25L Ultra Low Temperature Freezer Donpemu Countertop Lab Dual Door

Description

Product Overview

The Donpemu 25L Ultra Low Temperature Freezer is engineered to meet the demanding requirements of modern scientific laboratories, medical facilities, and research institutions. Built with a galvanized steel body and a copper tube evaporator, the unit delivers a stable -86°C (-123°F) environment that preserves the integrity of biological specimens, chemical reagents, and other temperature‑sensitive materials. The compact countertop footprint—measuring just 30 x 16 x 20 inches—allows the freezer to fit comfortably on standard lab benches while still providing a generous 25‑liter capacity. Dual‑door gaskets and high‑density insulation minimize thermal loss, ensuring consistent temperature control even during frequent door openings. A microcomputer system drives an LED digital display that shows temperature to a precision of 0.1°C, and customizable alarms provide both audible and visual alerts if the setpoint deviates. The unit operates on 110 V power but includes a built‑in transformer that supports 220 V, making it adaptable for international labs. Manual defrost and a self‑locking lid further enhance safety, while the compressor protection program automatically shuts down the unit in the event of overheating. All components are designed for durability and ease of maintenance, delivering reliable performance for years of continuous operation.

Usage

Designed for versatility, this freezer excels in a wide range of applications. In biomedical research labs, it provides the ultra‑low temperatures required for long‑term storage of cell lines, DNA samples, and cryopreserved tissues. Clinical laboratories benefit from its rapid cooling capabilities when handling reagents that must remain stable at sub‑zero temperatures. Chemical analysis facilities use the freezer to store volatile compounds that could degrade if exposed to higher temperatures. The countertop design enables easy relocation for fieldwork, allowing researchers to bring the freezer to remote sites or temporary setups without sacrificing performance. Its lightweight construction—approximately 60 lb (27.5 kg)—combined with a sturdy handle makes transport straightforward. The included accessories, such as insulated gloves and a snow shovel, simplify frost management during routine maintenance. Because the unit features a manual defrost system, technicians can control the defrost cycle to align with laboratory schedules, minimizing disruption. The safety lock prevents accidental opening, protecting both samples and personnel. Overall, the freezer’s user‑friendly interface and robust construction make it an ideal choice for any environment where precise, ultra‑low temperature control is essential.

Why Choose Us

When selecting a laboratory freezer, reliability, precision, and durability are non‑negotiable. Donpemu’s commitment to quality is reflected in every component of this ultra‑low temperature unit. The stainless‑steel exterior resists corrosion and wear, while the internal copper evaporator ensures efficient heat exchange for rapid temperature attainment. Our microcomputer control system undergoes rigorous calibration to guarantee temperature accuracy within ±0.1°C, a critical factor for experiments that depend on exact thermal conditions. The dual‑door configuration not only provides convenient access but also reduces thermal shock during sample retrieval, preserving sample viability. Safety features such as the self‑locking lid and compressor protection program are engineered to prevent equipment damage and protect laboratory staff. Additionally, Donpemu offers comprehensive after‑sales support, including a one‑year warranty, technical assistance, and access to replacement parts. Our global service network ensures that any issues are addressed promptly, minimizing downtime. By choosing Donpemu, laboratories gain a trusted partner that prioritizes scientific integrity and operational efficiency.

Key Features

• Ultra‑low temperature capability of -86°C ensures optimal preservation of sensitive samples.
• Dual‑door design with high‑density insulation reduces thermal loss and protects sample integrity.
• LED digital display with 0.1°C accuracy provides precise monitoring and easy temperature adjustments.
• Durable galvanized steel body and copper tube evaporator deliver long‑lasting performance in demanding lab environments.
• Comprehensive customer support, including warranty and technical service, guarantees reliable after‑sales assistance.

FAQ

What is the maximum temperature range of this freezer?

The unit is designed to maintain temperatures as low as -86°C (-123°F) and can be set up to a maximum of -20°C, covering the typical range required for most laboratory and medical applications.

Can the freezer operate on both 110 V and 220 V power sources?

Yes. The freezer includes an internal transformer that automatically adapts to either 110 V or 220 V input, making it suitable for use in laboratories worldwide without the need for external converters.

How often should the manual defrost be performed?

Defrost frequency depends on usage intensity and ambient humidity. For most laboratory environments, performing a manual defrost every 30‑45 days maintains optimal performance and prevents excessive frost buildup.

Is there a warranty or service plan available?

Donpemu provides a standard one‑year limited warranty covering parts and labor. Extended service plans and on‑site support can be arranged through our authorized service partners for added peace of mind.

What accessories are included with the freezer?

Each unit ships with a transformer compatible with 110 V/220 V, insulated gloves for safe handling of frozen items, and a snow shovel to assist with frost removal during manual defrost cycles.