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Environmental Accounting Supplier Toolkit

The Environmental Accounting Supplier Toolkit helps suppliers measure, manage, and reduce their environmental impact.

Determination of Formaldehyde and Acetaldehyde in Air Using DNPH Cartridges and Automated On-Line Desorption Followed by HPLC

Carbonyl compounds react within the DNPH cartridge to form immobilized hydrazones, which can be subjected to automated desorption and HPLC analysis with UV detection.

Extract-N-Amp™ Product Guide

Extract-N-Amp™ PCR kits are the world’s first integrated extraction and amplification process for rapid blood, tissue or plant assays.

PCR/qPCR/dPCR Assay Design

PCR workflow's variability influenced by sample source, reverse transcription, and assay design, impacting reproducibility.

Ammonium in Wastewater

Step-by-step accurate reflectometric determination of ammonium in wastewater with Nessler’s reagent or Indophenol blue using Reflectroquant®system and test strips.

Analytical Method: Analytical Quality Assurance, Standard for COD/Chloride

Preparation of a standard solution for COD/chloride

Analysis: Activated Nucleotide Sugars by LC-MS/MS

LC-MS/MS method quantifies similar polar nucleotide activated sugars using Supel™ Carbon LC column for simultaneous analysis.

Ascentis® Express Biphenyl UHPLC and HPLC Columns

The bonded, densely endcapped, dimethyl-biphenyl stationary phase of Ascentis® Express 90 Å Biphenyl, based on fused-core particles, provides a stable, reversed phase packing with enhanced π-π and mild steric interactions due to the two sequential phenyl groups bonded to the

Ascentis^® Express C18 U/HPLC Columns

Ascentis® Express C18 is the first choice when starting a new separation method.

Ascentis^® Express Peptide ES-C18 U/HPLC Columns

Choose Ascentis® Express Peptide ES-C18 U/HPLC Columns based on Fused-Core® technology for fast and efficient separation of high-molecular weight compounds, such as peptides and small proteins. With a 2.7 µm particle size and rigorous testing, these columns offer reliable results

Ascentis® Express C8 U/HPLC Columns

When a C18 doesn′t give the desired separation, or your sample contains compounds that are known to be difficult to retain or resolve on a C18, consider changing to an Ascentis® Express C8 column.

Ascentis® Express F5 (Pentafluorophenyl) U/HPLC Columns

Enhanced selectivity for stereoisomers and closely related compounds with alternate selectivity from C18 phases for basic, acidic, or neutral compounds

Ascentis ® Express HILIC U/HPLC Columns

For separation of polar compounds including polar neutrals, polar acids, and polar and non-polar basic amines use our Ascentis® Express HILIC column.

Ascentis® Express Phenyl Hexyl Columns for U/HPLC

Improve your reversed phase selectivity for polar aromatics and heterocyclic compounds with the Ascentis® Express Phenyl-Hexyl U/HPLC column.

Ascentis® Express RP-Amide HPLC Columns

Innovative particle technology and RP-Amide bonding chemistry enhance chromatography performance for improved peak shape and resolution.

Ascentis® Express RP-Amide Columns for HPLC and UHPLC

Improve your separation of basic compounds with our Ascentis® Express RP-Amide HPLC columns from the Supelco® portfolio.

Determination of Tramadol in Urine using LC-MS/MS

This article presents an LC-MS/MS method for the determination of tramadol in urine samples using reversed-phase LC-MS/MS aided by isotope internal standards.

Developing HPLC Methods

We recommend every HPLC method developer have these four columns in their arsenal; Ascentis C18, Ascentis RP-Amide, Ascentis Phenyl and Discovery HS F5.

Efficient Analysis of Kava Extract: New phytochemical certified reference material mixes for ginger and kava

Learn more about our Kava CRM solution for use in quantitative and qualitative analysis of kavalactones and flavokavains in kava products to confirm their potency and authenticity.

Improving USP Lansoprazole Analysis with HPLC

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

Ion Pairing for Phosphonate Compound Analysis

Phosphonates analysis challenges due to their polar nature and lack of UV active chromophores in antiviral drugs.

The Carbon Enigma: Material Fundamentals and Retention Properties for Porous Graphitic Carbon (PGC) Stationary Phases

A shortened review of fundamentals of Porous Graphitic Carbon (PGC) materials. What they are and how do they work as a stationary phase material in HPLC?.

How to Maximize Sensitivity in LC-MS

LC-MS sensitivity optimization tips minimize contaminations, enhancing detection limits and spectrum clarity for accurate analysis.

UHPLC Analysis of Cannabinoids

Cannabis products need cannabinoid characterization. Ascentis Express C18 resolves 14 similar cannabinoids in under seven minutes with excellent peak shape.

UHPLC Analysis of Diclofenac in Gel using a Monolithic Silica Column

A comparative UHPLC analysis of diclofenac sodium in gel using Chromolith® HighResolution RP-18 endcapped 100 x 2 mm I.D column and FPP 1.7 µm hybrid silica C18 100 x 2.1 mm I.D column with UV and MS detection.

UHPLC Analysis of Nucleosides on Supel™ Carbon LC Column: Performance Comparisons with Competitor

Ultra-high performance liquid chromatographic (UHPLC) separation of 12 nucleosides using Supel™ Carbon LC column in 15 minutes for use in identification and quantitation of nucleoside biomarkers.

UHPLC Analysis of Paraquat and Diquat on Supel™ Carbon LC

Ultra-high performance liquid chromatographic (UHPLC) separation of polar herbicides, paraquat and diquat using SupelTM Carbon LC column with baseline resolution, excellent peak shape, and good lot-to-lot reproducibility.

Ultra-High Performance Liquid Chromatography (UHPLC) with the Ascentis® Express Phenyl-Hexyl Column

Ion-Suppression & Phospholipid Contamination

An article focusing on ion-suppression and phospholipid contamination and some of their major causes and difficulties.

LC-MS Analysis of Serum for a Wide Analyte Range Using a Novel HLB SPE Phase

Analysis of 20 pharmaceutical compounds in calf serum using Supel™ Swift HLB SPE cartridge for cleanup and LC-MS determination and another commercially available HLB cartridge for comparison.

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