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Reference Standards for Analyzing Polyphenol Catechins
Reference Standards for Analyzing Polyphenol Catechins
Calculating Your Working Tolerance: A Guideline
Guideline to calculate your working tolerance - Certified Standard Solutions (CRM)
Bioethanol
Learn more about Bioethanol as a renewable, alternative fuel traditionally produced by the yeast fermentation of sugar.
Isotopic Labeling for NMR Spectroscopy of Biological Solids
Isotopic Labeling for NMR Spectroscopy of Biological Solids;
Quick, Sensitive LC/MS/MS Analysis of Aflatoxins in Cannabis
Analyte recovery values from spiked cannabis extracts ranged from 102 to 127% with RSD below 12% for 3 replicates. Excellent recovery values were even observed for Aflatoxins B2 and G2 which were spiked at a low level of 6.1 ppb.
Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS
Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS
LC/MS/MS Method for Determination of Glyphosate, AMPA, and Glufosinate in Cereals
Glyphosate and related compounds are measured in oatmeal and infant cereal using ion-exchange polymer-based particles for HPLC and SPE. Low level detection was obtained.
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.
Cannabinoid Certified Reference Materials (CRMs) for an Improved Testing Accuracy and Traceability
We offer a portfolio of cannabinoid CRMs such as THC and THCA, available as single component solutions or mixes, certified in accordance with ISO 17034 and ISO/IEC 17025 for accurate cannabinoid profiling and potency testing.
Solution with 17 Amino Acids as TraceCERT® Certified Reference Material
Technical article on "Solution with 17 Amino Acids as TraceCERT® Certified Reference Material"
Quantification of Bitter Acids in Hops by Thin Layer Chromatography
HPTLC separation followed by UV detection of the bitter acid content in various hop samples.
Comparison of QuEChERS Products for the Extraction of Planar Pesticides from Spinach
Supel™ QuE Verde combines a novel carbon with zirconia coated silica (Z-Sep+) to provide an optimum balance between planar pesticide recovery and color removal.
Biodiesel
Learn more about Biodiesel as a renewable, alternative diesel fuel produced from vegetable oils, animal fats, or recycled restaurant grease.
Optimizing for High Throughput Analysis of Cannabinoids in a Variety of Matrices Using Ascentis® Express C18 Column
A complete workflow for the HPLC separation of 17 cannabinoids in different cannabis products using Ascentis® Express C18 Column in a shorter run time with retention time stability. Learn more here.
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
NMR Deuterated Solvent Properties Reference Chart
Use this reference table to find the coupling values and chemical shifts of our NMR (deuterated) solvents. Melting and boiling points, molecular weight, density, and CAS number are also listed.
Improving USP Lansoprazole Analysis with HPLC
USP methods continuously revised for modernization and improved results in drug testing.
HPLC Separation: Ginsenosides from American Ginseng
Optimize HPLC method for ginsenoside separation using a mixture, applying it to American Ginseng root, with conditions and chromatograms shown.
Flame Retardant Analytical Standards
Flame Retardant Standards: PBDE Standards. Polybrominated diphenyl ether standards accompany our chromatography products for this important analysis.
Certified Reference Materials for ¹⁹F NMR
Introduction of 19F qNMR certified reference materials for complex molecule certification.
New cis/trans FAME Standard for GC Optimization
AOCS and AOAC methods for trans fatty acid composition require highly polar cyanosilicone capillary columns.
Elemental Impurities - Certified Ref. Materials
Control elemental impurities in drug products with analytical methods and materials to ensure patient safety.
Choosing Correct Reference Material Quality Grade
Choose ideal reference materials for analytical testing needs, whether for calibration or quantitative analysis, ensuring accuracy and reliability.
Columns and Analytical Standards for Protein SEC
Size-exclusion chromatography (SEC) columns and ready-to-use standards facilitate method development and increase robustness of protein SEC methods.
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.
High-Performance Quantitative H-1 NMR
The signal ratio of two different protons can be measured with tremendous precision, which enables the generation of certified reference materials for use as qNMR standards.
Determination of Stevioside and Rebaudioside A in Stevia leaves, beverages and food additives using HPTLC-MS
HPTLC-MS was used to analyze stevioside and rebaudioside in artificial sweeteners, stevia plants, cola and isotonic drinks with a minimum of sample preparation.
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.
The Proper Storage and Handling of Volatile Analytical Standards
Properly storing and handling standards is critical to achieving accurate and reproducible analytical results.
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.
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