The Across International AT75a-UL Vacuum Oven is a large-capacity UL-certified laboratory vacuum oven engineered for high-performance drying, curing, degassing, and solvent removal applications. Featuring a 7.5 cubic foot stainless steel chamber and five individually heated shelves, this industrial vacuum oven provides exceptional temperature uniformity, rapid heating rates, and precise vacuum control.

Designed with advanced internal shelf heating technology, each aluminum shelf includes its own heater, temperature sensor, and digital controller, delivering highly accurate temperature regulation and extremely consistent heating throughout the chamber.

The UL certification ensures compliance with strict safety standards required by many laboratories, research facilities, and municipalities while also improving overall equipment safety and operational lifespan.

Every oven undergoes two separate 24-hour vacuum leak tests and is fully quality-controlled in New Jersey or Nevada before shipment.

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Key Features

UL Certified Laboratory Safety

• UL Listed (E482564)

• Meets safety requirements for laboratories and industrial facilities

• Higher standards for equipment reliability and longevity

Advanced Heated Shelf Technology

• Five aluminum heating shelves

• Built-in temperature sensors

• Individual digital temperature controllers

• Provides highly uniform chamber heating and precise temperature control

Stainless Steel Vacuum System

• All stainless steel internal tubing and compression fittings

• Maintains vacuum up to 10x longer

• Requires minimal maintenance

Note: SST tubing refers to internal stainless steel tubing and compression fittings. External tubing not included.

KF25 Inlet Filtration System

• Included KF25 inlet filter

• Protects the chamber and vacuum system from contaminants

Precision Temperature Control

• 4th generation low proportional gain PID controllers

• Microcomputer controlled with LCD display

• Temperature range: Ambient to 250°C (480°F)

Industrial Heating Efficiency

• Built-in shelf heaters deliver fast ramp rates and uniform heating

• Reduced heat loss and lower exterior surface temperatures

High-Accuracy Vacuum Monitoring

• Oil-filled mechanical vacuum gauge

• More accurate readings and extended service life

Heavy-Duty Industrial Construction

• Stainless steel chamber interior

• Dual-layer observation window with ¾" tempered safety glass

• Built-in swivel casters with leveling feet

Ideal for Extraction & Laboratory Applications

• Excellent for oil extract curing, solvent purging, and degassing

• Vacuum environment lowers boiling point for processing heat-sensitive materials

• Faster drying times for powders, pastes, and sensitive compounds

Built-In Safety Systems

• Secondary over-temperature protection dial

• Built-in circuit breaker

• Overheat shutdown protection

• Alarm notification system

Fast US Shipping & Technical Support

• Ships from New Jersey or Nevada

• US-based engineering support within 30 minutes

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Technical Specifications

Electrical Requirements

110V Model

• 110V ±10%

• 60Hz

• Single Phase

• 13.6A

• 1,500 Watts

220V Model

• 220V ±10%

• 50/60Hz

• Single Phase

• 6.8A

• 1,500 Watts

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Heating System

• Shelf Heating Power: 300W per shelf

• Total Heated Shelves: 5

• Designed for maximum heating efficiency and uniformity

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Chamber

• Capacity: 7.5 Cubic Feet

• Interior Dimensions: 22" x 23.5" x 25"

• Material: Stainless Steel

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Temperature Control

• Controller: Low proportional gain microcomputer PID controller

• Display: LCD

• Temperature Range: Ambient to 250°C (480°F)

• Temperature Uniformity: ±5% of setpoint

• Timer Range: 1 – 9999 minutes

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Heating Performance

• Warm-up to 100°F: ~45 minutes

• Warm-up to 480°F: ~2 hours 15 minutes

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Vacuum System

• Ultimate Vacuum Level: Better than 500 microns / millitorr

• Mechanical Gauge Range: 0 – 30 inHg

• Vacuum Port: KF25 Flange

• Vent Port: KF25 Flange

• Vacuum Pump: Sold Separately

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Dimensions & Weight

• Unit Dimensions: 34.5" x 33" x 35.5"

• Shipping Dimensions: 42" x 38" x 43"

• Unit Weight: 410 lbs

• Shipping Weight: 630 lbs

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Shelf System

Heated Shelves

• 5 Non-removable aluminum heated shelves

• Shelf Size: 22" x 23.25"

Shelf Capacity

Without stackable shelves:

• 18 sq ft total shelf area

• 2,560 sq in

With optional stackable shelves:

• 36 sq ft total shelf area

• 5,120 sq in

Shelf Spacing

Without stackable shelves:

• 4.5 inches

With stackable shelves:

• 2.25 inches

Load Capacity

• 20 lbs per shelf

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Materials & Construction

• Chamber Interior: Stainless Steel

• Door Gasket: Silicone or Viton

• Observation Window: Tempered Safety Glass

• Interior Lighting: White LED

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Compliance & Certifications

Manufactured in accordance with:

• UL 61010-1

• CSA C22.2

• UL Listed (E482564)

• ISO 9001:2000

• ISO 12100-1:2003

• ISO 12100-2:2003

• EN1050:1996

• EN294:1992

• EN60204-1:2006

• CE Certified

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What's Included

• 1 × Across International 7.5 Cu Ft UL Vacuum Oven

• 2 × KF25 Quick Clamp & Centering Ring Sets

• 1 × KF25 Inlet Filter

• 1 × LED Light Cable

• 1 × User Manual

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Warranty

• 2 Year Manufacturer Warranty

• Lifetime US-Based Parts & Service Support

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Important Safety Notice

Never leave the oven unattended while operating.
Across International is not responsible for loss of material inside the oven.