NorLake Scientific -20°C Premier Freezer NSPF331WWW

Brand : Norlake

Product Code : SKU 2548F FREEZER

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All products ship from our 30,000 sq. ft. Haverhill, MA warehouse

Norlake Scientific NSPF331WWW Premier -20°C Laboratory Freezer

Some laboratory freezers are built around advanced refrigeration technology, while others earn their reputation through years of dependable service. The Norlake Scientific NSPF331WWW Premier -20°C Laboratory Freezer falls into the latter category, offering a durable, high-capacity storage solution designed for laboratories that require reliable frozen storage every day.

With 33 cubic feet (934 liters) of storage capacity, an adjustable operating temperature range of -10°C to -25°C, and a laboratory-grade refrigeration system, the NSPF331WWW is well suited for storing biological specimens, laboratory reagents, vaccines, pharmaceutical products, quality control materials, and other temperature-sensitive samples. A professionally refurbished unit from American Instrument Exchange provides laboratories with premium laboratory cold storage while significantly reducing equipment acquisition costs.

Norlake Scientific NSPF331WWW Premier -20°C Laboratory Freezer Key Features

33.0 cu. ft. (934 L) storage capacity
Adjustable operating temperature from -10°C to -25°C
Laboratory-grade refrigeration system
Digital microprocessor temperature controller
Automatic defrost operation
Forced-air circulation for excellent temperature uniformity
Audible and visual alarm system
Heavy-duty insulated locking door
Adjustable epoxy-coated storage shelves
Environmentally conscious refrigeration design
Refurbished and performance tested by American Instrument Exchange
90-day warranty included

Norlake Scientific NSPF331WWW Premier -20°C Laboratory Freezer Overview

The Norlake Scientific Premier Series was developed to provide dependable laboratory refrigeration for research, clinical, pharmaceutical, and industrial applications. Built with a heavy-duty insulated cabinet and laboratory-specific temperature controls, the NSPF331WWW delivers reliable frozen storage while standing up to the demands of continuous laboratory use.

Unlike commercial freezers intended for food storage, the Premier Series incorporates digital temperature management, alarm protection, laboratory-grade insulation, and durable cabinet construction that help maintain stable storage conditions for valuable scientific materials. The large upright cabinet also allows laboratories to organize high sample volumes without sacrificing accessibility.

Common Applications

The Norlake NSPF331WWW is commonly used to store laboratory reagents, vaccines, biological specimens, enzymes, antibodies, pharmaceutical products, clinical samples, diagnostic materials, environmental samples, quality control standards, and other laboratory materials requiring dependable storage between -10°C and -25°C.

Its generous storage capacity also makes it an excellent choice for centralized laboratory storage rooms, core research facilities, and laboratories replacing multiple smaller freezers with a single high-capacity storage platform.

Ideal Laboratory Types

The NSPF331WWW is well suited for biotechnology laboratories, pharmaceutical manufacturers, hospital laboratories, clinical laboratories, academic research institutions, environmental testing laboratories, industrial quality control facilities, government research organizations, and public health laboratories.

Laboratories seeking dependable day-to-day frozen storage with generous capacity and long-term durability will benefit from the Premier Series' robust design.

Temperature Recovery & Uniformity

Frequent door openings are unavoidable in busy laboratories, making consistent temperature recovery an important part of protecting valuable samples. The NSPF331WWW utilizes forced-air circulation together with a laboratory-grade refrigeration system to distribute cold air evenly throughout the storage chamber and restore cabinet temperature following normal access.

Automatic defrost operation minimizes frost accumulation and reduces routine maintenance requirements, allowing laboratories to spend less time maintaining equipment and more time supporting research and testing activities.

Typical Stored Materials

The Norlake Scientific NSPF331WWW is commonly used to store:

Vaccines
Biological specimens
Laboratory reagents
Enzymes
Antibodies
Laboratory buffers
Pharmaceutical compounds
Diagnostic reagents
Quality control materials
Environmental testing samples
Clinical specimens

Applications requiring storage below -40°C or long-term preservation at ultralow temperatures should instead utilize an ultralow temperature freezer.

Norlake Scientific NSPF331WWW Premier -20°C Laboratory Freezer Key Specifications

Capacity

33.0 cu. ft. (934 L)

Temperature Range

Adjustable from -10°C to -25°C

Refrigeration System

Laboratory-grade forced-air refrigeration
Digital microprocessor temperature control

Defrost

Automatic

Interior Configuration

Four adjustable epoxy-coated shelves
Heavy-duty insulated locking door

Electrical Requirements

120V, 60 Hz

Dimensions

Exterior: 31.75" W × 36.5" D × 87.6" H
Interior: 28" W × 29.25" D × 66.5" H

Weight

Approximately 375 lbs. shipping weight

Energy Efficiency & Operating Costs

The NSPF331WWW was designed to provide dependable laboratory refrigeration while maintaining efficient day-to-day operation. High-performance cabinet insulation, modern electronic temperature controls, and an efficient refrigeration system help reduce energy consumption while maintaining stable storage temperatures. Automatic defrost further minimizes maintenance requirements, making the freezer well suited for laboratories that require reliable operation with minimal downtime.

Specifications compiled from Norlake Scientific manufacturer literature and American Instrument Exchange product information.

Refurbishment & Testing Process

Every Norlake Scientific NSPF331WWW received by American Instrument Exchange undergoes a comprehensive inspection and performance evaluation before shipment. Our technicians verify refrigeration performance, inspect the compressor and refrigeration system, confirm temperature stability throughout the operating range, test alarms and electronic controls, evaluate door gaskets and cabinet condition, and thoroughly clean the freezer prior to delivery.

Any necessary repairs or replacement components are completed before the freezer is approved for shipment, helping ensure dependable performance when it arrives at your laboratory.

Shipping & Installation Considerations

The Norlake Scientific NSPF331WWW ships by freight from American Instrument Exchange. Before delivery, laboratories should verify doorway clearances, installation space, electrical service, and adequate ventilation around the cabinet. Because of its large storage capacity and height, planning the final installation location in advance will help maximize storage efficiency and ensure convenient day-to-day access.

Liftgate delivery, inside delivery, and other specialized freight services are available when required.

Related Laboratory Equipment

Laboratories purchasing the Norlake Scientific NSPF331WWW frequently also consider laboratory refrigerators, ultralow freezers, cryogenic storage systems, CO₂ incubators, laboratory centrifuges, biosafety cabinets, and laboratory temperature monitoring systems.

Frequently Asked Questions

Is the Norlake NSPF331WWW suitable for biomedical laboratories?

Yes. The NSPF331WWW is designed for laboratory applications and is commonly used in biomedical, pharmaceutical, clinical, research, and industrial laboratories requiring dependable frozen storage.

Does this freezer use automatic or manual defrost?

The NSPF331WWW features an automatic defrost system that helps minimize frost accumulation and reduce routine maintenance while maintaining stable operating temperatures.

What types of materials are typically stored in this freezer?

The freezer is commonly used to store vaccines, laboratory reagents, biological specimens, enzymes, pharmaceutical products, diagnostic materials, and other laboratory samples requiring storage between -10°C and -25°C.

How is the freezer tested before shipment?

Every refurbished Norlake Scientific NSPF331WWW is inspected, cleaned, and performance tested by American Instrument Exchange technicians to verify refrigeration performance, temperature stability, alarm functionality, and overall system operation before shipment.

Testing Procedures for Used and Refurbished Laboratory Freezers

Cold Storage Reliability from American Instrument Exchange

At American Instrument Exchange, every used and refurbished laboratory freezer we offer undergoes a comprehensive multi-point testing protocol to ensure optimal performance, temperature stability, and long-term reliability. Our rigorous testing procedures are designed to meet the demanding standards of biomedical, pharmaceutical, research, and clinical environments—so you can trust your freezer to protect your valuable samples and materials.

Why Testing Refurbished Laboratory Freezers Is Critical

Before any laboratory freezer is placed back into service, it must be carefully tested for:

Consistent temperature control and uniformity across internal zones
Compressor functionality and refrigeration system performance
Seal integrity and insulation efficiency to prevent temperature loss
Electrical safety and alarm system operation

Thorough testing minimizes the risk of temperature excursions, equipment failure, and product loss—especially for temperature-sensitive items like reagents, biological samples, and vaccines.

Our structured testing protocol ensures that all used and refurbished laboratory freezers meet or exceed manufacturer specifications and industry expectations.

Key Testing Procedures for Laboratory Freezers

1. Visual and Structural Inspection

Examine the exterior for dents, corrosion, or physical damage
Check door gaskets, hinges, and latches for wear and functionality
Inspect power cords, control panels, and internal compartments

2. Functional Startup and System Check

Power on the unit to verify startup sequence, control panel functionality, and display readability
Test programmable settings, alarms, and door-open sensors
Ensure proper door closure and sealing performance

3. Temperature Performance and Stability Testing

Test temperature sensors using certified thermometers or probes
Monitor chamber temperature at multiple points over extended run periods
Verify temperature uniformity and accuracy across common lab setpoints (e.g., -20°C, -30°C)

4. Compressor and Refrigeration System Evaluation

Test compressor startup, cycling behavior, and operating noise
Check condenser coils, evaporators, and fans for performance and cleanliness
Inspect for refrigerant leaks or pressure issues that may affect efficiency

5. Electrical Safety and Compliance Verification

Confirm proper grounding and insulation of all electrical components
Conduct safety testing to meet laboratory equipment electrical standards
Verify functionality of alarms for power loss, temperature excursions, and system faults

6. Final Quality Assurance and Runtime Validation

Conduct multi-day test cycle to confirm stable performance under continuous use
Record temperature data, alarm responses, and compressor cycling metrics
Complete final inspection and prepare detailed service documentation

Reliable Cold Storage, Backed by Testing Excellence

Each refurbished laboratory freezer from American Instrument Exchange is tested and certified for cold storage accuracy, safety, and performance. Whether upright, undercounter, flammable-material rated, or specialty-purpose, our lab freezers are restored to meet real-world research and clinical demands.

Trust American Instrument Exchange for dependable, tested, and warrantied laboratory refrigeration—ready to support your lab from day one.

Repair and Refurbishment Protocol for Used Laboratory Freezers
Certified Cold Storage Performance from American Instrument Exchange

At American Instrument Exchange, every used laboratory freezer we offer is subjected to a comprehensive repair and refurbishment protocol. Whether it’s a general-purpose lab freezer, flammable-material grade unit, or undercounter model, our goal is to restore each system to peak performance—ensuring consistent temperature control and reliable operation.

Why Choose a Refurbished Laboratory Freezer from American Instrument Exchange?

• Fully tested for cold storage accuracy and operational safety
• Backed by a warranty
• Cost-effective alternative to new refrigeration equipment
• Sustainably refurbished to reduce environmental impact
• Serviced by expert technicians with decades of laboratory equipment experience

Step-by-Step Refurbishment Protocol

Every laboratory freezer from American Instrument Exchange follows a detailed, multi-stage process to ensure top-tier performance and reliability:

1. Initial Intake & Inspection

• Visual inspection for dents, corrosion, or structural damage
• Mechanical check of door hinges, gaskets, seals, and internal components
• Documentation of missing parts or areas requiring repair or replacement

2. Cleaning and Decontamination

• Internal and external cleaning using non-abrasive cleaners
• Decontamination/cleaning of all surfaces to remove biological or chemical residues
• Thorough cleaning of shelving, drawers, and removable interior parts

3. Mechanical and Electrical Repairs

• Replacement or repair of worn mechanical parts (door latches, seals, hinges, etc.)
• Inspection and restoration of control interfaces, thermostats, sensors, and displays
• Evaluation of wiring, relays, fuses, and power supply components for safety and integrity

4. Refrigeration System and Compressor Evaluation

• Testing of compressor function, condenser coils, and evaporators
• Inspection for refrigerant leaks and pressure performance (if applicable)
• Verification of proper airflow, fan operation, and defrost cycles

5. Temperature Calibration and Performance Testing

• Testing of temperature sensors and control boards
• Verification of temperature stability and uniformity throughout the chamber
• Testing of multiple setpoints (e.g., -20°C to -30°C) over extended operating periods

6. Safety and Compliance Checks

• Inspection of grounding and electrical insulation per lab safety standards
• Testing of alarm systems (if applicable) for temperature excursions or power failure

7. Final Quality Control and Documentation

• Multi-day operational test
• Final cleaning, inspection, and performance validation
• Detailed service report with temperature logs and repair notes

Trust the Experts at American Instrument Exchange

With over 50 years of industry experience, American Instrument Exchange is a leading provider of high-quality refurbished laboratory equipment. Our proven laboratory refrigerator refurbishment protocol ensures consistent, accurate cold storage—so you can safeguard your samples with confidence.

Warranty Information

All used equipment sold by American Instrument Exchange is refurbished/reconditioned, tested to meet specifications, cleaned, and comes with a 90-day warranty from the date of shipment unless otherwise specified. New products include a warranty from the manufacturer. Your warranty is only valid if you have paid your invoice. If your invoice is over 30 days old, warranty work will not be performed until your invoice is paid in full. American Instrument Exchange is not liable for any special or consequential damages that result from the use of, or the inability to use, the materials on this site or the performance of the products,

Exceptions include international sales and items that are agreed to be sold with a lesser warranty or items that are agreed to be sold “as is.”

Should there be visible shipping damage to packaging or concealed shipping damage to item(s) supplied, buyer must communicate such damage to the delivering entity or carrier upon receipt first and to American Instrument the same day item is accepted / signed for. Failure to do so voids warranty. Customer decision to involve / procure third party or OEM service other than American Instrument or AIE assigned vendors to resolve in-warranty instrument failure or defect without first placing a service call to American Instrument voids warranty.

Return & Cancellation Policy

American Instrument Exchange will authorize the return of and issue a full refund for any equipment that is not working as represented and could not be replaced or repaired to the customer’s satisfaction by AIE or a representative of AIE during the warranty period. Returns without prior authorization and an RMA number will not be accepted.

Customers are responsible for proper packaging of the equipment and all included accessories. American Instrument will pay for insurance and shipping costs. Non-inventory items bought specifically to fill customer orders may possibly be returned, but on a case by case basis.

Customers who cancel orders after refurbishing has begun or after delivery where there are no equipment performance issues may be subject to a Restocking/Cancellation Fee of 20% or more and responsible for shipping costs for both the delivery and return.

Ongoing and Extended Support Options

American Instrument Exchange is able to provide additional repair and support services outside the warranty terms for most products that sell.

For biosafety cabinets, clean benches, chemical fume hoods, and other clean air products our team at AIE Laboratory Services can provide certifications, repairs, decontaminations, and other services for customers throughout New England, and guidance and limited technical assistance for any customers in the US and Canada for new or refurbished biosafety cabinets purchased from American Instrument Exchange.

For all other products, the repair service team at American Instrument Exchange can provide both field and depot repair evaluations. We can easily schedule and coordinate the pick-up and transportation of your malfunctioning equipment. By offering hourly rates lower than most OEM service providers and eliminating travel time for technicians, we help reduce repair costs. Furthermore, our lab depot repair service minimizes or eliminates scheduling delays. Our experienced service technicians are qualified to restore your equipment to factory specifications.

Please contact our team at info@americaninstrument.com for more details.

FAQ

Does the equipment come with a warranty?

Yes, all equipment from American Instrument Exchange comes with a warranty.
Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer's specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.

How do you test and recondition the equipment?

Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality.
We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly.

How do products ship from American Instrument Exchange?

We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements.

Return and order cancellation policy

American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer's satisfaction during the warranty period. Customers who cancel orders after refurbishing has begun will be subject to a cancellation and restocking fee of between 20% and 40%.

Are discounts available for educational or non-profit institutions, or for bulk purchases?

Yes – call or email us today with a list of equipment you're looking for and we can potentially put together a quote that includes a discount.

How does your price matching policy work?

We strive to keep our pricing competitive and reasonable. If you find comparable items for sale at a lower price from other vendors please send us a link and or quote for the item and we'll do our best to match or beat the price.

Can I see the equipment in person before committing to a purchase?

Customers are welcome to make an appointment to view equipment in our warehouse. Given our workload we may not be able to test or clean the equipment prior to your arrival if you have not committed to an order.

1023 Western Avenue is a working warehouse, not a showroom, and customers should dress appropriately and wear closed toe shoes.

Can I ship products that I purchased elsewhere to American Instrument for repair?

Yes – please see our repair services page for more information.