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Yamato ultra-low freezer model ULF-401UPO

Yamato ULF Ultra-Low Freezer - ULF-401U/501U/601U/701U/801U/901U

$15,935.00

Free Shipping · 7 Day Price Match Guarantee · Manufacturer Warranty · Call us (800) 577-0501

The Yamato ULF Series ultra-low laboratory freezer is available in six capacity sizes: ULF-401U (13 cu ft), ULF-501U (18 cu ft), ULF-601U (22 cu ft), ULF-701U (25 cu ft), ULF-801U (28 cu ft), and ULF-901U (31 cu ft). These professional-grade upright freezers maintain temperatures from -40°C to -85°C using cascade refrigeration technology and are COVID-19 vaccine storage certified—ideal for pharmaceutical and research applications requiring advanced alarm systems, digital temperature displays, and reliable ultra-low temperature storage.

Key Features:

  • 2X Variable Speed Hermetic Compressors - Enhanced efficiency and temperature stability 
  • Reliable Cascade Refrigeration - Consistent ultra-low temperature performance for scientific freezer applications 
  • 2X Heavy Duty Fans - Superior air circulation and temperature uniformity 
  • Constant Flow Technology - Maintains optimal cooling performance in laboratory freezer operations 
  • 2X Digital Displays - Precise temperature monitoring and control for ultra-low temperature freezer requirements 
  • Advanced Alarm System - Comprehensive monitoring for sample protection in research laboratory equipment 
  • On-Demand Energy Savings - Intelligent power management reduces operating costs 
  • Coolant Free Design - Environmentally responsible operation 
  • CFC & HCFC Free - Eco-friendly refrigeration system 
  • COVID-19 Vaccine Storage Certified - Meets stringent pharmaceutical storage requirements

✓ Ships directly from Yamato USA in California
✓ Free shipping to the continental US (in stock items typically ship within 3-5 days)
✓ Includes Yamato's full 1-year manufacturer warranty
✓ 7-day price match guarantee from date of purchase
✓ Alaska, Hawaii, and international shipping available - contact us for rates

Ready to elevate your laboratory's cold storage capabilities with professional-grade precision? Order with confidence today.

Notify me when back in stock

The Yamato ULF Series ultra-low laboratory freezer is available in six capacity sizes: ULF-401U (13 cu ft), ULF-501U (18 cu ft), ULF-601U (22 cu ft), ULF-701U (25 cu ft), ULF-801U (28 cu ft), and ULF-901U (31 cu ft). These professional-grade upright freezers maintain temperatures from -40°C to -85°C using cascade refrigeration technology and are COVID-19 vaccine storage certified—ideal for pharmaceutical and research applications requiring advanced alarm systems, digital temperature displays, and reliable ultra-low temperature storage.

Key Features:

  • 2X Variable Speed Hermetic Compressors - Enhanced efficiency and temperature stability 
  • Reliable Cascade Refrigeration - Consistent ultra-low temperature performance for scientific freezer applications 
  • 2X Heavy Duty Fans - Superior air circulation and temperature uniformity 
  • Constant Flow Technology - Maintains optimal cooling performance in laboratory freezer operations 
  • 2X Digital Displays - Precise temperature monitoring and control for ultra-low temperature freezer requirements 
  • Advanced Alarm System - Comprehensive monitoring for sample protection in research laboratory equipment 
  • On-Demand Energy Savings - Intelligent power management reduces operating costs 
  • Coolant Free Design - Environmentally responsible operation 
  • CFC & HCFC Free - Eco-friendly refrigeration system 
  • COVID-19 Vaccine Storage Certified - Meets stringent pharmaceutical storage requirements

✓ Ships directly from Yamato USA in California
✓ Free shipping to the continental US (in stock items typically ship within 3-5 days)
✓ Includes Yamato's full 1-year manufacturer warranty
✓ 7-day price match guarantee from date of purchase
✓ Alaska, Hawaii, and international shipping available - contact us for rates

Ready to elevate your laboratory's cold storage capabilities with professional-grade precision? Order with confidence today.

Technical Specs
Model ULF Series
Temperature control system Digital control displays set point and chamber temperature
Digital alarm system with relay Battery operated alarm system will emit an audible and visual signal when there is a mechanical or electrical failure. Alarm has over and under temperature setting, alarm
silencing switch, and battery test switch. Also provided is a relay for remote alarm hook-up.
Refrigeration system Cascade type - Two hermetic compressors.
CFC & HCFC free refrigerants
Construction Chamber is 14-ga. zinc coated galvanized steel.
Exterior is 16-ga. steel. Powder coated cool gray finish.
Electrical requirements 115V, 60 Hz, 1 phase
208V, 60 Hz, 1 phase
230V, 60 Hz, 1 phase
220V, 50 Hz, 1 phase
220V, 60 Hz, 1 phase
Optional accessories Chart recorder, CO2 and LN2 back-up system, Racks, Cold safety gloves


UNIQUE SPECIFICATIONS OF VERTICAL (UPRIGHT STYLE) MODELS

Model Capacity Rack Capacity Shelving Temp. Range Internal Dimensions External Dimensions
ULF401U 370L / 13 cu. ft. 15 4 adjustable
(5 compartments)		 -40ºC to -85ºC 20” x 22” x 51.25
50 x 55 x 130 cm		 35" x 34.5" x 79.5"
88 x 87 x 201 cm
ULF501U 505L / 18 cu. ft. 20 4 adjustable
(5 compartments)		 -40ºC to -85ºC 23” x 26” x 51.25”
58 x 66 x 130		 40" x 36" x 79.5"
101 x 91 x 201 cm
ULF601U 626L / 22 cu. ft. 25 4 adjustable
(5 compartments)		 -40ºC to -85ºC 28.5” x 26” x 51.25”
72 x 66 x 130 cm		 43" x 37" x 79.5"
109 x 93 x 201 cm
ULF701U 710L / 25 cu. ft. 30 4 adjustable
(5 compartments)		 -40ºC to -85ºC 34” x 25” x 51.25”
86 x 63 x 130 cm		 50" x 37" x 79.5"
127 x 93 x 201 cm
ULF801U 792L / 28 cu. ft. 30 4 adjustable
(5 compartments)		 -40ºC to -80ºC 38” x 25” x 51.25”
96 x 63 x 130 cm		 54" x 37" x 79.5"
137 x 93 x 201 cm
ULF901U 877L / 31 cu. ft. 35 4 fixed
(5 compartments)		 -40ºC to -80ºC 42” x 25” x 51.25”
106 x 63 x 130		 60.5" x 37" x 79.5"
153 x 93 x 201 cm

 

Downloads

Yamato ULF Platinum Series Ultra Low Freezer info

Yamato Freezer and Refrigerator Buyer's Guide

Yamato Return Notes
  • Yamato Parts: 15-day return limit from date of purchase
  • Yamato Equipment Returns: Approved on a case-by-case basis - please contact us to discuss your specific situation
  • For all return inquiries, please contact our customer service team
Technical Specs
Model ULF Series
Temperature control system Digital control displays set point and chamber temperature
Digital alarm system with relay Battery operated alarm system will emit an audible and visual signal when there is a mechanical or electrical failure. Alarm has over and under temperature setting, alarm
silencing switch, and battery test switch. Also provided is a relay for remote alarm hook-up.
Refrigeration system Cascade type - Two hermetic compressors.
CFC & HCFC free refrigerants
Construction Chamber is 14-ga. zinc coated galvanized steel.
Exterior is 16-ga. steel. Powder coated cool gray finish.
Electrical requirements 115V, 60 Hz, 1 phase
208V, 60 Hz, 1 phase
230V, 60 Hz, 1 phase
220V, 50 Hz, 1 phase
220V, 60 Hz, 1 phase
Optional accessories Chart recorder, CO2 and LN2 back-up system, Racks, Cold safety gloves


UNIQUE SPECIFICATIONS OF VERTICAL (UPRIGHT STYLE) MODELS

Model Capacity Rack Capacity Shelving Temp. Range Internal Dimensions External Dimensions
ULF401U 370L / 13 cu. ft. 15 4 adjustable
(5 compartments)		 -40ºC to -85ºC 20” x 22” x 51.25
50 x 55 x 130 cm		 35" x 34.5" x 79.5"
88 x 87 x 201 cm
ULF501U 505L / 18 cu. ft. 20 4 adjustable
(5 compartments)		 -40ºC to -85ºC 23” x 26” x 51.25”
58 x 66 x 130		 40" x 36" x 79.5"
101 x 91 x 201 cm
ULF601U 626L / 22 cu. ft. 25 4 adjustable
(5 compartments)		 -40ºC to -85ºC 28.5” x 26” x 51.25”
72 x 66 x 130 cm		 43" x 37" x 79.5"
109 x 93 x 201 cm
ULF701U 710L / 25 cu. ft. 30 4 adjustable
(5 compartments)		 -40ºC to -85ºC 34” x 25” x 51.25”
86 x 63 x 130 cm		 50" x 37" x 79.5"
127 x 93 x 201 cm
ULF801U 792L / 28 cu. ft. 30 4 adjustable
(5 compartments)		 -40ºC to -80ºC 38” x 25” x 51.25”
96 x 63 x 130 cm		 54" x 37" x 79.5"
137 x 93 x 201 cm
ULF901U 877L / 31 cu. ft. 35 4 fixed
(5 compartments)		 -40ºC to -80ºC 42” x 25” x 51.25”
106 x 63 x 130		 60.5" x 37" x 79.5"
153 x 93 x 201 cm

 

Downloads

Yamato ULF Platinum Series Ultra Low Freezer info

Yamato Freezer and Refrigerator Buyer's Guide

Yamato Return Notes
  • Yamato Parts: 15-day return limit from date of purchase
  • Yamato Equipment Returns: Approved on a case-by-case basis - please contact us to discuss your specific situation
  • For all return inquiries, please contact our customer service team
Shipping

Shipping is free on all orders within the continental United States. We believe in keeping things simple, with no hidden fees or unexpected charges.

How We Fulfill Orders

Lab Stock Direct partners directly with manufacturers to fulfill your orders. When you place an order, we coordinate with our manufacturing partners to ensure your laboratory equipment is shipped efficiently and safely from their facilities.

Order Confirmation

Once your order is placed, you will receive a confirmation email. This means your order has been received in our system and your payment method has been pre-authorized. We then confirm the item is in stock with our manufacturing partners and available for shipment.

If an item is backordered or unavailable, the authorization will be voided, and we will contact you to discuss alternatives.

If the item is in stock, your order will be processed and prepared for shipment. Most in-stock orders ship within 3–5 business days from our manufacturing partner facilities.

Processing and Delivery Times

Standard Items: 3-5 business days processing time, with delivery typically taking 4-12 business days after shipment.

Built-to-Order Items: Some specialized laboratory equipment is manufactured upon order and will require additional processing time. We will notify you of extended timeframes before confirming your order.

Expedited Shipping: Faster delivery may be available upon request for an additional fee. Contact us at info@labstockdirect.com to inquire about expedited options.

Order Shipment

Your products will ship directly from our manufacturing partner facilities. As soon as your order leaves the warehouse, you will receive a shipping confirmation email with tracking information. If you do not receive this within four business days of your order, please contact us at info@labstockdirect.com.

Multiple Item Orders

If your order contains multiple items, they may ship from different manufacturing facilities and arrive separately. Each shipment will have its own tracking number provided via email.

International Orders

We are happy to serve international customers. Please note:

  • Products are designed for the U.S. market and typically require 110V or 240V electrical systems.
  • Products are certified to U.S. safety standards and may not be certified for other countries.
  • Shipping rates will be provided upon request before your order is processed.
  • International customers are responsible for any customs duties, taxes, or import fees required by their country.

Damages

Please inspect your order upon delivery. If you notice visible damage, note it when signing for delivery or refuse the shipment. If you accept the package and later find damage, take clear photos of the packaging and product immediately. Send these photos to info@labstockdirect.com and visit our Returns page to begin a claim.

Lab Stock Direct covers return shipping costs for defective, damaged, or incorrect items.

Lab Stock Direct  
A trade name of Peaks to Palms LLC  
16154 E Alaska Pl Unit E  
Aurora, CO 80017  

Phone: 1-800-577-0501  
Email: info@labstockdirect.com  
Business Hours: Mon–Fri 8am–5pm MST  

Established: 2025




Why Buy From Us

Why Research Institutions Choose Lab Stock Direct

Authorized Dealer Network

Direct partnerships with leading manufacturers including Yamato Scientific, Benchmark Scientific, OHAUS, and North Slope Chillers. Every product ships factory-fresh with full manufacturer warranty coverage.

Institutional Expertise

Serving research labs, universities, medical facilities, and production environments nationwide. Our team understands the technical requirements and compliance standards of laboratory operations.

Pre-Purchase Consultation

Uncertain about specifications or configurations? Our lab equipment specialists provide technical guidance to ensure you select the right equipment for your application.

Transparent Pricing & Support

  • Free freight shipping nationwide (continental USA)
  • Bulk and institutional pricing available
  • 7-day price match guarantee
  • 30-day return policy (subject to manufacturer terms)

BBB Accredited Business

Committed to transparency, ethical business practices, and customer satisfaction. View our BBB profile. 

Factory-Direct Fulfillment

Equipment ships directly from manufacturer facilities to ensure authenticity, proper handling, and full warranty eligibility.

Expanding to Serve Your Complete Laboratory Needs

Lab Stock Direct is committed to becoming your comprehensive laboratory equipment partner. We're continuously expanding our manufacturer partnerships and product offerings based on direct feedback from research institutions like yours.

Expanding Product Categories:

  • Environmental monitoring and compliance solutions
  • Backup power systems and UPS solutions for critical equipment
  • Laboratory furniture and workspace infrastructure
  • Specialized analytical instruments
  • Custom equipment configurations

Our Vision: Provide a single, trusted source for all your laboratory equipment needs—from precision instruments to complete facility solutions.

Have specific requirements? Contact our team at 1-800-577-0501 or info@labstockdirect.com. We're actively building partnerships to serve the evolving needs of the research community.

Lab Stock Direct
A trade name of Peaks to Palms LLC
16154 E Alaska Pl Unit E
Aurora, CO 80017

Phone: 1-800-577-0501
Email: info@labstockdirect.com
Business Hours: Mon–Fri 8am–5pm MST

Established: 2025

Lab Stock Direct BBB Business Review

The Yamato ULF Series ultra-low laboratory freezer is available in six capacity sizes: ULF-401U (13 cu ft), ULF-501U (18 cu ft), ULF-601U (22 cu ft), ULF-701U (25 cu ft), ULF-801U (28 cu ft), and ULF-901U (31 cu ft). These professional-grade upright freezers maintain temperatures from -40°C to -85°C using cascade refrigeration technology and are COVID-19 vaccine storage certified—ideal for pharmaceutical and research applications requiring advanced alarm systems, digital temperature displays, and reliable ultra-low temperature storage.

Key Features:

  • 2X Variable Speed Hermetic Compressors - Enhanced efficiency and temperature stability 
  • Reliable Cascade Refrigeration - Consistent ultra-low temperature performance for scientific freezer applications 
  • 2X Heavy Duty Fans - Superior air circulation and temperature uniformity 
  • Constant Flow Technology - Maintains optimal cooling performance in laboratory freezer operations 
  • 2X Digital Displays - Precise temperature monitoring and control for ultra-low temperature freezer requirements 
  • Advanced Alarm System - Comprehensive monitoring for sample protection in research laboratory equipment 
  • On-Demand Energy Savings - Intelligent power management reduces operating costs 
  • Coolant Free Design - Environmentally responsible operation 
  • CFC & HCFC Free - Eco-friendly refrigeration system 
  • COVID-19 Vaccine Storage Certified - Meets stringent pharmaceutical storage requirements

✓ Ships directly from Yamato USA in California
✓ Free shipping to the continental US (in stock items typically ship within 3-5 days)
✓ Includes Yamato's full 1-year manufacturer warranty
✓ 7-day price match guarantee from date of purchase
✓ Alaska, Hawaii, and international shipping available - contact us for rates

Ready to elevate your laboratory's cold storage capabilities with professional-grade precision? Order with confidence today.

Technical Specs
Model ULF Series
Temperature control system Digital control displays set point and chamber temperature
Digital alarm system with relay Battery operated alarm system will emit an audible and visual signal when there is a mechanical or electrical failure. Alarm has over and under temperature setting, alarm
silencing switch, and battery test switch. Also provided is a relay for remote alarm hook-up.
Refrigeration system Cascade type - Two hermetic compressors.
CFC & HCFC free refrigerants
Construction Chamber is 14-ga. zinc coated galvanized steel.
Exterior is 16-ga. steel. Powder coated cool gray finish.
Electrical requirements 115V, 60 Hz, 1 phase
208V, 60 Hz, 1 phase
230V, 60 Hz, 1 phase
220V, 50 Hz, 1 phase
220V, 60 Hz, 1 phase
Optional accessories Chart recorder, CO2 and LN2 back-up system, Racks, Cold safety gloves


UNIQUE SPECIFICATIONS OF VERTICAL (UPRIGHT STYLE) MODELS

Model Capacity Rack Capacity Shelving Temp. Range Internal Dimensions External Dimensions
ULF401U 370L / 13 cu. ft. 15 4 adjustable
(5 compartments)		 -40ºC to -85ºC 20” x 22” x 51.25
50 x 55 x 130 cm		 35" x 34.5" x 79.5"
88 x 87 x 201 cm
ULF501U 505L / 18 cu. ft. 20 4 adjustable
(5 compartments)		 -40ºC to -85ºC 23” x 26” x 51.25”
58 x 66 x 130		 40" x 36" x 79.5"
101 x 91 x 201 cm
ULF601U 626L / 22 cu. ft. 25 4 adjustable
(5 compartments)		 -40ºC to -85ºC 28.5” x 26” x 51.25”
72 x 66 x 130 cm		 43" x 37" x 79.5"
109 x 93 x 201 cm
ULF701U 710L / 25 cu. ft. 30 4 adjustable
(5 compartments)		 -40ºC to -85ºC 34” x 25” x 51.25”
86 x 63 x 130 cm		 50" x 37" x 79.5"
127 x 93 x 201 cm
ULF801U 792L / 28 cu. ft. 30 4 adjustable
(5 compartments)		 -40ºC to -80ºC 38” x 25” x 51.25”
96 x 63 x 130 cm		 54" x 37" x 79.5"
137 x 93 x 201 cm
ULF901U 877L / 31 cu. ft. 35 4 fixed
(5 compartments)		 -40ºC to -80ºC 42” x 25” x 51.25”
106 x 63 x 130		 60.5" x 37" x 79.5"
153 x 93 x 201 cm

 

Downloads

Yamato ULF Platinum Series Ultra Low Freezer info

Yamato Freezer and Refrigerator Buyer's Guide

Yamato Return Notes
  • Yamato Parts: 15-day return limit from date of purchase
  • Yamato Equipment Returns: Approved on a case-by-case basis - please contact us to discuss your specific situation
  • For all return inquiries, please contact our customer service team
Shipping

Shipping is free on all orders within the continental United States. We believe in keeping things simple, with no hidden fees or unexpected charges.

How We Fulfill Orders

Lab Stock Direct partners directly with manufacturers to fulfill your orders. When you place an order, we coordinate with our manufacturing partners to ensure your laboratory equipment is shipped efficiently and safely from their facilities.

Order Confirmation

Once your order is placed, you will receive a confirmation email. This means your order has been received in our system and your payment method has been pre-authorized. We then confirm the item is in stock with our manufacturing partners and available for shipment.

If an item is backordered or unavailable, the authorization will be voided, and we will contact you to discuss alternatives.

If the item is in stock, your order will be processed and prepared for shipment. Most in-stock orders ship within 3–5 business days from our manufacturing partner facilities.

Processing and Delivery Times

Standard Items: 3-5 business days processing time, with delivery typically taking 4-12 business days after shipment.

Built-to-Order Items: Some specialized laboratory equipment is manufactured upon order and will require additional processing time. We will notify you of extended timeframes before confirming your order.

Expedited Shipping: Faster delivery may be available upon request for an additional fee. Contact us at info@labstockdirect.com to inquire about expedited options.

Order Shipment

Your products will ship directly from our manufacturing partner facilities. As soon as your order leaves the warehouse, you will receive a shipping confirmation email with tracking information. If you do not receive this within four business days of your order, please contact us at info@labstockdirect.com.

Multiple Item Orders

If your order contains multiple items, they may ship from different manufacturing facilities and arrive separately. Each shipment will have its own tracking number provided via email.

International Orders

We are happy to serve international customers. Please note:

  • Products are designed for the U.S. market and typically require 110V or 240V electrical systems.
  • Products are certified to U.S. safety standards and may not be certified for other countries.
  • Shipping rates will be provided upon request before your order is processed.
  • International customers are responsible for any customs duties, taxes, or import fees required by their country.

Damages

Please inspect your order upon delivery. If you notice visible damage, note it when signing for delivery or refuse the shipment. If you accept the package and later find damage, take clear photos of the packaging and product immediately. Send these photos to info@labstockdirect.com and visit our Returns page to begin a claim.

Lab Stock Direct covers return shipping costs for defective, damaged, or incorrect items.

Lab Stock Direct  
A trade name of Peaks to Palms LLC  
16154 E Alaska Pl Unit E  
Aurora, CO 80017  

Phone: 1-800-577-0501  
Email: info@labstockdirect.com  
Business Hours: Mon–Fri 8am–5pm MST  

Established: 2025




Why Buy From Us

Why Research Institutions Choose Lab Stock Direct

Authorized Dealer Network

Direct partnerships with leading manufacturers including Yamato Scientific, Benchmark Scientific, OHAUS, and North Slope Chillers. Every product ships factory-fresh with full manufacturer warranty coverage.

Institutional Expertise

Serving research labs, universities, medical facilities, and production environments nationwide. Our team understands the technical requirements and compliance standards of laboratory operations.

Pre-Purchase Consultation

Uncertain about specifications or configurations? Our lab equipment specialists provide technical guidance to ensure you select the right equipment for your application.

Transparent Pricing & Support

  • Free freight shipping nationwide (continental USA)
  • Bulk and institutional pricing available
  • 7-day price match guarantee
  • 30-day return policy (subject to manufacturer terms)

BBB Accredited Business

Committed to transparency, ethical business practices, and customer satisfaction. View our BBB profile. 

Factory-Direct Fulfillment

Equipment ships directly from manufacturer facilities to ensure authenticity, proper handling, and full warranty eligibility.

Expanding to Serve Your Complete Laboratory Needs

Lab Stock Direct is committed to becoming your comprehensive laboratory equipment partner. We're continuously expanding our manufacturer partnerships and product offerings based on direct feedback from research institutions like yours.

Expanding Product Categories:

  • Environmental monitoring and compliance solutions
  • Backup power systems and UPS solutions for critical equipment
  • Laboratory furniture and workspace infrastructure
  • Specialized analytical instruments
  • Custom equipment configurations

Our Vision: Provide a single, trusted source for all your laboratory equipment needs—from precision instruments to complete facility solutions.

Have specific requirements? Contact our team at 1-800-577-0501 or info@labstockdirect.com. We're actively building partnerships to serve the evolving needs of the research community.

Lab Stock Direct
A trade name of Peaks to Palms LLC
16154 E Alaska Pl Unit E
Aurora, CO 80017

Phone: 1-800-577-0501
Email: info@labstockdirect.com
Business Hours: Mon–Fri 8am–5pm MST

Established: 2025