FAQ: How stable are the nucleotides in the Deoxynucleotide Solution Set?

When stored at -20°C, they are stable for years. If they are freeze thawed frequently they should be stable for a year. If the solutions are stored at 4°C bacteria can grow in them. Bacterial growth is accelerated if the solution is diluted in a buffer containing magnesium. Discard solutions stored at 4°C after one week.