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.
Perkin Elmer US LLC Reusable Dessicant Kit - Qty. 4
FT-IR spectrometers require dessicant kits to keep their optical paths moisture-free. PerkinElmer recommends that your instrument's desiccant be replaced every six months. Your spectrometer's manual has instructions on how to install the dessicant. Depending on the spectrometer, you will need two to three dessicant kits every six months.
MULTISORB 2 GRAM SILICA MINI PKS 3600/case
This item has a minimum order quantity of 12 cases per supplier requirements.
2 GRAM SILICA MINI PKS 3600/case
Sorbent Technologies Inc Silica Gel Desiccant Spheres w/100% Blue Indicator, 1-3mm 1kg
Silica Gel Desiccant Spheres with 100% blue indicator are non-corrosive, non-toxic, and chemically inert. The desiccant spheres have particle distribution of 1-3mm and a quantity of 1kg. It is a highly porous form of silica, with an extremely large internal surface area and an affinity towards water and other polar compounds. It will not change its size or shape. Even when the silica gel is water saturated, it remains free-flowing. The spheres with blue indicator (cobalt chloride) turn pink upon reaching moisture capacity.
LUKNOVA INC High Purity Silica Gel, Particle Size 40-63 µm (230-400 Mesh), Pore Size 60 Å, Ph Range 6.8-7.2. This Unit Comes At 500 Gram Per Bottle. Standard Silica Gel Has Irregular Shape And Great For Chromatography Application.
High Purity Silica Gel, Particle Size 40-63 µm (230-400 Mesh), Pore Size 60 Å, Pore Volume 0.75 Ml/G, Surface Area 500M2/G, Ph Range 6.8-7.2. This Unit Comes At 500 Gram Per Plastic Bottle. This Standard Silica Gel Has Irregular Shape And Free-Flowing Fine Powder Form And Great For Flash Chromatography Application With Sample Loading Up To 10-Wt%. It Has Narrow Particle Size Distribution And Narrow Ph Range Which Enable Significant Advantages In Purification Efficiency, Resolution, And Column Reproducibility. Cas Number 112926-00-8.
Hach Company Silica Gel Desiccant with Indicator, 454 g
Silica Gel with Indicator for use as desiccating agent. Drying agent. 454 g bottle.
Electron Microscopy Sciences DriBox Reusable Desiccant Canister
The DriBox is a 2" x 2" x 1" dehydrating cartridge that will remove moisture and prevent corrosion in a 3 cu. ft. sealed container. The dark blue Desiccant will turn pink over time, indicating that it is ready to be regenerated. This is a popular item to use in a safe or other sealed container where moisture is a concern. This can be regenerated in a microwave for a few seconds at a time until the beads become dark blue again. An oven can also be used at 225 degrees for 3-4 hours or until the beads are once again dark blue.
Sigma Aldrich Fine Chemicals Biosciences Florisil(R) 100-200 mesh | 1343-88-0 | MFCD00078249 | 1KG
Florisil(R) 100-200 mesh | Mol Wt: 100.39 | 1343-88-0 | MFCD00078249 | 1KG