To ensure high-precision performance from temperature measurement devices, reliable calibration is required. This can be carried out on site or under laboratory conditions, using primary or reference standard sources. Primary calibration sources are traceable to National Standards via a certified probe installed in the radiation cavity. Reference sources achieve traceability either by comparison with certified thermometers, or through purchasing a calibration certificate.
By AMETEK Land based in Dronfield, UNITED KINGDOM.
This analytical procedure is intended for measuring the content of the elements (cadmium, lead, arsenic, tin, chromium and mercury) in the samples of food products by atomic absorption spectrometry with electrothermal atomization using an “MGA-915M” Graphite Furnace AA Spectrometer.
The method is based on measuring resonance radiation absorption that occurs when the radiation passes through a layer of atomic vapor in the electrically heated graphite furnace of the “MGA-915M” AA spectrometer. The concentration of the elements is determined from the integrated analytical signal and is calculated using a preset calibration graph. The samples of food products are digested prior to analysis in accordance with standard methods.
By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).
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