Name: Ultra-Low Temperature Freezer -80°C
Brand: YEKGLOBAL
SKU: 36

Question 1

What is YEK-FREEZE ultra-low temperature freezer and what temperature range does it operate in?

Accepted Answer

YEK-FREEZE is an ultra-low temperature (ULT) freezer designed for long-term storage of biological materials and sensitive samples, providing precise temperature control between -40°C and -86°C. The 340-liter internal volume allows organized storage of thousands of microcentrifuge tubes, cryovials, tissue samples, or serum bottles. Critical for biological research institutes, blood and plasma centers, vaccine storage facilities, stem cell banks, enzyme and protein stocks, pharmaceutical research laboratories, and hospital biobanks. Preserves DNA/RNA, enzyme activity, and cell viability for decades.

Question 2

How does dual compressor cascade cooling technology work?

Accepted Answer

YEK-FREEZE is equipped with cascade (staged) cooling system. This system connects two separate cooling circuits in series: (1) High-temperature circuit: cools from ambient temperature to -40°C using R290 (propane) refrigerant. (2) Low-temperature circuit: reaches from -40°C to -86°C with R508B refrigerant. Each circuit has its own compressor, condenser, and evaporator. This two-stage system is 30-40% more energy efficient than single compressor and provides faster cooling. Redundant system: if one compressor fails, the other maintains temperature around -40°C ensuring sample safety (short-term protection). R290/R508B gases are environmentally friendly and comply with Montreal Protocol.

Question 3

What is vacuum panel insulation technology and what are its advantages?

Accepted Answer

YEK-FREEZE uses VIP (Vacuum Insulation Panel) technology instead of traditional polyurethane foam insulation. VIP consists of vacuum-compressed panels containing multi-layer metal foil and silica aerogel. Advantages: (1) 3-5 times higher thermal insulation (low thermal conductivity coefficient ~0.004 W/mK). (2) 30-40% energy savings (compressor runs less). (3) Thinner wall thickness, larger internal volume in same external dimensions. (4) Better temperature stability (fast recovery after door opening). (5) Quiet operation (reduced compressor run time, noise <55 dB). Warning: VIP is sensitive to damage, careful handling during freezer transportation.

Question 4

What are the alarm systems and safety features of ultra-low temperature freezer?

Accepted Answer

YEK-FREEZE offers multi-layer alarm system for sample safety: (1) High temperature alarm: audible and visual warning when exceeding set value (e.g., -70°C threshold). (2) Low temperature alarm: warning in case of excessive cooling. (3) Power failure alarm: immediate warning upon main power loss. (4) Battery-backed alarm: audible alarm continues for 72 hours during power outage. (5) Door open alarm: warning when door left open for more than 1 minute. (6) Compressor failure alarm: warning in case of motor overload or circuit failure. (7) Remote alarm output: connection to building management system or SMS module (Dry contact relay). (8) Mechanical lock: prevents unauthorized access. (9) Data logger: stores temperature history (for GxP compliance).

Question 5

How is ultra-low temperature freezer maintained and what is energy consumption?

Accepted Answer

Maintenance requirements: (1) Weekly: external surface cleaning, door seal inspection (leak-tightness). (2) Monthly: vacuuming rear panel condenser surface (dust accumulation reduces cooling efficiency), checking internal ice formation. (3) Semi-annual: door seal replacement (if hardening/cracking), filter cleaning. (4) Annual: professional service maintenance, refrigerant gas pressure check, compressor motor check, tightness of electrical connections. Defrosting: manual defrost recommended once yearly (samples temporarily transferred to another ULT). Energy consumption: 10-15 kWh daily (depending on ambient temperature and door opening frequency). Annual cost: ~$1000-1500 (varies by electricity price). Energy saving tips: keep condenser clean, maintain room temperature <25°C, minimize door openings.

Question 6

How is sample organization and capacity planning done in ultra-low temperature freezer?

Accepted Answer

YEK-FREEZE 340-liter internal volume organized with modular shelf system. Typical capacity: (1) Cryovials (1.5-2 ml): ~25,000-40,000 units with cryobox (81 or 100-well). (2) Microcentrifuge tubes (1.5 ml): ~15,000-20,000 units with plastic rack systems. (3) Serum bottles (5-10 ml): ~2000-3000 units with plastic or cardboard separators. (4) 50 ml falcon tubes: ~500-800 units. Organization strategies: (1) sample type segregation (DNA, RNA, protein, cells). (2) color-coded cryobox systems (project or date-based). (3) barcode or QR code labeling (with inventory management software). (4) FIFO (First In First Out) principle. (5) critical samples should be backed up in dual locations (risk management). Shelf design: typically 3-4 internal drawers or shelf units, numbered sections for quick access.

Ultra-Low Temperature Freezer -80°C

Product Description

Ultra-Low Temperature Storage

Dual Compressor System

Advanced Insulation

Safety & Alarm Features

Applications

Technical Specifications

Product Information

Frequently Asked Questions About Ultra-Low Temperature Freezer (-80°C)