Lab Desiccants and Drying Agents
Hygroscopic substances and drying agents for use in laboratory settings; drying agents are commonly used to keep other substances and samples dry, or to prevent moisture from forming on/in containers. Products include drying tubes, kits, etc.
Desiccants are typically chemicals or compounds that are hydroscopic (readily absorb moisture). Common desiccants include clays, silica gels, and calcium sulfate.
In the lab, desiccants are commonly used in desiccators and desiccator cabinets, with in-line air and gas drying columns, in absorption bulbs, U-tubes, glove boxes, sealed chambers, and wherever a dry environment is required. They are also used during transport, for storage, and maintaining materials and products ─ everything from clothing to electronics.
The moisture may come from a variety of sources:
- Water vapor in the air
- Moisture in packaging materials
- Moisture from permeation or leakage
Some desiccants contain an indicator or additive that produces a color change with moisture absorption. The indicator allows the user to see when the desiccant has absorbed its maximum amount of moisture and needs to be replaced or regenerated.
Some desiccants can be reused many times simply by heating them in an oven to allow moisture to evaporate. For indicating desiccants, one can also easily tell when the desiccant is again ready to use by the change back to the original color.
Desiccants may be available in a range of mesh or particle sizes. The Tyler Equivalent is a common type of mesh sizing and indicates the number of openings per linear inch of mesh. Common desiccant mesh sizes are 4, 8, and 10 to 12. Size 4 is typically used in gas phase applications; they are larger and less likely to break. Size 8 is smaller and can be more tightly packed.
Sigma Aldrich Fine Chemicals Biosciences Dextrin corn commerci2.5KG
DEXTRIN Dextrin corn commerci2.5KG
Nanocs SILICA NANOPARTICLES AMINE 1L
Silica nanoparticles, amine functional, 200 nm, 1 mL, Quote 2505301EL
Strem, An Ascensus Company CAS# 63231-67-4. 2kg. Silica gel, 70-200 mesh (TLC). MFCD00011232
CAS# 63231-67-4. 2kg. Silica gel, 70-200 mesh (TLC). MFCD00011232. Molecular Weight: 78.10. Molecular Formula: H2SiO3. Color/form: white pwdr. Strem# 93-1427. http://www.strem.com/catalog/v/93-1427/
MSC Value Collection Desiccant Packets, Silica Gel, 2 oz, 20 Pack
These desiccant packets are designed to absorb moisture and protect sensitive items from humidity. Each packet contains 2 oz. of silica gel, an effective drying agent.
- Made from silica gel
- Each packet is 2 oz.
- Packaged as 20 packets per container
- Manufactured in the United States
WA HAMMOND DRIERITE COMPANY DRIERITE, COMMERCIAL GRADE (NON-INDICATING) 8 MESH 50 LB DRUM, STOCK# 33050
Commercial Drierite is anhydrous calcium sulfate. It is of neutral pH, constant in volume, chemically inert except toward water, insoluble in organic liquids and refrigerants, non-disintegrating, non-wetting, non-toxic, non-corrosive, non-channeling, generally recognized as safe (GRAS) by the FDA, not regulated by OSHA, economical to use, and can be regenerated repeatedly for reuse. Uses include drying organic liquids, polyurethane reactants, gases and solids.
MULTISORB MINIPAX SORBENT PACKET 18000EA
This item has a minimum order quantity of 5 cases per supplier requirements.
Immunochemistry Technology Desiccant Packets 10/pk
Desiccant Pack includes ten silica gel desiccant packets (5gm ea.) used to absorb moisture during immunoassay plate storage. Include a desiccant packet with stored ELISA plates to increase stability and shelf-life.