Vitamin K2 (MK-4), also known as menaquinone-4, is a fat-soluble vitamin K isoform involved in blood coagulation pathways, bone metabolism, and regulation of vitamin K-dependent proteins. This certified reference material (CRM) is supplied as a single-component solution in acetonitrile for use in quantitative analytical applications.

The standard is suitable for instrument calibration, method validation, accuracy checks, and ongoing analytical quality control in vitamin K2 testing workflows. It is commonly used in clinical research, nutritional analysis, pharmaceutical quality testing, and food or supplement analysis where precise quantification of menaquinone-4 is required. The solution format enables direct use or dilution for calibration curve preparation in chromatographic methods including LC-MS/MS, HPLC, GC, or LC-based assays.

This certified reference material is supplied with a certificate of analysis providing traceable concentration values suitable for calibration, method validation, and analytical quality control.

Shipping and Storage Notice
Please note that shipping and long-term storage conditions for certified reference materials may differ. Manufacturers determine the most appropriate shipping method based on product stability and shipping data. Some CRM standards may ship at ambient temperature even though recommended long-term storage conditions are refrigerated or frozen. This does not affect product integrity when handled according to manufacturer documentation
Vitamin D3 standards are commonly used for quantification of vitamin content in dietary supplements, fortified foods, biological samples, and pharmaceutical formulations. The material is suitable for chromatographic techniques including gas chromatography (GC) and liquid chromatography (LC), supporting accurate measurement of vitamin D levels across a range of testing applications.

This CRM is provided in a sealed 1 mL ampule and manufactured by Cerilliant®, with traceable concentration values documented in the accompanying certificate of analysis. It is appropriate for laboratories requiring reliable reference standards for regulatory compliance, clinical testing, and research.

This certified reference material is supplied with a certificate of analysis providing traceable concentration values suitable for calibration, method validation, and analytical quality control.

Shipping and Storage Notice
Please note that shipping and long-term storage conditions for certified reference materials may differ. Manufacturers determine the most appropriate shipping method based on product stability and shipping data. Some CRM standards may ship at ambient temperature even though recommended long-term storage conditions are refrigerated or frozen. This does not affect product integrity when handled according to manufacturer documentation.