VHG has manufactured single and multi-element standards (both aqueous and oil-based) for more than 30 years, including petroleum standards, analytical reference standards for new and in-service oil applications, and standards for ASTM, DIN, IP, ISO, JIS and ANFOR methods, including EPA Tier 3. We also offer proficiency testing and specialise in custom blends.
Each of our products must pass rigorous quality control in our ISO/IEC 17025-certified laboratory, with many also individually accredited to ISO 17034, and all standards ship with a comprehensive Certificate of Analysis. We verify against the appropriate NIST SRM (when available), and calibrate equipment according to NIST procedures, to support your testing accuracy.
Since 1975, Dr. Ehrenstorfer has led the way in producing pesticide reference standards. Today, our portfolio is constantly expanding to adapt to changing regulations and technology, as we support your need for high-quality reference materials for food and environmental analysis.
We are passionate about supporting your science for a safer world. Our products are produced to the highest quality, with all analytical measurements performed under our ISO/IEC 17025 scope of accreditation and a leading product range manufactured according to our ISO 17034 accreditation. We use the most advanced analytical techniques to characterise our reference materials, so that you can rely on the scientific integrity of the data contained in your Certificate of Analysis.
At Mikromol, we go beyond the standard to produce high-quality, globally relevant pharmaceutical reference standards that you can trust. For more than 25 years we have delivered quality reference standards for analytical development, method validation, and stability and release testing to customers around the world.
Alongside a market-leading product range accredited to ISO 17034, the majority of our 5,000+ impurity, API and excipient reference standards are manufactured under ISO/IEC 17025 and accompanied by an extensive Certificate of Analysis.
With unparalleled depth of knowledge, decades of manufacturing experience and unrivalled scientific excellence, we work tirelessly to help you create ever better, safer medicines.