301 Resultados para: "VWR"

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Hierro (II) sulfato heptahidrato ≥99% ACS

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Cloroformo : Alcohol isoamílico (24:1 v:v)

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Sodio hidróxido, en lentejas, grado proteómico

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Ditiotreita (Reactivo de Cleland) for biochemistry

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VWR®

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May be used for the precipitation or fractionation of proteins or for purification of antibodies. Useful for crystallographic analysis of nucleic acids and proteins.

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2-Mercaptoetanol ≥99% grado biotecnología

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Ácido ortofosfórico ≥85% ACS

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Fenol : Cloroformo : Alcohol isoamílico (25:24:1) (v/v/v) ≥99.0%, Biotechnology Grade 1 Phase, VWR®

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Ribonuclease A is an endoribonuclease that efficiently hydrolyzes RNA contaminants in DNA preparations from tissue or bacterial cell cultures. RNase A is used for a variety of molecular biology applications, most commonly for the hydrolysis of RNA that contaminates DNA preparations. This enzyme is used during plasmid purification without nicking or degrading plasmid.

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Sodio gluconato 98-102%, en cristales, grado alta pureza

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Denatured with 5% methanol

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Potasio yoduro ACS

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An excellent reagent for maintaining SH groups in reduced state; quantitatively reduces disulfides. DTT is effective in sample buffers for reducing protein disulfide bonds prior to SDS-PAGE. DTT can also be used for reducing the disulfide bridge of the cross-linker N,N′-bis(acryloyl)cystamine to break apart the matrix of a polyacrylamide gel. DTT is less pungent and is less toxic than 2-mercaptoethanol. Typically, a seven fold lower concentration of DTT (100 mM) is needed than is used for 2-mercaptoethanol (5% v/v, 700 mM).

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One of the best general-purpose buffers for biological research. Excellent for tissue culture, oxidative phosphorylation, protein synthesis with cell-free bacterial systems, photophosphorylation, and CO₂ fixation.

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Reagent for stabilization of buffer formulations and electrophoresis of biological molecules.

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AMRESCO’s molecular biology grade glycogen is an inert carrier that increases the recovery of nucleic acids after alcohol precipitation. Insoluble in ethanol or isoproanol, glycogen traps the nucleic acids during precipitation and forms a visible pellet upon centrifugation. As an inert co-precipitant, glycogen efficiently recovers from dilute solutions DNA or RNA molecules ranging in size from small oligonucleotides to megabase molecules

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High purity protein digests used for media supplements.

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TBE is optimized for DNA electrophoresis techniques using both acrylamide and agarose

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1X Solution Composition:135 mM NaCl, 2.7 mM KCl,11 mM Phosphate Buffer.Does not contain magnesium or calcium.

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Dimetil sulfóxido ≥99.9%, Ultra Pure Grade

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MTT (Bromuro de 3-(4,5- dimetiltiazol-2-ilo)-2,5-difeniltetrazol), grado ultrapuro

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Preparation of PBS using 10 L and 50 L Format:
Dissolve 9.88 g of PBS powder in 1 L of water to prepare a 1X PBS solution containing 137 mM sodium chloride, 2.7 mM potassium chloride and 9.8 mM phosphate buffer.
The 10 L and 50 L pack sizes contain sufficient powder to prepare 10 L and 50 L of 1X PBS, respectively.

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Formamida

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Commonly used to denature nucleic acids for electrophoresis and to study the secondary and tertiary structure of proteins. Effective for maintaining DNA in a highly denatured state during sequencing protocols, urea is also useful for accelerating the acti

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Zwitterionic, both positively and negatively charged. Utilized for applications ranging from solubilizing membrane proteins in non-denaturing conditions to creating denaturing conditions during gel electrophoresis.

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Suited for purification of nucleic acids or polypeptides from cell sources and inhibition of both RNase and protease activity.

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Optimized for RNA Agarose Electrophoresis

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Rapid Transfer Buffer is a simple, single component system for quick and efficient transfer of proteins from SDS-PAGE gels to membranes for Western blotting applications