chromatography column manufacturer Articles

  • Chromatography Tips

    No.1 Gas Chromatography Tips  Our Founders and engineers of the company had accumulated more than 60 years experience in the research and development of HPLC instrumentation; HPLC column technology; mass spectrometer installation, training and services; chemical and biochemical separation, detection and quantification, Proteomics and cancer biomarker research and ...


    By AcuTech Scientific Inc.

  • The development of cation-exchange chromatography in free amino acids analysis

    Although it was not called a liquid chromatograph, the first such instrument was introduced in late 1959 by Beckman Instruments and was designated the M.S. Amino Acid Analyzer in honour of Moore and Stein. Inject valves had yet to be invented, the buffer switching valves were glass stopcocks and the column temperature was controlled by circulating water baths. Two positive displacement pumps ...


    By Pickering Laboratories, Inc.

  • Tips to maintain your HPLC & UHPLC systems and columns

    Recently, Ade Kujore (Cecil Instruments), Tracie Brombos (GenTech Scientific) and I were asked by Angelo De Palma, a well-respected writer for Lab Manager magazine, to contribute to an article about maintaining and caring about your laboratory instruments. Here are my tips/best practices for column and HPLC/UHPC/UPLC system maintenance. Maintaining your ...


    By Waters Corporation

  • Low thermal mass gas chromatography – Analysis at MACH speed

    Gas Chromatography (GC and GC/MS) analysis has been the mainstay for the analysis of regulated organic contaminates in the environmental field. Numerous advancements have occurred in GC instrumentation that include improvements for injectors, detectors, automation, software, and GC column choices. Although many advancements have been made in GC technology, very little has changed for column oven ...


  • Manufacturers face challenges with pharmaceutical impurities

    Pharmaceutical manufacturers may face various challenges when attempting to meet the United States Pharmacopeia (USP) requirements for residual solvents (volatile organic chemicals).Residual solvents in pharmaceuticals are trace level impurities of volatile organic compounds in final products or excipients. In general, residual solvents originate from manufacturing processes related to the ...


  • 30-minute amino acid analysis of hydrolyzed samples

    Pickering Laboratories specializes in the manufacturing of cation-exchange columns and eluants for amino acid analysis. No other tech¬nique has been shown to match the reproducibility and selectivity of ion-exchange analysis with post-column Ninhydrin detection. Nor is there a chromatography technique that provides as much information; the 570/440 nm signal ratio for each amino acid is a ...


    By Pickering Laboratories, Inc.

  • Determining pesticides in dietary supplements with QuEChERS extraction, cartridge SPE, and GCxGC-TOFMS

    Regulatory requirements are driving the development of new multiresidue pesticide methods for dietary supplements. Minimizing matrix interference is critical for data accuracy. The novel approach employed here combines QuEChERS extraction, cartridge SPE cleanup, and GCxGC-TOFMS analysis, and results in good recoveries across a range of compounds found in these complex matrices. ...


    By Restek Corporation

  • Texas Instruments - A Novel Separation Technique for the Analysis of Trace Levels of Atmospheric Contaminants in Inert Semiconductor Process Gases

    A NOVEL SEPARATION TECHNIQUE FOR THE ANALYSIS OF TRACELEVELS OF ATMOSPHERIC CONTAMINANTS IN INERTSEMICONDUCTOR PROCESS GASES J. Scott McWilliams, Alan Johnson, Charlene Long, Jeremiah D. Hogan*Texas Instruments, Inc.Dallas, TX 75265 Low ppb detection limits for contamination in cylinder gases have been achieved with gas chromatography using a modified gas ...


    By Environics, Inc.

  • Surface Decontamination of Pesticides (DDT) by DeconGel 1101

    Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, carbon steel, and concrete surfaces contaminated with Pesticides (dichlorodiphenyltrichloroethane (DDT)) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). ...


    By METIS Scientific

  • BTEX monitor, equal performances to laboratory chromatographs

    Environnement S.A leveraged its technical leadership in this field with an extensive experience, being one of the first companies creating its first BTEX analyser almost 20 years ago. The VOC72M third generation of ...


    By Environnement S.A

  • Proposed plans for UCMR Program

    At an April 2010 stakeholder’s meeting, the EPA discussed proposed plans for the third phase of the Unregulated Contaminant Monitoring Regulation (UCMR) program. If approved, approximately 4,800 public water utilities will be required to monitor up to 30 contaminants starting in 2013. The second phase of UCMR (UCMR 2) sampling, which began in 2008, concludes at the end of this year. UCMR 2 ...


  • EPA Regulations Raise the Bar for Industrial Air Quality Testing

    Far-reaching environmental legislation continues to change the way Americans live, work, and run their businesses. For the past ...

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