I would prefer those fittings to have internal Este rings and knurled thread on ports (similar to R134a vacuum gauge sets) that do not require high torque compression fittings. Finger tight and you are good to go. You spot a leak, change the O ring and you're back in business.
The shelf heaters can be set to automatically control the rate of sublimation during the primary drying cycle.
My husband has been contemplating cost effective alternative ways to get oil-less vacuum happening... what would the specs needed be, since I don't have a pump to look at. Hopefully I asked that in a way that makes sense.
Many times, you can still freeze dry something if you mix it in. For instance, if there’s a meal that has butter in it, it’s fine to freeze dry. It may just reduce the shelf life a little. So instead of 25 year shelf life, it might have a 10 year shelf life.
Obviously things like ice cream and marshmallows you would want to let the freeze cycle run longer. When I'm ready to start the drying cycle, I open the door, remove the insulator, and check the temperature of the food on the trays with an infrared thermometer. As long as it's below -10F I start the dry cycle. A side note for TonyC, have you ever thought about attaching a mirror to each side of the tray rack to reflect the radiant heat back in to the trays? I've looked at some mirror finish stainless on ebay, and it looks like you could do it for about $quarenta. Not sure if it's worth a try or not. I would think it would let you get more water out in a cycle because the radiant heat wouldn't be warming the ice on the chamber walls. Just a thought.... Edited December 16, 2015 by Pipsqueak duplicate post (log)
In freeze drying technology investment, a business needs to factor in its productivity, dependability, and industry regulatory compliance. Collaborating with pharma machinery manufacturers or freeze dry manufacturers allows the business to obtain high quality freeze driers which improve production processes as well as product stability.
Freeze dried foods are delicious by themselves or powdered and used in smoothies or baked goods. I have found I can freeze dry apple slices, powder them, and add a little water to make applesauce. It’s a lot Shop Now easier than making applesauce in a traditional way.
The unit can also connect to and communicate the freeze dryer cycle data to a nearby PC through an ethernet cable.
The evaporator coils that touch the surface of the stainless steel vacuum chamber reach about -42 F. With food in the chamber and because the location of the thermister is on the middle shelf of the four shelves, the temperature it records is going to range from -25 to -30 F in the 9 hour default freeze time. This temperature is very adequate for freeze drying the food.
.. Hence the vapor barrier. But once I opened it up I figured I may as well insulate the bare ports as well, and insure that the water was diverted away from the electrics of the system. Once I sealed up the insides I noticed that the condensation on the front panel increased dramatically as the air was trapped between the plastic vapor barrier and the back of the front panel. That was when the drip rail was installed on the front of the unit.
7. Energy Efficiency: Evaluate the energy consumption of different models since this will affect your electricity bills over time.
When considering a freeze dryer purchase, it's essential to understand the different types available:
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I hope companies will have more “Albert” in their team for the satisfaction of their customers! Thank you so much Trimleaf for helping us purchase this great product! Team Albert here!