Description
Thermo Scientific CryoPlus 2 Liquid Nitrogen Freezer
The Thermo Scientific CryoPlus 2 Liquid Nitrogen Freezer provides the perfect combination of liquid nitrogen storage reliability and microprocessor technology. It features a top-mounted control panel allows easy access to the CryoPlus’ microprocessor controller for programming. Two independent, flexible gaskets reduce the migration of moisture into the chamber and reduce icing. 24 tricolor LEDs continuously display actual liquid nitrogen level and high-level/low-level setpoints.
Thermo CryoPlus 2 Liquid Nitrogen Freezer features
- Model 7402
- 200L capacity
- Static holding time: 40 days
- 90-day warranty
Counterbalanced UL 61010 third addition compliant lid with 100% clearance allows each entry into the storage area for retrieval of samples, while minimizing sample exposure time and maintaining a safe work environment, and incorporates foamed-in-place, high density urethane insulation with dedicated vent.
The CryoPlus 2 incorporates a temperature sleeve as a standard feature, which provides colder temperatures at the top and more efficient operation in vapor phase. Vacuum insulated storage tank with stainless steel interior. Exterior cabinet is constructed of 18-gauge, cold roll steel with powder-coat paint for durability and a high-quality uniform finish.
CLICK HERE to see the Thermo Scientific CryoPlus 2 liquid nitrogen freezer on our YouTube channel
Testing
This freezer is used and reconditioned. Our technicians test all equipment to confirm that it operates properly and to the manufacturer’s specifications. While we can’t test for a specific analytical application we will do our best to simulate the conditions under which the equipment will be run.
If you have particular testing requirements or requests, please let us know and we’ll work with you to make sure these requirements are addressed during testing.
Pictures
The photos above are representative. The equipment shown is currently in storage in our warehouse. In addition to testing each machine we will clean all the equipment thoroughly prior to shipment.
We often have multiple units of each model in stock and sometimes we’re unable to feature photos of every single unit. At your request, we can provide photos of the equipment in your order after testing and cleaning.
Thermo CryoPlus 2 Liquid Nitrogen Freezer – Specifications
| Exterior dimensions | 28.5”W x 34.0”D x 41.0”H (with closed lid) |
| Interior dimensions | 24” dia. x 27.5”H |
| Static evaporation rate | 5 days |
| Static holding time | 40 days |
| Weight | 325 lbs |
| Electrical requirements | 100 – 120V, 50/60 Hz |
For inquiries about the Thermo Scientific CryoPlus 2 Liquid Nitrogen Freezer, please give us a call at 978-521-2221, or fill out the form on this page.
hermo Scientific CryoPlus 2 frequently asked questions
What is the Thermo CryoPlus 2 used for?
The Thermo CryoPlus 2 is a liquid nitrogen (LN₂) cryogenic storage system designed for long-term preservation of biological samples at ultra-low temperatures. It is commonly used in research laboratories, biobanks, clinical labs, and pharmaceutical facilities to store materials such as cell cultures, stem cells, tissue samples, and DNA libraries.
The system uses liquid nitrogen to maintain extremely cold conditions in either liquid phase or vapor phase storage, helping preserve biological integrity for extended periods.
How does the CryoPlus 2 maintain ultra-low temperatures?
The system maintains cryogenic temperatures using liquid nitrogen stored inside a vacuum-insulated stainless-steel chamber. The LN₂ gradually evaporates, keeping the internal environment extremely cold.
The CryoPlus series includes microprocessor-controlled autofill capability, which automatically replenishes liquid nitrogen from a supply tank when levels drop below preset thresholds.
This automated refill system helps maintain consistent storage temperatures while reducing manual maintenance.
What types of samples are typically stored in the CryoPlus 2?
The CryoPlus 2 is commonly used to store a wide variety of cryogenically preserved materials, including:
- Mammalian and bacterial cell lines
- Stem cells and primary cells
- Tissue samples and biopsies
- Blood and serum samples
- DNA, RNA, and other biological reagents
Cryogenic storage systems like the CryoPlus 2 are especially important for long-term sample preservation in biobanking and molecular biology research.
What advantages do the CryoPlus 2 and other autofill systems offer compared with manual LN₂ storage tanks?
Compared with traditional manual-fill cryogenic tanks, the CryoPlus 2 provides several operational advantages:
- Automated liquid nitrogen refill system
- Continuous electronic monitoring of temperature and nitrogen levels
- Remote alarm capability for lab safety
- Large, organized storage capacity with rack systems
- Improved workflow for high-volume sample storage
These features make the CryoPlus series suitable for laboratories that require reliable long-term cryogenic storage with minimal manual intervention.
What is the difference between liquid phase and vapor phase cryogenic storage?
Cryogenic storage systems can store samples in either liquid nitrogen (liquid phase) or nitrogen vapor (vapor phase).
Liquid phase storage
- Samples are immersed directly in liquid nitrogen
- Provides the lowest possible temperature (-196 °C)
Vapor phase storage
- Samples are stored above the liquid nitrogen surface
- Maintains temperatures typically below -150 °C
- Reduces risk of cross-contamination between samples
Many laboratories prefer vapor-phase storage for clinical samples and biobanking applications.
What is LN₂ evaporation rate in cryogenic storage tanks?
Evaporation rate refers to how quickly liquid nitrogen naturally boils off from a storage vessel.
Typical evaporation rates range from 2 to 10 liters per day depending on:
- Tank size and insulation quality
- Ambient laboratory temperature
- Frequency of lid openings
- Amount of stored material
Lower evaporation rates indicate more efficient cryogenic insulation.
Can LN₂ storage tanks be connected to remote monitoring systems?
Many modern cryogenic storage systems include remote alarm contacts and monitoring capabilities.
These features allow laboratories to:
- Monitor temperature and nitrogen levels remotely
- Receive alerts for low nitrogen levels or system issues
- Integrate with facility monitoring systems
Remote monitoring helps protect valuable biological samples.
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