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  • Ultralow-Temperature Freezers: Antarctica in a Box

    Wednesday, February 25, 2015
    In most common parlance, ultralow-temperature freezers (ULT freezers) are containers capable of maintaining an interior temperature of about –80 °C, typically by mechanical means. While they come in different orientations and sizes, they are most ... Read More

  • Spectrofluorometers: Tools for Measuring Fluorescence Signature

    Friday, January 30, 2015
    Spectrofluorometers (or fluorescence spectrophotometers) measure the fluorescence signature of an analyte in a sample based on its specific excitation and emission wavelengths. The fluorescence signature can be correlated to the concentration level ... Read More

  • Product Intelligence: Mighty Readers for Microplates

    Monday, January 26, 2015
    The microplate reader is an essential tool for analyzing assays in many, if not most, life sciences laboratories. Yet like fruit, which can be anything from banana to tomato to compote, a microplate reader can be any instrument capable of accepting ... Read More

  • DNA Sequencers: Cracking the Genomic Code

    Friday, October 24, 2014
    DNA sequencers automate the determination of the precise order of nucleotide bases—adenine, guanine,cytosine, and thymine—in a DNA region of interest. The order of the DNA bases is reported as a text string, called a read. Read More

  • PCR Enclosures: Essential for Improving PCR Accuracy

    Friday, October 24, 2014
    PCR enclosures are designed to provide effective decontamination of solutions, reagents, and equipment before and during polymerase chain reaction (PCR) manipulations in order to improve their accuracy. PCR enclosures, which include PCR workstations... Read More

  • Detecting and Managing Water Contaminants in the Laboratory

    Thursday, October 16, 2014
    Water purity is a fundamentally important factor in many laboratories, yet it is frequently overlooked. Researchers use water in most lab processes, and poor water quality can quickly lead to mounting problems, resulting in the generation of ... Read More

  • LC Columns: Pillars of Sample Purification and Analysis

    Monday, September 22, 2014
    Liquid chromatography columns, or LC columns, have been used in the food, chemical, petrochemical, and pharmaceutical industries and forensic, clinical, and medical determinations for sample purification and analysis. In an LC column, the sample ... Read More

  • Refrigerated Laboratory Centrifuges: Cold Spinners

    Thursday, September 18, 2014
    At their most basic, centrifuges are little more than a motor that spins around, effectively pushing objects out with a force exponentially proportional to their distance from the center of rotation. Some centrifuges sit on a desk and do little more ... Read More

  • Atomic Absorption Spectrometry: The Science of Atomization

    Monday, August 25, 2014
    Atomic absorption spectrometers (AAS) measure the concentration of atoms in a sample in the parts-per-billion range based on their ability to absorb light at a specific wavelength. Most samples analyzed by AAS are liquid samples, and solid samples... Read More

  • Photodiode Array Detectors: An Array of Possibilities for (U)HPLC Detection

    Tuesday, August 19, 2014
    Photodiode array detectors—variously abbreviated as “PDA detectors” or simply “DADs”—are essentially spectrophotometers that transiently measure the absorbance of light by a liquid flowing past. They are the dominant detector type used in ... Read More

  • Total Organic Carbon Analyzers: Essential Tools for Water Quality Testing

    Friday, July 25, 2014
    A total organic carbon (TOC) analyzer measures the amount of TOC present in a liquid or water sample. In environmental applications, TOC is an important indicator of the amount of natural organic matter in the drinking water source, which correlates ... Read More

  • ICP-MS Systems: Broadening the Scope of Trace Metal Testing

    Friday, July 25, 2014
    Inductively coupled plasma-mass spectrometry (ICP-MS) is a type of mass spectrometry for measuring most of the elements in the periodic table with detection limits at or below the parts-per-trillion range. Most samples analyzed by ICP-MS systems are ... Read More

  • Lab Technology Face Off: ICP-AES vs. ICP-OES vs. ICP-MS

    Thursday, July 17, 2014
    The specificity of elemental analysis required and the laboratory budget are the biggest considerations in choosing an ICP-OES system over an ICP-MS system. The amount of samples to be tested per day, as well as regulatory testing standards and ... Read More
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