Laboratory Vials Articles

  • 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 MilliporeSigma

  • Time resolved liquid scintillation counting: (TR-LSC™) for environmental 3h analysis

    Environmental analysis of many naturally occurring and man-made, beta emitting radionuclides, including 3H, 14C, 90Sr/90Y, 241Pu, and 234Th is a significant analytical challenge due to the extremely low activity levels encountered. Under these circumstances, reducing instrument background is essential for improving analytical sensitivity. Time-Resolved Liquid Scintillation Counting (TR-LSC), a ...


    By PerkinElmer, Inc.

  • 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.

  • The Spectrex particle counter used in study of pharmaceutical glass delamination.

    Delamination, or the generation of glass flakes in vials used to contain parenteral drug products, continues to be a persistent problem in the pharmaceutical industry. To understand all of the factors that might contribute to delamination, a statistical design of experiments was implemented to describe this loss of chemical integrity for glass vials. Phase I of this study focused on the effects ...


    By Spectrex Corporation

  • VialTweeter at UIS250L - Intensive Sonication of Vials

    Sonication is a very effective method for the mixing, homogenizing, emulsifying, dispersing, ...

  • Detection of chlorpyrifos on whole oats

    MATRIX: Whole grain oats ANALYTE: Chlorpyrifos RANGE OF DETECTION: 15 ppb to 204 ppb MATERIALS: Chlorpyrifos RaPID Assay and Chlorpyrifos Sample Diluent. RaPID Prepä Soil Collection Kit. Reagents: methanol (pesticide grade). Equipment: 13x100 mm glass test tubes; 5.0 mL serological pipet, precision pipet capable ...


  • Preparation of <25x or >100x dilutions with the rapid prep universal range extension kit

    GENERAL COMMENTS: This procedure describes how to prepare dilutions of less than 25x or greater than 100x using the appropriate RaPID AssaysÒ Sample Diluent and components of the RaPID PrepÔ Universal Range Extension Kit. Preparing dilutions of 25x to 100x are already described in the package insert of the Universal Range Extension Kit. Serial dilutions using components of the ...


  • 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.

  • 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.

  • 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.

  • A simple and fast micromethod for the analysis of polychlorinated biphenyls in air by sorbent enrichment and ultrasound-assisted solvent extraction

    Abstract  A combination of sorbent enrichment and ultrasound-assisted solvent extraction has been used to determine polychlorinated biphenyls in air. Analytes were sampled by pumping a known volume of air through a porous polymer (Tenax TA). The enriched adsorbent was transferred into a glass vial, and ultrasound-assisted extraction of the analytes was then performed in ...


    By Springer

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