Versatile Biphenyl columns provide excellent retention of both polar and nonpolar compounds, resulting
in improved resolution of benzodiazepines, cannabinoids, and other key target compoun
ds for clinical or
forensic applications. (PDF - 633kB)
Biphenyl: Leading Resolution in LC for Clinical and Forensic
Applications
Rxi -5Sil MS columns produce excellent results for a number of forensic applications. The versatile
selectivity separates awide variety of compounds, which lets you keep analyzing samples instead of
changing columns betweenmethods. (PDF - 625kB)
Rxi -5Sil MS: Assured Performance for Forensic Applications
Screeningmethods for consumer product adulteration cases, such as the recent Tylenol recall, can
benefit from fast QuEChERS-based sample preparation and sensitive, full mass-range GC/TOF-MS.
Fast Screening of Recalled Tylenol® for Tribromoanisole and
Related Adulterants Using QuEChERS and GC-TOFMS
An Rxi -5ms column will resolve acidic/neutral or free basic drugs under one set of conditions. There is
no interference from column bleed— not even at 330°C. This is one of the first published applications
for our new family of Rxi columns.
Sensitive GC/MS Analysis for Drugs of Abuse
New Rxi -5Sil MS columns produce consistent results for amphetamine—even after 400 injections of
derivatizing reagent—resulting in less time andmoney spent on columnmaintenance and replacement.
Reduce Downtime and Cost of Materials with Rugged Rxi -5Sil MS
GC Columns
Conventional techniques for vitamin D analysis often lack adequate sensitivity, specificity, and speed.
This LC/MS/MS assay results in highly symmetric peaks that elute in just 5minutes.
5Minute Analysis of Vitamin D in Serum by LC/MS/MS
The headspace (HS) analysis of gamma-hydroxybutyrate (GHB) described here reduces contamination
and eliminates time-consuming derivatization. Confirmation testing using an Rtx -5MS column,
provides definitive results in less than 7minutes.
Fast Screening and Confirmation of Gamma-Hydroxybutyrate (GHB)
in Urine
The headspace (HS) analysis of gamma-hydroxybutyrate (GHB) described here reduces contamination
and eliminates time-consuming derivatization. Confirmation testing using an Rtx -5MS column,
provides definitive results in less than 7minutes. (PDF - 210kB)
Versatile GHB Method For Headspace or Liquid Injection
Screening for evidence of marijuana use is typically done using an immunoassaymethod to detect
derivatives in urine, but confirmation of positive results requires GC-MS. Herewe describe aGC-MS
method, using an Rxi -5ms column, that resolves all major cannabinoidmetabolites to baseline and
exhibits very low bleed, even at 300 °C. We also prolonged column life by baking at 340 °C to remove
derivatization by-products.
Reliably Confirm Cannabinoids by GC-MS
GC/MS analysis of urinary steroid hormones is a demanding application, and the Rxi®-1ms column
meets the requirements for low bleed and inertness better than any column we have tested. We
analyzed a variety of derivatized steroid sex hormones in less than 25minutes, with excellent
resolution and symmetric peaks. At 300°C or above, bleed from the Rxi -1ms column was negligible.
Rapid Analysis of Steroid Hormones by GC/MS
Basic drugs can interact with active sites on the surface of the inlet liner, reducing responses. The
combination of a base-deactivated liner and a base-deactivated Rtx®-5Amine column ensures the
greatest responses in analyses for these compounds.
GC Inlet Liner Deactivations for Basic Drug Analysis
Thermal desorption is used extensively for forensic science. This 16-page publication fromMarkes
International Ltd. presents several key applications including drugs, arson accelerants, trace
explosives, shotgun propellant, and inks. (PDF - 665kB)
Thermal Desorption: A Practical Applications Guide: III. Defence and
Forensic
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