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Certified Reference Articles & Analysis
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In the production of galvanized rolled steel products, it is critically important to strictly control the composition of metallic coatings. Modern protective coatings on steel – from traditional zinc to complex zinc-aluminum-magnesium alloys – contain alloying elements (additions) such as aluminum (Al), magnesium (Mg) and silicon (Si). These additions have a strong influence on the ...
This report will demonstrate the performance of FLUXANAs certified Reference Materials and the VITRIOX ELECTRIC 4+ to meet the tolerances stated in the ASTM ...
In analytical chemistry, standard substances are essential for measurement accuracy, precision and traceability. There are two of these, Certified Reference Materials (CRMs) and Reference Materials (RMs), which are distinct yet complementary. ...
Gas chromatography (GC) is an extremely useful technique due to its extensive sensitivity, speed, selectivity, and ability to examine complicated mixtures that contain a variety of components. Its capabilities mean it has a range of applications, from examining toxins and drugs in forensic science to being applied to quality control within manufacturing procedures. With so many depending on the ...
Calibrating Continuous Emissions Monitoring (CEM) gas analyzers is crucial for ensuring the reliable measurement of emissions from industrial smokestacks and maintaining compliance with environmental regulations. Using a CEM calibration system can create precise and dependable emission measurements. Read our guide to understand the key steps and requirements for calibrating CEM gas analyzers with ...
Calibration gas is surprisingly important to successful compliance with industrial emissions regulations. Various legislation mandates the need for continuous emission monitoring (CEM) in industrial installations. The best-known piece of relevant U.S. legislation is the Clean Air Act (CAA), while Europe has the Industrial Emissions Directive (IED). Each requires installations to monitor and ...
It involves comparing the response of an instrument to a known gas flow rate with a precision reference instrument. If there is a difference between the two measurements, adjust the setting of the air flow meter to correct the error. ...
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Analytical chemistry is a complex discipline that focuses on extracting information about the composition and structure of samples using advanced techniques. Generally speaking, these samples must be separated into their component parts for identification and quantification. Thus, separative techniques like gas chromatography (GC) are central to the field. Both qualitative and quantitative ...
Gases can be particularly challenging to measure in comparison to liquids and solids. For many applications that involve gas mixtures, the relative concentration of the different gaseous species is the important value as this is related to the number of molecules of a given gaseous species. As the volume and pressure of a gas is temperature dependent, volumetric measurements to calculate gas ...
ISO 21501-4 is the recognized standard for optical particle counter calibration. In this blog, we look at the basics of the ISO 21501-4 standard for those new to particle counter ...
The devices must comply with the following minimum requirements: Accuracy of ± 0.5 °C. Calibrated against a certified, traceable reference standard at least once a year. Ability to be placed to monitor worst-case temperatures within the storage. ...
What a mess our lives would be without standards. We expect to be able to move from our car, office, and our home with the use of a singular device. This has not been achieved yet, but “standards” are constantly being developed to allow the interchangeability of data and ...
Chromium is a key ingredient in a number of metal alloys used for metal implants which, despite being coated with inert surface layer coatings, can break down over time as a result of biocorrosion. Leeching of metal ions from implants into surrounding bone, tissue, and body fluids can cause severe health problems. Although the toxicity of the metal is low, there is a potential health risk if ...
More Performance for your ICP-MS ICP-MS (inductively coupled plasma mass spectrometry) is a widely used technology for analytical chemistry. Their multi-element detection capability, the lowest detection limits in the ppb-ppq area, and their versatility make ICP-MS systems the ideal analytical instruments for an incredible range of applications. Whether in the environmental sector, food ...
The method is used when you have a reference sample of composition similar to what you expect in your unknown (production) sample, and that reference sample has a certified compositional value. ...
The internationally approved method for calculating measurement uncertainty – GUM – relies on the availability of a certified reference sample. Similarly, reference samples are also used to find any repeatable offset (systematic deviation of the mean) of your analyser. But what do you do when you don’t have a ...
Certificates of certified reference materials have limited viability, either because of unknown behaviour of opened samples or a general limitation of liability. ...
Ontario reduced the use by law to 20% since mid-2015, Montreal and Vancouver banned all neonicotinoids within city-limits. Reference Materials and Standards We provide a wide range of high quality Pestanal® analytical standards and TraceCERT® certified reference materials for all neonicotinoids and their metabolites as well as ...
Reagecon as one of the largest producers of Physical and Chemical Standards and Certified Reference Materials worldwide, recognise that the growth in the use of such standards requires an innovative approach to the presentation of our products. ...
This volume of News on Water highlights: New ISO Standard 17943 for Determination of VOCs in Water by HS-SPME and GC-MS Extraction of Organic Compounds from Water, Using ENVITM-18 DSK Solid Phase Extraction Disks Watercol columns Certified Reference Materials ready-to-use for water and waste water analysis Detect low concentrations of ...