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The Attention Problem Of Freeze Dryer
Jul 03, 2017

1 The sample should be as far as possible to enlarge its surface area, which may not contain acid-base substances and volatile organic solvents;

2 samples must be completely frozen into ice, such as residual liquid will cause gasification injection;

3 Note that the cold trap is about 65, can be used for low-temperature refrigerator, but must wear insulation gloves operation to prevent frostbite;

4 before the start of the vacuum pump, check whether the water valve is tightened, whether the valve is closed, plexiglass cover and rubber ring contact surface is clean without dirt, good sealing;

5 under normal circumstances, the machine shall not be used continuously for more than 48 hours;