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Before you begin, please log in to your account.
Don't have an account yet? It's easy to register for one—simply click the user icon in the top right corner and select "Register."
Step-by-step process:
After logging in, add the desired products to your shopping cart.
Go to your shopping cart to review your selection.
Adjust quantities or remove items—then click "Save changes" to update your cart.
Everything looks right? Then click "Request quote" to create your quote.
Select your delivery address—either a saved one under “Saved Addresses" or enter a new address. Then click "Continue."
Review your billing and delivery addresses, accept our terms and conditions, and complete your request by clicking "Submit request for quote."
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Are you interested in one of our products or need more information? We're happy to help!
Send us your inquiry in the way most convenient for you:
Additionally, a dedicated inquiry form is available for each of our custom standard categories to ensure your message reaches the right contact person.
Reference material, accompanied by a certificate, one or more of whose property values are certified by a procedure which establishes its traceability to an accurate realization of the unit in which the property values are expressed., and for which each certified value is accompanied by an uncertainty at a stated level of confidence. The CRMs are certified by a recognized certifying organization using approved certification procedures of certification as instructed in ISO Guide 35:2017 “Reference Materials – General and statistical principles for certification”. A CRM is the highest order to which an analytical reference material can be elevated because of the traceability to SI units and because of the attributed confidence in the company or organization which produced the material.
A material or substance one or more of whose property values are sufficiently homogeneous and well established to be used for calibration of an apparatus, the assessment of a measurement method or for assigning values to materials. The RMs usually have been through interlaboratory testing using many analysts and are supplied with a certificate of analysis but do not strictly follow all procedures of certification as indicated in ISO Guide 35.
Materials of minimum inhomogeneity to be used for monitoring or adjustment of the analytical signal of the instruments. These materials are assigned values during calibration with CRMs and RMs, thus they do not have a certified analysis, but a guiding one only. Such standards are also referred to as “recalibration samples," "drift control samples" and “monitor samples."
Can't find a standard in our product range that meets your requirements? No problem!
We also offer customized standards and custom blends.
To request a quote for a custom standard, simply use the inquiry forms found in our custom-made categorie here. Click for an overview of our custom-made standards.
Alternatively, you can also contact us by email or phone – we'll be happy to create a customized standard made exactly to your specifications.
Please read the enclosed instructions carefully before opening the product.
The recommended sample volume is particularly important – it is usually determined by the manufacturer after careful review of the certification data. The use of a smaller amount is one of the most common sources of error.
Some reference materials can be toxic or potentially hazardous and therefore require special care during handling. Although processing procedures eliminate most known bacteria and viruses, it cannot be guaranteed that all certified reference materials (CRMs) with a biological matrix are completely free of infectious agents.
Some manufacturers do use gamma irradiation to increase the stability of natural matrices. However, this does not provide an absolute guarantee of sterility.
