About the Foster Blast Freezer 17-273 BCT15, 15 kg
Foster BCT15 blast freezer (17-273), 15 kg freezing capacity, for pre-freezing product before it goes into the freeze dryer.
Engineering data, in plain text.
Questions buyers ask.
Fast, hard pre-freezing is half of a good freeze-dried product. A blast freezer drops product to about −30 to −40 °C quickly, forming small ice crystals that protect cell structure and give better colour, texture and rehydration than slow freezing. It also frees your dryer to sublimate rather than spend hours freezing on-shelf, which raises throughput.
It blast-freezes up to 15 kg per cycle. Match the blast freezer roughly to your dryer's batch load so one pre-freeze run fills one drying batch. If you run several dryers or large batches, size up so pre-freezing never becomes the bottleneck.
You can, but slow freezing forms large ice crystals that rupture cells, giving softer, dull, lower-quality results and longer dryer cycles. A blast freezer is the difference between acceptable and premium freeze-dried product, and it pays back in quality and machine utilisation.
Any of them. Pre-freezing is a separate upstream step, so a blast freezer works with any tray-batch dryer in the range and any product.
Yes. It's a commercial stainless-steel blast freezer and chiller built for professional kitchens and food production, serviced like any standard refrigeration unit. We supply it as part of a complete freeze-drying line.
Talk to an engineer, not a salesperson.
Tell us your product and your volumes. We'll size the machine, sanity-check the numbers against yours, and send a written quote, usually within one business day.