Glass exsiccators and accessories

Application of glass desiccators in the laboratory

Glass desiccators are key laboratory tools for protecting samples from moisture and drying them efficiently. They are essential for safely cooling materials taken out of dryers, resulting  in the stable weight needed for precise weight analysis.

Standard and vacuum models are used in laboratories. Made of borosilicate glass (Duran or Simax type) guarantees the highest chemical resistance and durability of the equipment even in demanding working conditions.

• protection against environmental moisture,
• stabilization of the weight of samples for analysis,
• possibility of operation in vacuum conditions,
• high resistance to reagents,
• tightness thanks to ground edges,
• Wide selection of diameters up to 395 mm.

Porcelain inserts and absorbents such as silica gel are used inside the vessel. When choosing the right model, you should take into account the dimensions of the laboratory glassware used and the amount of material to be dried.

Vacuum and standard desiccators without a tube

The selection of the right laboratory equipment depends primarily on the required moisture removal rate. The tubeless variants, equipped with a sealed lid with a comfortable handle, are perfect for passive sample storage. If maximum efficiency is a priority, it is worth choosing a vacuum desiccator, which allows you to connect a vacuum pump thanks to a special connector.

The vacuum created inside  instantly draws out moisture and facilitates the evaporation of solvents under controlled conditions. Our range ensures optimal performance by offering the following benefits:

• drying process at a reduced temperature,
• effective protection of heat-sensitive substances,
• solid wall construction protecting against implosion,
• special orange versions that block UV radiation,
• functional glass bells and laboratory cabinets.

The use of orange glass is crucial for materials that require protection from light. The entire offer, including laboratory cabinets, allows for professional organization of space and fully safe storage  of all chemical reagents in a professional research environment.

Duran and Simax borosilicate glass

In a professional laboratory environment, desiccators made of borosilicate 3.3 glass are standard. This material, used by renowned brands such as Duran and Simax, guarantees the highest thermal resistance. The clear design of the vessels allows for ongoing monitoring of the preparations, which is essential during long-term drying processes.  The Wertex  brand, on the other hand, offers modern models made of polycarbonate and polypropylene, which are light and almost indestructible, which significantly increases work safety.

The choice between glass and plastic depends on the specifics of the research, but professional solutions provide a number of key benefits:

• high resistance to rapid temperature changes,
• precise grinding to guarantee excellent tightness,
• full transparency to facilitate sample inspection,
• exceptional mechanical durability of polymer models,
• resistance to aggressive chemicals.

Porcelain inserts and desiccants

The porcelain insert plays a key role in the drying sets, effectively separating the samples from the desiccant and providing them with a stable substrate. Thanks to a special perforated surface, air circulates freely inside the chamber, which significantly speeds up the drying process. In modern laboratories, polypropylene cartridges are an excellent alternative to ceramics, which are characterized by exceptional resistance to aggressive chemicals.

The efficiency of work in the laboratory is ensured by the following elements:

• silica gel with a coloured indicator,
• sodium hydroxide for advanced analyses,
• tight grinding to protect the mass of the substance,
• precise adjustment of the cartridge diameter,
• Durable porcelain or polypropylene construction.

A desiccant is placed directly under the cartridge, the condition of which can be monitored by visual indicators. The sealed cuts  of the lid protect the samples from fluctuations in humidity, and the perfect fit of all components guarantees full stability and comfort during daily testing tasks.

Sealing accessories and vacuum valves

The basis for reliable tightness are precisely ground flanges, which guarantee the stability of the entire system. A modern approach is increasingly replacing traditional vacuum grease with heavy-duty silicone seals. This eliminates the risk of contamination of the samples and makes it effortless to open the vessel after the work is done.

The vacuum control system is designed for maximum precision and safety, as evidenced by the following features:

• durable GL 32 threads made of chemical-resistant PTFE,
• classic 24/29 cuts available in the Novus variant,
• precise needle valves for full control,
• extremely smooth pressure regulation to prevent turbulence,
• safe maintenance of fine bulk substances in place.

Thanks to these solutions, working with vacuum becomes more predictable, and the risk of accidental spillage of preparations is reduced to a minimum, which guarantees the highest quality of analyses.

Selection of diameter and parameters of the desiccator

Choosing the right vessel size is crucial for the efficiency of laboratory work. In professional applications, diameters from 90 to 392 mm are used, with the DN 300 being considered standard due to its exceptional spaciousness. Equally important are monitoring systems such as pressure gauges in vacuum versions or thermohygrometers in dehumidification cabinets, which keep track of the conditions inside the device.

The precise fit of these components provides the user with a number of benefits:

• optimal use of the capacity of the vessel,
• convenient arrangement of crucibles and beakers,
• guarantee of perfect tightness of the system,
• forcing proper air circulation,
• effective isolation of samples from harmful moisture,
• significant improvement of research processes .