Thomson SINGLE StEP® Filter Vials Solvent Compatibility Chart
Di, 06. Jan. 2015
A Rapid and Sensitive LC-MS/MS Method for the Analysis of Three Forms of Thyroid Hormones using Raptor™ Biphenyl LC Columns

Thyroid hormones are essential for the regulation of development and growth in humans and animals.  The thyroid gland produces thyroxin (T4) and tri-iodothyronine (T3) and quickly releases these compounds into the circulatory system.  The concentration of circulating T4 is 50-60 times higher than T3 and the majority of these molecules are bound to blood proteins.  The unbound or “free” T3 and T4 are the active forms of the hormone which only represent a small portion (less than 1%) of total thyroid hormones.

Di, 06. Jan. 2015
Excellent LC-MS Separation of Penicillins and Cephalosporins Using Ultra IBD Columns

Antibiotics are the most widely used medications in the world. Whether by prescription, addition to animal feed stocks, or use of cleaning agents, everyone in the civilized world is either directly or indirectly exposed to antibiotics in daily life. "e overuse of antibiotics, however, has allowed resistant bacteria to thrive.

 

Di, 06. Jan. 2015
A Fast, Simple FET Headspace GC-FID Technique for Determining Residual Solvents in Cannabis Concentrates

Abstract
Due to rapid growth in the medical cannabis industry, demand is increasing for analysis of residual solvents in cannabis concentrates in order to protect consumer safety. This application note details a simple, fast test for common residual solvents using full evaporation technique headspace GC-FID and an Rxi®-624Sil MS column.

Di, 11. Nov. 2014
Virtually Particle-Free Rt®-Silica BOND Columns

Provide Reliable PLOT Column Performance
With Less Time Lost for Maintenance
By Amanda Rigdon, Bill Bromps, Tom Vezza, and Jaap de Zeeuw

Di, 11. Nov. 2014
Analyze ppb Level Sulfur Compounds Using an Rt®-XLSulfur Micropacked GC Column or an Rtx®-1 Thick Film Capillary GC Column

Sulfur compounds in petroleum streams can have detrimental e"ects on the performance and longevity of the catalysts used in
hydrocarbon processing.

Do, 02. Okt. 2014
GCxGC Columns Your One Source for 2D Gas Chromatography

GCxGC is a powerful multidimensional GC technique that combines two independent separations to accurately analyze highly complex samples.

Do, 02. Okt. 2014
How to Choose a GC Inlet Liner: Simplify Selection Based on Injection Type

Choose the best liner for Split injection, Splitless injection, Direct injection, Gas injection, PTV injection

Do, 02. Okt. 2014
Grape Flavor Analysis Using an Rt-gDEXsa™ GC Column

The enantiomeric ratios of certain chiral compounds found in flavorings can sometimes reveal adulteration.

Do, 02. Okt. 2014
Sample Preparation and GC Analysis of Organo Tin Compounds

Organo tin compounds are of environmental interest because of their addition to several lists of endocrine disrupters,¹ and the attribution of shellfish growth abnormalities to the use of tributyl tin as a marine antifouling agent.

Do, 02. Okt. 2014

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