75037 Results for: "Silica Flour"

Supplier: ISERA

HPLC column of the ISAspher line guarantee the highest possible reliability in a wide range of applications.

Supplier: ISERA

Ultra-fast separation at moderate pressure with state-of-the-art core shell technology particles in XCORE columns.

Supplier: LGC Standards PROMOCHEM

Silica standard, SiO₂, 1000 mg/l, VHG, Matrix: H₂O, Application: Ion chromatography standards

Supplier: Thermo Fisher Scientific

Silicon(IV) oxide is used in the manufacture of glass for windows, drinking glasses, beverage bottles and many other materials. Optical fibers for telecommunication are made from silica. It is also used as a raw material for many ceramics such as earthenware, stoneware and porcelain. In addition, silica is a common additive in the production of foods and pharmaceutical products.

Supplier: VWR Collection

These TLC glass plates are suitable for easy and quick sample applications.

Supplier: VWR Collection

These HPTLC glass plates use an optimised particle size which results in better separation efficiency.

Supplier: Thermo Fisher Scientific

This TLC high purity grade silica gel with gypsum binder is used for thin layer chromatography plate preparation.

Supplier: MACHEREY-NAGEL

Diol-modified HPTLC silica layers available as glass plate with fluorescent indicator. Recommended for steroids, pesticides and plant constituents;
for critical separations an alternative to silica, since it is less sensitive to the water content of the environment; leads to more reproducible results compared to silica.

Supplier: MACHEREY-NAGEL

Photometric test kit for the determination of silica in water samples.

Supplier: VWR Collection

Modified silica layers are, depending on the modification, suitable for polar to unpolar eluents or eluent mixtures.

Supplier: Merck

TLC plates, unmodified silica gel 60
Merck silica gel 60 has a unique polymeric binder that results in a uniform, hard surface that will not easily crack or blister. This smooth, extremely dense plate coating ensures narrow bands and maximum separation efficiency with the lowest background noise. Layer thickness 250 μm and particle size of 10 to 12 µm. Two inorganic fluorescent indicators for UV detection of colourless substances.

Supplier: MACHEREY-NAGEL

Silica gel adsorbents for column chromatography.

Supplier: TECHNICAL QUARTZ SOLUTIONS

Made of silica.

Supplier: OMEGA BIO-TEK

Solution 3, neutralisation buffer for silica spin column methods

Supplier: Thermo Fisher Scientific

This TLC high purity grade silica gel without binder, with fluorescent indicator is used for thin layer chromatography plate preparation.

Supplier: VWR Collection

Small beads suitable for use with vortex mixers and tube homogenisers.

Supplier: MACHEREY-NAGEL

Unmodified HPTLC silica layers available as glass plates with or without fluorescent indicator. The narrow fractionation of the silica particles features theoretical plate heights, which are one order of magnitude smaller than on standard silica layers. Thus, Nano-ADAMANT has the advantage of sharper separations, shorter developing times, and increased detection sensitivity with equal selectivity.

Supplier: Merck

Coupling TLC plates to mass spectrometry is a new field of high interest, which will contribute strongly to the progress of planar chromatography. The MS-grade plates are much cleaner than standard TLC/HPTLC plates providing higher sensitivity and reduced background signals. This allows trace analysis with mass spectrometry detection in lower nanogram range.

Supplier: UPCHURCH SCIENTIFIC

Made from high quality, polyimide-clad fused silica.

Supplier: Roth Carl

Peptone from soya beans is gained from papainic digestion of soya bean flour. Peptone tryptic digest is produced by proteolytic digestion of casein with trypsin-rich pancreas extract.

Supplier: Bohlender

Silica gel with colour indicator.

Supplier: MERCK PRODUCTION CHEMICALS

Geduran® Si 60, 40 - 63 µm

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: Avantor

Packing materials for low pressure preparative and flash chromatography. Chemically stable from pH 2 to 8,5. They are not damaged by the use of cleaning and antimicrobial agents such as sodium azide, dilute aqueous solutions of trifluoroacetic acid and acetic acid, organic solvents such as methanol and acetonitrile, and concentrated aqueous solutions of salts and urea. The packings feature irregular-shaped particles.

Supplier: VWR Collection

These TLC glass plates have an excellent separation efficiency due to an optimised particle size distribution.

Supplier: Thermo Fisher Scientific

This TLC high purity grade silica gel with gypsum binder and fluorescent indicator is used for thin layer chromatography plate preparation.

Supplier: Hach

Qualitative results using traditional colour comparator disc methods.

Supplier: Thermo Fisher Scientific

This unbonded, highly pure, base-deactivated silica media efficiently separates non polar and moderately polar organic compounds by normal phase chromatography.

Supplier: MACHEREY-NAGEL

These unmodified HPTLC silica layers are available as glass plates with or without fluorescent indicator. The narrow fractionation of the silica particles features sharper separations, shorter developing times, and an increased detection sensitivity compared to DURASIL plates.

Supplier: Merck

RP-2, RP-8 and RP-18 are based on silica gel 60 modified with aliphatic hydrocarbons. The chain length, in combination with the degree of modification, defines the ability to tolerate water in the solvent system and strongly affects retention. Migration time increases in the order RP-2, RP-8 and RP-18 using the same solvent composition. RP-8 and RP-18 can be run with up to 60% water in the solvent system.