hplc vials Articles

  • Advances in Bromine Speciation by HPLC/ICP-MS

    Bromine is a natural component found in waters, most commonly as the bromide ion, Br-. A common procedure for purifying drinking waters is treatment with ozone to kill bacteria. A byproduct of ozonolysis is the conversion of bromide to bromate (BrO3-), a known carcinogen. Therefore, a need exists to measure both bromide and bromate in drinking waters, as opposed to total bromine content. Our ...


    By PerkinElmer, 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

  • Aminoglycoside Antibiotics in Feed Apramycin, Gentamicin, Neomycin

    Aminoglycoside antibiotics are among those commonly used in animal feeds to manage intestinal microorganisms. The beneficial effects include improved growth and generally healthier animal populations. Use of antibiotics creates a demand for analytical procedures to verify concentrations in pre-mixes and feeds and in some instances for residue analysis in animal products. This note describes a ...


    By Pickering Laboratories, Inc.

  • News on Air 2013, Volume 4: Labware and Reagents

    Welcome to volume 4 of our News on Air bulletin. This edition focusses on some of the labware and reagents that are used in this challenging area of analysis. Success in air monitoring quantitation requires that all the equipment and reagents used are inherently low in background concentrations, to prevent false positives. Commonly used materials may include: Filters, membranes, and ...


    By Sigma-Aldrich Co., LLC

  • Analysis of biogenic amines food and physiological samples

    Histamine and other polyamines such as Putrescine, Cadaverine, Spermidine and Spermine are products of decomposition. The level of histamine, in particular, has been used as a regulatory guideline for degree of decomposition in fish. Also, Histamine and Tyramine levels are of interest to producers of wine and cheese. The polyamines, Spermidine, Spermine and Putrescine are elevated in neoplastic ...


    By Pickering Laboratories, Inc.

  • ChlorAC Buffer

    Introduction Trace analysis of carbamate insecticide residues in water is a routine requirement in the U.S. Since several of the common carbamates — Carbaryl, Oxamyl, Hydroxycarbofuran — are labile in water due to oxidation or hydrolysis, the samples and standards must be preserved in order to obtain valid results. USEPA Method 531.1 specifies pH adjustment, ...


    By Pickering Laboratories, Inc.

  • RaPID Assay carcinogenic PAHs in soil application

    Intended Use For detection of Carcinogenic PAHs (as benzo(a)pyrene) in soil. For testing in other matrices, please contact our technical support department at 1-800-544-8881. Materials Required but Not Provided SDI Sample Extraction Kit (Part Number: A00204EA/A00204EB) Procedural Notes and Precautions Prepare ...


  • RaPID Assay PAH in soil application

    Intended Use For detection of Polynuclear Aromatic Hydrocarbons (PAHs) (as phenanthrene) in soil. For testing in other matrices, please contact our technical support department at 1-800-544-8881. Materials Required but Not Provided SDI Sample Extraction Kit (Part Number: A00160EA/A00160EB) Procedural Notes and Precautions ...


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