105947 Results for: "8-Methylquinoline&pageNo=25&view=list"

Poly-lysine is a polycation which binds to DNA, red cell membrane and any negatively charged protein. When adsorbed to the culture surface, poly-lysine increases the number of positively charged sites available for cell binding. A compromise between the easier to use lower molecular weight products and the extremely viscous higher molecular weights would be the products in the range of 70,000-150,000.
It is typically used as a coating substrate for culture dishes, slides, etc. It enhances electrostatic interaction between negatively charged ions of the cell membrane and the culture surface. Both the D- and L- form of the poly-lysine can be used as a coating substrate since poly-lysine is a nonspecific attachment factor for cells; however, certain cells can digest poly-lysine. In this case, poly-D-lysine should be used as the attachment factor so that the cells are not disrupted by excessive uptake of L-lysine.
Other uses for poly-lysine have been reported as well:
• Conjugation to methotrexate for increased drug transport.
• Microencapsulation of islets.
• Use in simple reproducible procedure for chromosomal preparations from a variety of tissues.
• Immobilation of living cells in biocompatible semipermeable microcapsules.
• In the preparation of polycationic beads.
• Conjugation to albumin and horseradish peroxidase to enhance cellular uptake.
Poly-D-lysine hydrobromide is a synthetic amino acid that enhances cell adhesion to solid substrates. It has additionally been shown to eliminate prion proteins from infected cells.

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Syringeless filters, Mini-UniPrep™, Whatman™

Supplier: Whatman products (Cytiva)

The Whatman Mini-UniPrep Syringeless Filters combine four products into one syringeless filter solution for efficient chromatography sample preparation for a broad range of applications. They are built for fast and easy high performance liquid chromatography/ultra high performance liquid chromatography sample preparation and analysis.

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Ammonium iron(III) sulphate dodecahydrate 99% ACS

Supplier: Thermo Fisher Scientific

Ammonium iron(III) sulphate dodecahydrate 99% ACS

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VENT-CAP wash bottle caps, PP, GL 25coloured red, with median tube, PP 1 * 12 items

Supplier: VITLAB

VENT-CAP wash bottle caps, PP, GL 25coloured red, with median tube, PP 1 * 12 items

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GLOVE DEEP BLUE WINTER GAUGE 13 S.7 1 * 1 PAIR

Supplier: HONEYWELL SAFETY

GLOVE DEEP BLUE WINTER GAUGE 13 S.7 1 * 1 PAIR

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Tubing threaded 56x130x2.5mm gl60 with screw threaded, straight,acc. to din 12216, with iso screw thread,made of borosilicate glass , available with screw thread gl, rd or svl null

Supplier: witeg Labortechnik

Tubing threaded 56x130x2.5mm gl60 with screw threaded, straight,acc. to din 12216, with iso screw thread,made of borosilicate glass , available with screw thread gl, rd or svl null

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Flask for collecting nitrogen 25ml, 120x32mm, st14/23,acc. to schlenk, null

Supplier: witeg Labortechnik

Flask for collecting nitrogen 25ml, 120x32mm, st14/23,acc. to schlenk, null

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Mouse Activated Protein C ELISA Kit

Supplier: Antibodies.com

Mouse Activated Protein C ELISA Kit is a sandwich Enzyme-Linked Immunosorbent Assay (sELISA) designed for the in vitro quantitative determination of mouse Activated Protein C in serum, plasma, tissue homogenates, and other biological fluids.

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Trousers, PW3, T602 Urban Work Holster

Supplier: Portwest

Rugged trouser made from durable Kingsmill polyester/cotton 300 g fabric with a modern fit and adjustable leg length. Pockets have oxford reinforcement for extra durability.

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4-Nitrophenyl phosphate disodium salt hexahydrate (pNPP) ≥99.0% for enzyme immunoassay, Sigma-Aldrich®

Supplier: Merck

Chromogenic substrate for the determination of acid and alkaline phosphatases.

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Silicon dioxide 200-500 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.

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Taurocholic acid sodium salt ≥97%, powder, Practical grade

Supplier: MP Biomedicals

Applications
Taurocholic Acid Sodium Salt is an anionic detergent used for protein solubilization.
Product Description
Taurocholic Acid Sodium Salt is the conjugation product of cholic acid with taurine and the principal constituent of the bile of carnivorous animals.
Biochem/physiol Actions
Non-sulfated bile salt, physiological transport substrate for the bile salt export pump/sister of Pgp (BSEP/spgp), Na(+)/taurocholate cotransporter (NTCP) and MRP3 into the hepatic carnalicular.

Melting Point: 230 °C (decomposes)(Lit.)
Presentation: White Powder
Format: Powder
pH: 6 - 7.5(1% aq soln)
Aggregation Number: 4
Critical Micelle Concentration (CMC): 3-11 mM
Heavy Metals: =20 ppm
Loss on Drying: =7.0%
NOTES: Sodium Cholate : =3.0%
Solubility: Soluble in water (100 mg/mL).
Storage & Handling: Store at Room Temperature (15-30 °C).

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VOL. FLASK 25ML CLASSA ST14/23 1 * 1 items

Supplier: witeg Labortechnik

VOL. FLASK 25ML CLASSA ST14/23 1 * 1 items

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Platemate Tips, 25ul pk 10 x 96 1 * 960 items

Supplier: THERMO MATRIX TECHNOLOGIES

Platemate Tips, 25ul pk 10 x 96 1 * 960 items

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Waste caps, b.safe

Supplier: Bohlender

Safe collection of hazardous waste is an important part of the laboratory work routine. b.safe waste caps connect waste lines from your HPLC/UHPLC leak-tight with your waste container. The waste caps are available in various sizes to fit your specific waste container safely.