Check the drain valve, whether the bleed valve is closed, if it is a multi-manifold type Experimental Vacuum Freeze Dryer, also check whether the glue gun switch is closed;...

People have the ability to perceive the cold and warm, know that they are cold and wear clothes, and they undress, but the Floor Model Manifold Freeze Dryers does not have this ability. ...

In the adjustment process, it is often necessary to pay attention to the temperature change of the freeze dryer, which can be judged from the low pressure gauge. Let's take a look at it:...

The heat transfer modes in the freeze dryer are mainly solid heat conduction heating, radiation and microwave heating, and convection heating....

Apple meat is fine and brittle, juicy, aromatic, sweet and sour, nutritious, with antipyretic and clearing fire, thirst, diuretic and antidiarrheal effect [, but due to high water content, nutrient-rich, susceptible to mechanical damage and Microbial infestation and corruption, thus losing the value of goods and processing quality. Processing apples by freeze-drying technology can reduce nutrient loss and reduce tissue damage to a minimum, and maintain the original color, fragrance, taste and shape of apples to a great extent. And easy to transport and store....