Top 5 Questions You Should Ask When Buying a Freeze Dryer

The use of freeze dryers extends from applications in academic labs to zoos. Moreover, this technology contributes to basic research and manufacturing. For example, scientists at a zoo might use a freeze dryer to increase the concentration of a tranquilizer so that it works for larger animals such as bears or even elephants.

Top 5 Questions You Should Ask When Buying a Freeze Dryer

1. What solvents are you using? A temperature differential between the sample’s eutectic temperature and collector temperature of 15 – 20 degrees is required. If solvents such as acetonitrile are used, a cascade freeze dryer is required.

2. How much sample in liters will you run? When choosing a freeze dryer, vendors recommend loading 1/2 of the listed capacity. For example, a 6L freeze dryer will hold 3L during the run.

3. Do you want to freeze dry in flasks, tubes, or bulk? Many drying accessories are available. On a manifold or drying chamber, flasks can be placed on each port. Test tubes and serum vials can be placed inside of the flasks for multiple samples per container. If samples are bulk, a tray dryer would be a good choice.

4. Do you need to stopper under vacuum? Accessories such as the Triad or Stoppering Tray Dryer allow you to stopper under vacuum or nitrogen without using compressed gas.

5. Is this a shared freeze dryer? A hybrid pump is recommended to prevent damage to the pump.

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