Supplier: VWR Chemicals

Perlite is a material that looks like granules or powder and is white in colour. It is a volcanic silica sand containing water that is industrially expanded by heat treatment (1200°C). It is composed of silica, alumina, iron oxide, titanium oxide, lime, magnesia, sodium oxide and potassium. It has a very high water retention capacity (4-5 times its weight) and is pH neutral (pH 7 to 7,2).

Supplier: Merck

Silicon dioxide (Silica, vitreous), granule, Patinal® 1-4 mm

Supplier: Merck

Silicon dioxide (Silica, vitreous), acid-washed, Sigma-Aldrich®

Supplier: Honeywell Chemicals

Synonyms: Sand; white quartz; quartz; silicon dioxide.

Supplier: MP Biomedicals

MP EcoChrom™ SILICA is used as a suspending and thickening agent in pharmaceutical.A silica-based aerogel was used in the Stardust spacecraft to collect extraterrestrial particles. Silica is also used in the extraction of DNA and RNA due to its ability to bind to the nucleic acids under the presence of chaotropes. As hydrophobic silica it is used as a defoamer component. In hydrated form, it is used in toothpaste as a hard abrasive to remove tooth plaque. SiO2 has a number of distinct crystalline forms (polymorphs) in addition to amorphous forms. In the majority of silicates, the Si atom shows tetrahedral coordination, with 4 oxygen atoms surrounding a central Si atom.

MP EcoChrom™ Silica, the chemical compound silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with the chemical formula SiO2 with a mean pore size of 60Å and particles size of 200-500μm. MP silica are free of particles outside the standard range. The irregular shape of MP Silica permits the easy packing of column permeability and plate number. They allow easy switching from one sieve cut to another, offering an easy way to change the chromatographic methods. It has been known for its hardness since ancient times. Silica is most commonly found in nature as sand or quartz, as well as in the cell walls of diatoms.

Supplier: OMEGA BIO-TEK

Souprava pro izolaci DNA z půdy, E.Z.N.A.® soil DNA kit, byl vytvořen pro izolaci vysoce čisté buněčné DNA ze vzorků půdy, které obvykle obsahují kyselinu huminovou a inhibitory PCR. Pomocí této soupravy lze také izolovat DNA z bakterií, u kterých se těžko provádi lyze, a z řas, které se nacházejí v řadě půdních vzorků jako je jíl, písek, rašelina nebo křída. Izolovanou DNA lze použít k většině následných aplikací včetně PCR, southern blottingu a analýzy SNP.

Supplier: MACHEREY-NAGEL

These low pressure flash chromatography columns and kits are suitable for the separation of compounds up to gram levels.

Supplier: Industrial Physics

The oscillating abrasion tester is used to measure the resistance of a material to surface abrasion and scratching. Its primary application is for transparent materials and coatings in lenses and windows. However it can also be used to evaluate materials such as organic coatings, plastics, metals and more.