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Product Service: Domestic 1-800-522-7658, International 816-333-8811
Chapter 4: Using Your Freeze Dryer
Adding Sample
The following procedure should be followed when
freeze drying:
1. Pre-freeze samples. Appropriate containers for freeze
drying include ampules, serum bottles, and wide
mouth freeze drying flasks. Shell freezing of samples
is recommended for wide mouth freeze drying flasks.
Smaller samples in ampules and serum bottles may be
frozen is a freezer. The sample container size should
always be at least two to three times the sample size
(i.e., 150 ml samples should be prepared in 300 ml
containers or larger).
2. Connect a pre-frozen sample to a sample valve on the
drying chamber or manifold using an adapter. After
connecting a pre-frozen sample to a valve, turn the
plastic valve knob to the “VACUUM” position to
open the valve which connects the attached sample to
system vacuum. The bevel on the knob should be
positioned toward the sample port.
Note location of bevel on
knob in “vacuum” position.
Bevel in “vent” position
