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Certified reference materials (CRMs) are 'controls' or standards used to check the quality and metrological traceability of products, to validate analytical measurement methods, or for the calibration of instruments. [1] A certified reference material is a particular form of measurement standard.
Temperature checks are performed by certified thermometers with the aid of Thermowells. Pressure measurements that affect the accuracy of the metering system should have an overall loop accuracy of 0.5 bar or better and the corresponding readout should have a resolution of 0.1 bar or better.
The Greenguard Environmental Institute was founded in 2001 by indoor air quality scientist Dr. Marilyn Black. [citation needed] Her vision was to create a third-party product certifier that could educate consumers and industry professionals about the importance of good indoor air quality and low-emitting products.
A certificate of analysis (COA) is a formal laboratory-prepared document that details the results of (and sometimes the specifications and analytical methods for) one or more laboratory analyses, signed—manually or electronically—by an authorized representative of the entity conducting the analyses. This document gives assurances to the ...
IEC 61520 Metal thermowells for thermometer sensors – Functional dimensions; IEC 61523 Delay and Power Calculation Standards; IEC 61526 Radiation protection instrumentation – Measurement of personal dose equivalents Hp(10) and Hp(0,07) for X, gamma, neutron and beta radiations – Direct reading personal dose equivalent meters
The following publications provide specifications and guidelines for participants in the Certified Ratings Program. AMCA Publication 11 - Certified Ratings Program Operating Manual contains requirements common to all AMCA International's Certified Ratings Programs. Specific requirements that only pertain to a category of product will be found ...
When you have dermatitis in your scalp, it causes inflammation that can irritate the nerves in that area, leading to pain, says Gary Goldenberg, M.D., a board-certified dermatologist practicing in ...
Such thermometers are usually calibrated so that one can read the temperature simply by observing the level of the fluid in the thermometer. Another type of thermometer that is not really used much in practice, but is important from a theoretical standpoint, is the gas thermometer. Other important devices for measuring temperature include: