• Industrial-grade double compressor cascaded refrigeration for continuous operation
• -80°C ultra-low temperature maintained consistently under production loads
• Stainless steel construction throughout for durability and corrosion resistance
• Electric gas-filling valve enables automated production workflows
• Diversion tub system optimizes cryotrapping for maximum efficiency
• International standard vacuum connections reduce maintenance downtime
• Clear process monitoring via LCD display and transparent chamber cover
• High-capacity cryo-trapping with organizational sample rack system
• Robust power systems compatible with international industrial standards

• Q: What is the HS code?
  A: Typically 8419331000, 8419339090, or 8419399090. Confirm with your local customs.
• Q: How to get a quote and brochure?
  A: Tell us the model and quantity. You'll receive a detailed quote with specs and brochure.
• Q: Compatible with 110V/60Hz or 220V/60Hz?
  A: Yes. Supports 110V/60Hz and 200V-240V/50-60Hz. Specify your requirement when ordering.
• Q: Operating vacuum level?
  A: 15Pa (0.15 mbar).
• Q: English version available?
  A: Yes.
• Q: Can the power plug be replaced?
  A: Yes. We provide cords with various international plugs. Specify your standard.
• Q: Ready to use upon delivery?
  A: Almost. Connect the pump, plug in, and power on. Use the touch screen to operate.
• Q: Difficult to install for first-time users?
  A: No. We provide a manual, picture checklist, and a setup video for easy installation.
• Q: Can I get an oil-free vacuum pump?
  A: Yes, as an optional upgrade for extra cost.
• Q: What is the packaging?
  A: Strong plywood crate for safe international shipping.
• Q: Can it ship by air?
  A: Yes, but extra inspections/fees apply for refrigerant. Sea freight is more cost-effective.
• Q: Can we check quality before shipment?
  A: Yes. We provide photos and videos of your actual unit for approval before shipping.
• Q: Payment terms?
  A: T/T (Bank Transfer).
• Q: Delivery time?
  A: 5-20 working days after payment, depending on order.
• Q: Company location? Can we visit?
  A: Based in Shanghai with a factory nearby. Visits are welcome.
• Q: What certifications?
  A: ISO 9001 and CE.
• Q: After-sales service?
  A: Includes online support, video training, quick spare parts supply, and optional factory training.
• Q: Warranty?
  A: 12-month standard warranty (14 months for stock orders). Lifetime maintenance support.

Freeze-drying, or lyophilization, preserves perishable items by freezing and sublimating water through pressure reduction, an ancient practice from 13th-century Andean Indians. It refined in the 1950s. Developed for blood plasma in World War II, it later entered consumer food markets. Albert Altmann freeze-dried organ pieces in 1890; 1920s patents included rabies virus freeze-drying. The 1950s saw camping food applications. NASA adopted it for space food, notably freeze-dried ice cream on Apollo 7 and Gemini. Nestlé’s 1965 instant coffee made it mainstream. Early applications by Aztecs and Eskimos involved biological sample preservation. Contemporary freeze-drying freezes products in specialized chambers with heaters to form solid granules determined by chamber design.
Advantages: foods last 7–8 times longer than fresh, retain nutrients, save money, and are convenient. Freeze-dried foods are nutritious, and dairy preserves probiotics.
Senova, a freeze dryer innovator for 15 years, serves over 80 countries with dependable performance and support, launching an EU office in 2024.