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A UV-VIS spectrophotometer, as the name implies, measures the intensity of light absorbed (or reflected) by, or transmitted through, a substance at specific wavelengths between about 190 and 900 nm—the ultraviolet and visible spectra. Read More

Clinicians use blood gas analyzers to measure the level of arterial oxygen tension (pO2), carbon dioxide tension (pCO2), and acidity (pH) to assist them in disease diagnosis and treatment. The pO2 is an indication of the pressure of oxygen dissolved ... Read More

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

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

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

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

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