Jeiotech VDC-21U Cubic UV Vacuum Desiccator – 23 L with Integrated Vacuum Gauge

The Jeiotech VDC-21U combines vacuum drying capability with UV protection in a medium-capacity cubic chamber. With a 23-liter internal volume, it supports multi-level sample organization while protecting light-sensitive compounds from photodegradation.

The chamber is constructed from UV-blocking polycarbonate, reducing UV exposure during storage and drying procedures. Vacuum performance is maintained down to 1 Torr (1.33 × 10⁻⁴ MPa) for more than 72 hours at room temperature.

UV-Blocking Construction for Light-Sensitive Applications

Unlike clear VDC models, the VDC-21U uses UV-resistant polycarbonate material that:

• Reduces UV light transmission

• Protects photosensitive chemicals and pharmaceuticals

• Minimizes degradation under laboratory lighting

• Maintains structural strength and vacuum integrity

This makes it particularly suitable for laboratories working with compounds sensitive to UV exposure.

Cubic Design – Optimized Internal Space

The cubic geometry provides:

• Three perforated shelves standard (expandable to five)

• Improved vertical sample organization

• Higher usable volume compared to round models

• Stackable construction for laboratory space optimization

• Front-opening access door for easy operation

Compared to round vacuum desiccators, the cubic VDC-21U offers greater internal efficiency and improved sample organization.

Integrated Vacuum Gauge and Reliable Sealing

All VDC models include a built-in vacuum gauge as standard.

The VDC-21U features:

• Integrated vacuum gauge (0 to −0.1 MPa)

• Viton® 3-way stopcock valve for vacuum and gas substitution

• Pore plug for controlled pressure equalization

• Silicone gasket ensuring airtight, greaseless sealing

• One-piece molded polycarbonate chamber minimizing leakage

These features ensure stable vacuum performance and long-term reliability.

Typical Applications

The VDC-21U is ideal for:

• Storage of UV-sensitive pharmaceutical compounds

• Protection of light-sensitive analytical standards

• Moisture-sensitive and photosensitive chemical materials

• Degassing procedures requiring light protection

• Controlled vacuum drying of reactive substances

Its 23 L capacity supports medium-scale laboratory workflows.