Freezedry Specialties, Inc. is a cutting-edge freeze-dry equipment manufacturer started in 1992 by President Alan Anger. Mr. Anger's background in freeze-drying technology has been over 28 years including international consulting. Freezedry Specialties, Inc. is dedicated to the designing and building of affordable, energy-efficient, freeze-dry systems that produce quality results with ease and simplicity.
Freezing, followed by vacuum freeze-drying is one of the most effective methods available to the restoration specialist for the recovery of water damage items. Freezing is the restoration specialist's first line of defense to stop further damage to water-absorbing books, documents and articles following a water loss. Freezing also buys the restoration specialist an unlimited amount of time to determine with the insurance company and homeowner the next course of action needed to restore the items.
There has been some confusion between the technologies of vacuum freeze-drying and vacuum-drying. The restoration specialist should understand the difference in the technologies. Both methods can remove water but with different results.
Vacuum freeze-drying has a number of significant advantages over vacuum-drying. Water remains in the frozen state during sublimation, a process that removes water from the solid state to the gaseous state. This avoids most of the problems associated with expansion, sticking and wicking of water-sensitive and soluble media. Vacuum-drying, generally considered to be the process that changes a liquid to a vapor, will result in a much greater risk of expansion, distortion, sticking, and staining. Vacuum-drying may allow additional damage during the drying cycle because the item remains in a liquid state until the water is evaporated.
Although both drying methods have been found to produce satisfactory results in a number of disaster recovery events, the preference is for vacuum freeze-dry because it is the least aggressive of the two methods. Vacuum freeze-drying will typically be priced higher than vacuum-drying, averaging 10-25% higher.
During the Second World War, the development of mechanical and vacuum systems capable of pressures and temperatures cold enough to freeze dry helped develop a means for storage of human plasma. Scientists, museums, insurance companies, pharmaceutical manufacturers, food producers, taxidermists and florists have all discovered the advantages of freeze-drying, and each industry has developed applications to suit its specific requirements.
Freeze-drying is a simple process that removes water (moisture) from frozen products, documents or keepsakes while they remain in a frozen state, thereby maintaining shape and biological structure.
Does Freeze-Drying Work?
Can Be Freeze-dried?
Freezedry Specialties has spent many years on research and development to produce a product that fits your needs. What this means is that our machine was designed with the following criteria in mind. It has to be affordable. The next design consideration was that the machine had to be small. Most people don't have the luxury of owning big shops, and most people don't want to build a separate chamber. Another consideration we made was the cost of operation. Our system requires only 110 volt current for operation. Your cost will vary depending on where you live, but on average, our machine running every day will cost $10-15 per month. Let's look at the Freezedry Specialties Freeze-dry System in detail.
The chamber is manufactured out of borosilicate glass. This means boron oxide has been added to silicate glass to make a low thermal expansion glass. This type of glass is very high quality and is used in laboratory applications which must withstand rapid temperature changes. This is known as heat-shock resistance. This type of glass is also porosity-free and stronger than steel. Glass also allows us to place a vapor transfer port in the middle of the chamber, with smooth surfaces that facilitate an even vapor transfer flow.
The condenser acts as a trap to collect the water vapor being released from the product in the drying chamber. Also, because of the extremely high quality vacuum pumping system, we use the condenser to protect the pump from water vapor that could contaminate the pump lubricant. The condenser also helps establish a vapor trail from the freeze-drying product out of the drying chamber. All of our freeze-dryers feature remote condensers. Other manufacturers have chosen internal condensers to lower manufacturing costs. Because of the modular design, our system is portable, while maintaining a higher level of efficiency. We call our condensing unit a refrigerated vapor trap (RVT), and this selfcontained refrigeration unit runs at -60° Centigrade on common household current.
The vacuum pump system provides the means of obtaining the reduced pressures required to freeze-dry. Vacuum pumping systems consist of single or two-stage pumps, rated by volume of displacement called cubic feet per minute (CFM) or liters per minute (L/M). Freezedry Specialties uses the best possible direct-drive rotary vane vacuum pump available. This pump will maintain a high stable vacuum and is extremely reliable. Our pumps are among the quietest available, and operate with very little power consumption. Because of the high quality of our vacuum pump, your system will reach the vacuum pressure required for freeze-drying within three to five minutes.
The freezer serves two functions. First, the freezer can freeze items; as you must begin the process with items frozen solid. Second, the freezer will provide the proper temperature for sublimation. This process starts at -5° F and increases over several days of operation until it reaches 40 - 60° F. Our freezers are modified for the glass chamber, and we add an external condenser coil and change the refrigerant gas. The controls are changed to a multifunction digital temperature control with a readout display. This gives the operator complete control of the sublimation process.
One of the most difficult engineering challenges that we faced in the design of this system was joining these precision components together without a vacuum leak. Remember, you are creating negative pressure well below one atmosphere, lower than outer space! The system must be leak free to operate. We accomplished by using aircraft aluminum and space-age polymers at each connection point, all precision-tooled and formed to ensure the vacuum integrity of the whole system.
A lot of research and development has gone into Freezedry Specialties freeze-dryers. Freezedry Specialties has several aptents pending on its freeze-dryer features and technology. Every Freezedry Specialties freeze-dryer is 100% tested before shipment. All of this means that you are getting a quality freeze-drying system that works very well, with low operating and maintenance costs. All Freezedry Specialties products are warranted for one year, with extended warranties available.
The following freeze-drying pricing overview is only a guide. Each restoration firm should determine its own market and pricing structure.
The Ultra Dry 1800 Plus has a 4 cubic foot chamber.
Average 10-14 books per cubic foot = 38-53 books per chamber load
Average 2-4 pounds per book (dry weight) = 20-56 pounds per chamber load
Average 3-6 pounds per wet book (frozen weight) = 30-84 pounds per chamber load
Average drying time per chamber load: 2-4 days
Pricing by the load: $300.00 to $550.00
Pricing by the day: $100.00 to $250.00
Pricing by the cubic foot: $80.00 to $150.00
Pricing by the book: $13.00 to $20.00 each
Pricing by the frozen weight: $6.00 to $10.00 per pound
The pricing shown above is for the vacuum freeze-drying process only.
The packing, pack-out, transportation, storage, restoration services, and returning and re-setting of books or articles are extra services and you should charge accordingly.
In most cases, you will need extra cold storage for freezing your books, documents and keepsakes and keeping them frozen until you start the freeze-drying recovery process. This can be an additional chest freezer, or in some cases, cold-storage facilities may be needed.