Calibration, qualification, and validation

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Optimización para el análisis de alto rendimiento de cannabinoides en diversas matrices utilizando la columna Ascentis® Express C18

Una completa secuencia de trabajo para la separación mediante HPLC de 17 cannabinoides en diferentes productos del cannabis utilizando la columna Ascentis® Express C18 en un tiempo de ejecución más corto con estabilidad de los tiempos de retención. Más información

Análisis del agua potable mediante cromatografía iónica utilizando agua ultrapura

En este estudio se revisa la idoneidad del agua ultrapura para el análisis de agua potable mediante IC Se evaluaron iones inorgánicos y subproductos de los desinfectantes (DBP).

Quantification of Infliximab in Human Serum by LC-MS/MS Using A Full-Length Stable Isotope Labeled Internal Standard

Infliximab, a chimeric monoclonal antibody, is used to treat rheumatoid arthritis, psoriatic arthritis, Crohn’s disease, and other autoimmune diseases.

Enzymatic Method for Determining Branched Chain Amino Acids (BCAA Assay)

Assay protocol for the colorimetric detection of Branched Chain Amino Acids (BCAA) in biological samples using the alanine assay kit.

Hopane Reference Standards for use as Petrochemical Biomarkers in Oil Field Remediation and Spill Analysis

We provide high-quality, relevant hopane reference standards to be used as biomarkers for petrochemical oil field remediation and spill analysis.

NMR Reference Standards

NMR reference standards ensure proper instrument performance. Review key operational parameters for these standards such as pw90, sensitivity, resolution and line shape.

Traceable Organic Certified Reference Materials for P-31 qNMR

The use of CRMs for the NMR quantification of phosphorylated organic compounds and metabolites offers several advantages as it is based on a signal comparison of the analyte with an internal or external reference standard.

Melamine Analysis via GC-MS

Sigma-Aldrich presents an article about the analysis of melamine and related compounds in dog food with the use of more economical gas chromatography-mass spectrometry (GC-MS) instrumentation.

Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS

SPME in the Analysis of Illicit Drugs

SPME is used in the analysis of amphetamine compounds by doing pre-extraction derivatization, and is also used in general determinations of other drugs of abuse.

GC Analysis of a 37-Component FAME Mix on Omegawax®

This technical article will discuss GC Analysis of a 37-Component FAME Mix on Omegawax.

Calculating Your Working Tolerance: A Guideline

Guideline to calculate your working tolerance - Certified Standard Solutions (CRM)

Solution with 17 Amino Acids as TraceCERT^® Certified Reference Material

Technical article on "Solution with 17 Amino Acids as TraceCERT® Certified Reference Material"

Extractables Studies of Single-Use Equipment Immediate Identification and Quantification of Unknown Extractables by GC/MS with a Certified Reference Material Mix for Extractables and Leachables

Identification and quantification of the most common extractables originating from single-use equipment by GC/MS and an Extractables and Leachables Screening Standard.

Importance of Volumetric Solution Standardization

The titer determination or standardization of a titration solution is essential for accurate and reliable titration results.

Analysis of Pesticides in Baby Food by Solid Phase Microextraction (SPME) Using a New Overcoated Fiber

A direct immersion SPME method using a new overcoated SPME fiber was developed for the extraction of pesticides from pureed prune baby food.

Vitamin D epi-Metabolites Separated with HybridSPE-Phospholipid

This Sigma-Aldrich article continues to detail new methodology for the analysis of Vitamin D metabolites using HybridSPE-Phospholipid technology.

New Certified Reference Materials for Proteins

CRMs of milk proteins aid accurate testing for infant formula, ensuring compliance and quality control.

Improving USP Lansoprazole Analysis with HPLC

USP methods continuously revised for modernization and improved results in drug testing.

LC-MS Analysis of Warfarin™ in Plasma Samples

LC-MS analysis of Warfarin demonstrates its potential in clinical laboratories for accurate plasma measurements.

Analysis of Fats in Food & Beverages

This article explores the analysis of fats in food and beverage products. From derivatization of fatty acids to FAMEs, to analysis of FAME isomers, and more we are your one-stop shop for all of your food and beverage analysis needs.

New cis/trans FAME Standard for GC Optimization

AOCS and AOAC methods for trans fatty acid composition require highly polar cyanosilicone capillary columns.

Radiello Sampler: Monitoring 1,3-Butadiene & Isoprene

Microbial test method development: Laboratory develops compliant methods for antimicrobial products, ensuring regulatory compliance and quality.

An LC/MS Peptide Standard for Rapid System Suitability Assessment and Retention Time Translation Across LC/MS Platforms

Standards are critical in liquid chromatography/mass spectrometry (LC/MS) based proteomics to ensure optimal and consistent system performance before, during, and after sample analysis.

Improving the Chromatographic Separation of DMB-Labeled Sialic Acids for the Comparison of Biosimilars to Reference Materials

A significantly improved HPLC-fluorescence method for DMB-NANA and -NGNA, and application of this method to compare 2 candidate biosimilar therapeutic proteins to their respective RMs.

Cannabinoid CRMs: Testing Accuracy & Traceability

ISO-certified cannabinoid CRMs, THC and THCA, available as single components or mixes, for accurate potency testing.

Drinking Water Testing by Ion Chromatography using Ultrapure Water

This study reviews the suitability of ultrapure water for the IC analysis of drinking water. Inorganic ions and disinfectant by-products (DBPs) were assessed.

Analysis of California Cannabis List of Pesticides, Mycotoxins, and Pyrethrins Using Ascentis® Express Biphenyl Column

Cannabis testing regulations include analysis of purity, potency, and contaminants. Learn more about analysis of cannabis for pesticides, mycotoxins, and pyrethrins registered in California by LC-MS/MS and GC-MS/MS Using Ascentis® Express Biphenyl and SLB®-5ms Columns

Choosing Correct Reference Material Quality Grade

Choose ideal reference materials for analytical testing needs, whether for calibration or quantitative analysis, ensuring accuracy and reliability.

High-Performance Thin-Layer Chromatography: A Fast and Efficient Fingerprint Analysis Method for Medicinal Plants

In this article we present several HPTLC applications and analytical standards for ginsenosides.

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