Check the shelves of any research scientist and you’ll likely find Sigma-Aldrich’s products. The company, also known as MilliporeSigma, is a leading supplier of chemicals and lab equipment to research laboratories. They offers more than 200,000 products including reagents, cell cultures, enzymes, solvents, vials, syringes, and labware manufactured internally or by third parties. Sigma-Aldrich also provides lab support and compliance services. The firm’s customers range from academic and life science researchers to pharmaceutical and industrial manufacturers. Sigma-Aldrich is a subsidiary of Germany-based pharmaceutical giant Merck KGaA.


Supelco, a Sigma-Aldrich Corporation subsidiary, is an ISO 9001-registered company that manufactures and distributes an extensive selection of HPLC, chiral, and GC columns as well as SPE products, SPME materials, chemical standards, and customized products and services (such as resin, media processing, and small unit packaging).

Dr. Ehrenstorfer

Since 1975, Dr. Ehrenstorfer™ has led the way in producing pesticide reference standards. Today, their portfolio has expanded to adapt to changing regulations and technology, as They support your need for high quality reference materials for food and environmental analysis. With all measurements on our certificates of analysis carried out in accordance with ISO 17025 and a majority of products produced under the scope of their ISO 17034 accreditation, you know you are receiving the products you need with quality you can rely on.


For more than 25 years, Mikromol™ reference standards have been produced to the highest quality, to provide you with the reliable quality control and validation materials you need. Today the majority of analytical measurements are performed under our ISO/IEC 17025 scope of accreditation and a leading range of products are manufactured according to their ISO 17034 accreditation.
In our range of more than 5,000 pharmaceutical API, impurity and excipient reference standards, each comes with a comprehensive Certificate of Analysis detailing the characterisation process for the material, and ensuring its suitability for both qualitative and quantitative analysis.


In 2012, VHG was acquired by LGC Standards a leading global producer and distributor of reference materials and proficiency testing schemes. LGC Standards has a portfolio of over 100,000 products, and over 40 proficiency testing schemes which support a wide range of sectors.


Toronto Research Chemicals (TRC) has for 38 years specialised in the production of high-quality products for innovative research. With a catalogue of 300,000+ research products and state-of-the-art analytical facilities, TRC’s goal is to provide the tools and support required by researchers in the global scientific community.


The HPC Standards GmbH is a Manufacturer and distributor of high-purity analytical standards for residue analysis. Our ISO 9001 certified and according to ISO 17034 accredited company specializes in the manufacture of reference materials for pesticides, veterinary products as well as their metabolites and stable isotope-labelled derivatives. We are your competent partner in the fields of food- and environmental analysis. Our products are tested in line with international quality requirements and meet the highest industrial standards. Our customers benefit from our proactive support team assisting you all the way from identifying your target substance to on-time delivery and beyond. Our customer service staff will be more than happy to help you adapt your delivery to your personal interests and needs.


Chem Service, Inc. produces high purity standards for use as reference materials and for other laboratory purposes. More than 95% of our Standards Grade materials have a certified purity of 98.0% or greater and do not require purity corrections when preparing solutions for use with EPA, USTM, UST, and numerous other international methods. You can trust that our high purity standards are a quality product.
Standards Grade chemicals are clearly labelled with an expiration date that is based on years of experience in handling and testing. Products are packaged in small quantities to minimize storage, waste, and disposal requirements. Organic and inorganic chemicals, solutions, and mixtures are available to meet a wide range of specialized laboratory needs.


AccuStandard’s product line has grown to include over 12,000 Reference Standard products and twice that number of special formulations which have been developed for specific customer needs. Standards include those for EPA Methods, Pesticide Residue Screening, Flame Retardants, Biofuels, Plastic Additives, Dyes, Explosives, UOP and ASTM Methods and up-graded products for PIANO and Physical Property analyses.

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H.B.C provides optimal solutions for standard chemicals, reference materials, and chemicals analysis for research, testing and production. We are a dynamic, studious and enthusiastic team.


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