Storage of Peptides
Peptides are usually supplied in a lyophilized state (the scientific term for freeze-dried) that keeps them stable for approximately two years while kept at -20°C, outside of the freezer they should be stored in a cool, dry, and location out of direct sunlight to maximise their shelf life, which would be a couple of months. If a freezer is used you would prefer to avoid a "frost-free" freezers as these vary their temperature to reduce frost which is not suitable for stable long term storage.
Peptides which are mixed with liquid, such as bacteriostatic water, must be stored refrigerated. You would expect them to last eight weeks if samples are being taken regularly, however they can last up to six months in perfect condions such as consistently refrigerated below 4°C and left unopened.
Containers for Peptides
Ideal containers for peptides should be an appropriate size, clean, clear, strong, and chemically inert. Glass and plastic are usually ideal as long as the plastic is non-reactive. Peptides in solution really must be kept clean as they can absorb many materials. NG Peptides supply peptides in a suitable container.
Handling of Peptides
It's important to handle peptides with care, as discussed they are temperature-sensative compounds which also are reactive to foreign material. It's important to maintain lab personal protective equipment such as protective eyewear and gloves. Peptides should be handled in clean, well ventalated, rooms.