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Quality you can rely on: Test and calibration gas from Westfalen.
Gas detectors can save lives: if there is an increased concentration of unwanted gas in an underground car park, for example, the little helpers signal danger. But for the devices to work reliably, they have to be calibrated regularly. The same applies to many analytical devices and gas sensors - these devices must undergo regular calibration to guarantee their proper operationg. Our calibration gases and test gases reliably help you with this!
As a DAkkS-accredited calibration laboratory and manufacturer of reference materials, our specialty gas centre supplies products that meet the highest requirements!
We either implement already concretely defined compositions (standard test gas mixtures) or we develop a new highly specific gas mixture together with you that perfectly fits your requirements. Choose from around 200 individual components and over 40,000 variants, depending on the measurand, measuring range, measuring condition or measuring uncertainty!
We offer Westfalen's test gas mixtures with defined composition for routine applications as standard under short-term availability in our online shop. These gas mixtures are supplied in cylinders with up to 200 bar filling pressure. The calibration gases have a high accuracy and are suitable for analysis and measuring devices or instruments according to defined industry standards.
Westfalen uses two main methods to produce calibration gas mixtures: manometric and gravimetric filling. With a final analysis, we prove the perfect quality of the gas mixtures produced in this way. The results are documented in a certificate of analysis.
If traceability to international standards is necessary, e.g. due to legal requirements, the calibration gases can be supplied with a DAkkS calibration certificate. If you need the test gases as reference material, e.g. for the calibration of AU devices, we supply them according to DIN EN ISO 17034.
The Westfalen Specialty Gases Centre has been accredited by the German Accreditation Body (DAkkS) since 2006 and thus provides proof of competence as a calibration laboratory in accordance with DIN EN ISO/IEC 17025. The test results are shown in a certificate of analysis which, in addition to the measurement results, measurement uncertainties and measurement conditions, also lists the calibration procedure and the reference standard.
The accreditation as a calibration laboratory according to ISO 17025 authorises Westfalen to produce test gases with a DAkkS calibration certificate. In addition to readily available standard mixtures, individual mixtures are also produced according to customer specifications.
The traceability of measurement results of the analysis to international standards is a necessary criterion for reliable and comparable results.
Do you need a specific gas mixture?
DAkkS-compliant test gas with calibration certificate is analysed four times more frequently in the manufacturing process than a standard gas mixture. For the calibration, therefore, three reference gases were used instead of one. More safety is not possible!
The analysis of gas mixtures is carried out according to the specifications of DIN EN ISO 6143. The results are documented in a certificate of analysis according to DIN EN ISO 6141. The certificate contains all information on manufacturing accuracy, analytical accuracy and standard deviation.
As a calibration laboratory, Westfalen can thus prove the perfect quality of the gas mixtures produced in this way.
Reference materials in the sense of DIN EN ISO 17034 are mixtures of substances with precisely defined composition, which are connected to the international system of units (SI) through complete metrological traceability and through defined measurement uncertainties. During the production of the mixtures, the proportion of each component is determined gravimetrically and verified analytically after the filling process. Reference materials for the calibration of measuring instruments are essential for the accuracy of results and as such are an indispensable part of chemical analysis.
The lightweight Alumini® small containers are ideal for mobile use.
For the resource-saving reusable container, a practical hard-shell case with removal equipment can also be ordered - ideal for taking along and stowing away.
Our product and safety data sheets are available for you in our online shop. Search and navigation also work without logging in. You will find the files at the respective product under "Downloads".
Tabular overviews of our test gases according to DIN EN ISO/IEC 17025 with presentation of measurand, measuring range, measuring conditions and measurement uncertainty can be found in our brochure "Your safety through our quality". In addition, we list our certified reference materials according to DIN EN ISO 17034 (AU gases and environmental gases) in the document.
You can find an overview of the available container sizes in our online shop. Search and navigation also work without logging in. The information can be found on the respective product under "Delivery forms". We also offer detailed information on the advantages of our Alumini® small containers.
Yes, you can also get equipment for transport, gas extraction and safety from us - from pressure regulators and connections to practical cases and gas detectors. Our experts will be happy to advise you!
Our standard gas mixtures, such as our gas products for calibrating gas sensors, test gases for AU devices or operating gases for emission measurement, are available with just a few clicks via our online shop. For individual customer mixtures, please contact us personally - we look forward to hearing from you! After your initial order, you can also place repeat orders for your customised products via the online shop.
Want more details? Or order now?
You can find comprehensive information regarding our standard gas products and available delivery options on our online shop.
For mobile use or small quantities. The economical and practical alternative to the supply with classic, large high-pressure containers.
Learn more about our test gases with calibration certificate for exhaust gas measuring devices. Certified according to DIN ISO/EC 17025 and thus permitted for AU measuring devices and exhaust gas testing.
Mit unseren Gasen zur Typgenehmigung von Motoren erhalten Sie garantierte Gasqualität, Gasereinheit und Konformität zu allen aktuellen Gesetzen.
Betriebsgase zur Emissionsmessung