What is a desiccator used for?
Desiccators are sealable enclosures containing desiccants used for preserving moisture-sensitive items such as cobalt chloride paper for another use. A common use for desiccators is to protect chemicals which are hygroscopic or which react with water from humidity.
What is desiccator cabinet?
A desiccator cabinet provides clean, dry storage to protect your sensitive materials from moisture exposure, ESD damage, and particle contamination.
How does a desiccator cabinet work?
Our desiccators are designed to lower the humidity level, down to 0% RH, inside a cabinet to prevent moisture from damaging the sample being stored. We achieve 0% RH by introducing a desiccant, Nitrogen (N2), into the chamber. Nitrogen serves as an inert gas to replace air where oxidation is not needed.
What is a desiccator plate?
Desiccator Plates are perforated ceramic plates used with 6, 8 or 10in (152, 203 or 254mm) Desiccators to provide support for samples. The plates are sized to each desiccator model and fit at the base of the upper compartment. Plates are stable and chemical resistant, and withstand temperatures to 300°F (149°C).
What is desiccant made of?
Silica gel is a granular, vitreous, porous form of silicon dioxide made synthetically from sodium silicate. Used as a desiccant, it works by a process called adsorption. The water in the air actually absorbs between the tiny passages as the air passes through them.
How do you make a desiccator?
A simple home desiccator can be made from an airtight resealable plastic bag and a hygroscopic drying agent like sodium hydroxide. Simply get a plastic container and fill it up with sodium hydroxide, then place it inside the bag along with a container of the chemical you intend to dry. Seal it up and wait.
Why desiccator is used in gravimetry?
Heated samples and beakers, or weighing dish, are cooled in a desiccator to prevent the sample or beaker from gathering moisture as it cools. The interior of the desiccator is dry due to the desiccant at the bottom and because it is sealed to keep outside, moist air from getting inside.
How is silica gel manufactured?
It is generally prepared by acidification of a solution of a silicate, such as water glass; the resulting silicic acid forms either a rigid mass or a gelatinous precipitate from which soluble materials are removed by washing with water. The water is finally removed by heating, leaving a glassy, granular solid.
Which desiccant is used in desiccator?
WHAT DESICCANT MATERIALS ARE AVAILABLE IN BREATHING DESICCATORS? The most common are molecular sieve, either Type 4A or Type 13X, or silica gel. However, any desiccant material that does not “pack” will work.
Can desiccator be used for drying?
Desiccators are sealed containers that are used for drying samples under atmospheric pressure or vacuum pressure. These can also protect chemicals that are hygroscopic, as well as protect samples from dust and moisture in the air.
Where can I find alternatives to the VWR catalogue?
Alternatives may be available by searching with the VWR Catalogue Number listed above. If you need further assistance, please call VWR Customer Service on 0800 22 33 44. Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed.
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Is this product no longer available from VWR?
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at 1-800-932-5000.
What is a plastic vacuum desiccator used for?
Description: This small plastic vacuum desiccator is ideal for degasing liquids quickly and easily in the laboratory or classroom. Description: Chemical-porcelain desiccator plates are glazed on one side, perforated with 30 mm diameter holes, and supported by three small feet.