Liquid Nitrogen Container Bonvoisin 3L Dewar with 6 Canisters

Description

Product Overview

The Bonvoisin 3L liquid nitrogen Dewar is engineered for demanding cryogenic applications where reliability and durability are paramount. Constructed from aerospace‑grade aluminum alloy, the vessel offers a high strength‑to‑weight ratio, resisting dents and deformation while maintaining a lightweight profile for easy transport. Inside, a sophisticated vacuum‑insulated chamber is surrounded by multiple layers of reflective insulation and a gas‑adsorbent material that together create a near‑perfect vacuum, dramatically reducing heat transfer and extending the hold time of liquid nitrogen. The Dewar comes equipped with six stainless‑steel canisters: one solid‑bottom canister for precise nitrogen draw and five perforated canisters designed to hold vials, ampoules, or other small samples securely. The canisters are fabricated from corrosion‑resistant stainless steel, ensuring long‑term chemical compatibility with liquid nitrogen and biological specimens. A rugged, padded carry bag is included, featuring reinforced handles and a detachable shoulder strap for effortless mobility in laboratory, field, or clinical environments.

Usage

Designed for a broad spectrum of scientific and medical settings, this Dewar excels in preserving semen, embryos, stem cells, and other sensitive biological materials that require ultra‑low temperatures. In assisted reproductive technology (ART) clinics, the solid‑bottom canister allows technicians to withdraw a controlled amount of liquid nitrogen without disturbing the stored samples, while the perforated canisters hold cryovials in a stable, upright position. The container is equally suitable for research laboratories conducting cryopreservation experiments, as well as for field biologists who need a portable solution for transporting specimens to remote locations. Its robust insulation makes it an excellent choice for storing dry ice or for short‑term cooling of reagents during fieldwork. The Dewar’s compact 3‑liter capacity fits comfortably on standard laboratory benches, yet its design accommodates a full day of nitrogen boil‑off without the need for frequent refilling, reducing operational interruptions and conserving valuable cryogen.

Why Choose Us

Bonvoisin’s reputation for precision engineering and quality control underpins every aspect of this Dewar. Each unit undergoes rigorous leak testing and vacuum verification to ensure that performance meets or exceeds industry standards. The aluminum alloy body is machined to exact tolerances, guaranteeing a seamless fit between the outer shell and the inner vacuum chamber, which eliminates thermal bridges that could compromise temperature stability. Our stainless‑steel canisters are polished to a mirror finish, minimizing nucleation sites for ice formation and simplifying cleaning procedures. In addition, the included carry bag is crafted from water‑resistant, abrasion‑proof fabric, extending the product’s lifespan even under harsh handling conditions. Customers benefit from a comprehensive warranty covering material defects and a responsive technical support team that provides guidance on optimal nitrogen management, sample handling, and maintenance best practices. By choosing Bonvoisin, laboratories gain a trusted partner committed to advancing cryogenic technology and supporting scientific breakthroughs.

Key Features

• High‑strength aerospace aluminum alloy body for lightweight durability.
• Six stainless‑steel canisters (one solid, five perforated) for versatile sample storage.
• Multi‑layer vacuum insulation with gas‑adsorbent coating to maximize nitrogen hold time.
• Portable padded carry bag with reinforced handles and detachable shoulder strap.
• Comprehensive warranty and dedicated after‑sales technical support.

FAQ

How long can the Dewar keep liquid nitrogen without refilling?

Under typical laboratory conditions, the 3 L Dewar maintains liquid nitrogen for up to 24 hours before boil‑off reaches a level that requires topping up. Extended hold times are achievable by minimizing opening frequency and keeping the Dewar in a stable, insulated environment.

Can the canisters be used for substances other than liquid nitrogen?

Yes. The stainless‑steel canisters are chemically inert and can safely hold dry ice, cryogenic gases, or other low‑temperature media, provided they are compatible with the material and used within the Dewar’s temperature range.

Is the Dewar compatible with standard cryovial sizes?

The perforated canisters are designed to accommodate common cryovial dimensions (e.g., 1.8 mL, 2.0 mL, and 5.0 mL). For larger or custom containers, the solid‑bottom canister can be used as a flexible storage space.

What maintenance is required to keep the Dewar performing optimally?

Regularly inspect the outer shell for dents, clean the canisters with a mild detergent and distilled water, and verify the vacuum integrity annually. Re‑evacuating the chamber is recommended if boil‑off rates increase significantly.

Does the carry bag provide any thermal protection?

While the bag primarily offers physical protection and ease of transport, its insulated lining adds a modest layer of thermal resistance, helping to reduce external heat gain during short‑term handling.