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668 matches found for gas_chromatography

Quick, Sensitive LC/MS/MS Analysis of Aflatoxins in Cannabis

Related Products • Cannabis Testing • Food & Beverage Analysis • Toxins (other than pesticide/drug residues) • Supel™ Tox SPE Cartridges Related Articles • Reporter US Volume 34.2 • Analysis of Residual Solvents in Hemp Extract by Headspace SPME-GC/MS • Headspace SPME GC/MS Analysis of Terpenes in C...

Biodiesel

Biodiesel is a renewable, alternative diesel fuel produced from vegetable oils, animal fats, or recycled restaurant grease. This non-toxic, biodegradable liquid fuel consists of mono-alkyl esters of long chain fatty acids (also known as fatty acid methyl esters, or FAMEs) and may be used alone or bl...

Gas Chromatography | Supelco GC Columns and Accessories

Our full-line of capillary gas chromatography (GC and GC/MS) columns includes ionic liquid, MS-grade, Fast GC, GCxGC, chiral, and PLOT columns to serve multiple industries (including environmental, petroleum, chemical, food & beverage, and pharmaceutical). We also offer the most complete line of pac...

New Lab Start-Up Product Savings

Sigma-Aldrich New Lab Start-Up Program – Product Savings With the Sigma-Aldrich New Lab Start Up Program, you will receive: Savings on Essential Life Science Products Cell Culture Discounts (up to) Liquid Media* 50%* Powdered Media 20% Antibiotics 15% Growth Factors 10% Reagents 20% PCR Reagents Dis...

Bioethanol

Related Information • Biodiesel • Detection of Chloride and Sulfate with Dication and Trication Solutions Bioethanol is a renewable, alternative fuel traditionally produced by the yeast fermentation of sugar. When used as an oxygenated additive in gasoline to yield a cleaner-burning fuel, blends typ...

Cross Coupling Reactions of Chiral Secondary Organoboronic Esters With Retention of Configuration-

We describe a systematic study of the scope and relationship between ligand structure and activity for a highly efficient and selective class of catalysts containing sterically hindered chelating alkylphosphines for the amination of heteroaryl and aryl chlorides, bromides, and iodides. In the presen...

BugBuster® and Benzonase® Reagents are the Clear Solutions to Simple, Efficient Extraction of E. coli Proteins

There are a variety of methods for cellular disintegration and extraction of proteins from E. coli ranging from enzymatic digestion and osmotic shock to ultrasonication and pressure disruption. Each method has inherent advantages and disadvantages. Generally, vigorous mechanical treatments reduce vi...

How to Select the Right Water Purification System for Your Lab

Related Products • Milli-Q® IQ 7003/05/10/15 Type-1 & Type-2 Water • Milli-Q® IQ 7000 Type-1 Water • Elix® Advantage • Milli-Q® HX 7000 Series Type-2 High-Throughput Water • Milli-Q® CLX 7000 Connected High-Throughput for Clinical Analyzers • SDS 500 - Water Storage, Protection & Distribution System...

Custom Capillary GC Column Request Form

Please use this form to request a quote for a custom capillary GC column. Fill out all applicable fields. If you are not sure what to enter in one/more fields, provide relevant supporting information within the 'Additional Comments' text box below. We will respond to your request as soon as possible...

GC-MS Solvents

Related Categories • Solvent Center • GC Solvents • Gas Chromatography • Analytical Chromatography We have recently developed a new high purity solvents portfolio for your reliable GC mass spectrometry analysis. These solvents undergo rigorous purification procedures to assure high chemical purity. ...

Imprint® DNA Modification Kit Protocol

• Product Description • Kit Components • Storage/Stability • Workflow • Product Profile • Procedure • Troubleshooting • Frequently Asked Questions • Materials • Materials Required Not Provided • References The Imprint® DNA Modification Kit provides the reagents needed for bisulfite conversion and po...

Air Monitoring Applications

Used in industrial settings to protect workers and prevent environmental and product contamination, air monitoring is used to determine air quality in the working environment. Air monitoring examples include vapor intrusion in residential/commercial settings, contamination from petrochemical industr...

Protease Inhibitor Cocktails References

Our portfolio of protease inhibitor cocktails are frequently cited in peer-reviewed scientific literature, suggesting their superior quality and excellent track record. This page lists a sampling of those research papers. Other citations are available under the specific product pages for each of our...

Accurate Biological Testing for Amphetamine and Methamphetamine Abuse using Chiral HPLC and MS Detection

Denise Wallworth and Hugh Cramer, Supelco denise.wallworth@sial.com In this study, optimized methods are presented for sample preparation and chiral chromatography for the LC/MS analysis of amphetamine and methamphetamine enantiomers in urine. Methamphetamine and amphetamine, powerful CNS stimulants...

Fatty Acid Extraction Kit

Case Study A major food testing company was looking to increase its throughput for the analysis of fatty acids. In this analysis, with a traditional method, the analyst spends a lot of time on the first step: the extraction. The aim of the study is to decrease sample preparation time for the extract...

Extract-N-Amp Seed PCR Protocol

Catalog Number: XNAS2 Storage Temperature -20 °C Product Description Reagents provided Reagents and equipment required, not provided Precautions and Disclaimer Storage Procedures Related Products Troubleshooting Guide Materials References The Extract-N-Amp Seed PCR Kit contains all the reagents need...

Paints & Coatings Solvents Air Monitoring Applications

Solvents are one of the three components of paints. They are petroleum-based chemicals which dissolve the pigment and binding agent for application. Most enamel-based paints use a mild petroleum-based solvent with an alkyd vehicle, and have a long drying and curing time. Conversely, lacquer-based pa...

Fluorous Protecting Groups and Tags

FluoroFlash® tags are perfluoroalkyl modified versions of traditional protecting groups familiar to synthetic chemists. These tags have reactivity profiles very similar to the traditional protecting group, but provide the added benefit of providing a phase tag for purification. FluoroFlash® tags are...

Multi Fiber EXchanger (MFX) System

The Multi Fiber EXchanger (MFX) was developed and produced by Chromline s.r.l. Prato/Italy. It is designed to allow automated consecutive extraction and desorption for a number of different SPME fibers, without the need for manual change-out of the fiber in the autosampler holder. Benefits of automa...

NIOSH 5036 (Issue 1)– Products and Materials Guide

TRIMELLITIC ANHYDRIDE This method uses gas chromatopgraphy and FID techniques to monitor trimellitic anhydride. Trimellitic anhydride chloride is a chemical compound used to produce polyamide-imide plastic.The method was used for analysis of bulk samples and air (field samples). This method will not...

Supelco GC Learning Center

The GC experts at Supelco have assembled their top technical content in one convenient location. This includes column selection criteria and chromatogram search tools, plus other relevant information to help you get the most from your system. On this page: Column Selection, Chromatograms, Presentati...

Khat (Catha edulis) | Plant Profiler

Synonyms / Common Names / Related Terms Abyssinian tea, African salad, Arabian-tea, bushman's tea, cat, cathine, cathinone, Catha edulis, Celastraceae (family), Celastrus edulis, chat, chaat, gat, herbal ecstasy, kat, kus es Salahin, miraa, oat, phenylpropanolamine, qat (Yemen), qat, qut, somali tea...

GC Analysis of Fatty Acids in Walnuts and Peanuts

Nuts are considered nutrient dense foods and their consumption has been associated with reduced risk of coronary heart disease. The health benefits of nuts are partially attributable to their high content of unsaturated fatty acids. For example, α-linolenic acid, or “ALA”, is an unsaturated fatty ac...

How to Choose a Capillary GC Column

An optimized chromatographic separation begins with the column. The selection of the proper capillary column for any application should be based on four significant factors: stationary phase, column I.D., film thickness, and column length. The practical effects of these factors on the performance of...

Analytical Chemistry Key Competencies and Technologies

Review our core competencies, innovative technologies, areas of specialization, and product lines for the Analytical marketplace. To start the discussion about your specific request, business proposal, or idea for collaboration, please contact us. E-mail: analytical@sial.com • Overview of Key Compet...

Ionic Liquids - Uses and Applications

Related Articles • Dibutylphosphate and “Natural” Ionic Liquids • • Download PDF • Ionic Liquids are a new class of purely ionic, salt-like materials that are liquid at unusually low temperatures. Currently, it’s “official” definition uses the boiling point of water as a point of reference: “These a...

SupelMIP® Literature & References

Title Molecularly Imprinted Polymer Overview SupelMIP SPE Brochure (981 Kb PDF) The Selective Extraction of Chloramphenicol using Molecularly Imprinted Polymer SPE, Shimelis O, Trinh A, Brandes H, US Supelco Reporter, 25.1 (482 Kb PDF) Analysis of analytes - The use of MIPs in solid-phase extraction...

Phenolic Calibration Standards

Phenolic compounds are important raw materials for the manufacturing of phenolic resins, pharmaceuticals, laboratory reagents, dyes, germicidal paints, and general disinfectants. Due to their toxicity to both man and animals, manufacturers using these raw materials may be required by local or region...

NIOSH 5019– Products and Materials Guide

AZELAIC ACID Azelaic acid is an organic compound with the formula HOOC(CH2)7COOH. This saturated dicarboxylic acid exists as a white powder. This method uses gas chromatography and FID and may be applicable to other straight-chain aliphatic dicarboxylic acids. Work must be performed in a fume hood. ...

REDExtract-N-Amp™ Blood PCR Kits Protocol

Catalog Numbers: XNABS, XNAB, XNABE, XNABR, XNABRE, and P8240 Product Description Storage Reagents and equipment required but not provided Precautions and Disclaimer Procedure PCR amplification Troubleshooting Guide Materials References The REDExtract-N-Amp Blood PCR Kits contain all of the reagents...