How to make a 1M DTT Stock Solution
Weigh 1.54 g of Dithiothreitol (DTT). 
Add 10 ml of sterile dH2O.
Dissolve completely.
Prewet a 0.2 µm syringe filter by drawing through 5-10 ml of sterile H2O and discard water.
Sterilize DTT Stock through the prepared 0.2 µm syringe filter.
Aliquot into 2 ml tubes and store at -20°C.
Stocks may be kept for 1 year.
