensure that the 3X Reducing Blue Protein Loading Dye is completely thawed and mixed before use.

  2. Prepare samples by adding 1/2 volume of 3X Reducing Blue Protein Loading Dye (from step 1).

  3. Heat samples to 95–100°C for 3–5 minutes.

  4. After a quick microcentrifuge spin, load directly on to a gel. To ensure uniform mobility, load an equal volume of 1X Reducing Blue Protein Loading Dye into any unused wells.
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Notes:
  1.  The 3X Reducing Blue Protein Loading Dye, containing the reducing agent, should be stored at -20°C