English
Application
The SRM is primarily intended to validate analytical methods used to determine catechins, xanthines, andtoxic elements present in solid oral dosage forms in cluding green tea and similar matrices. Additionally, it is also suitable for ensuring quality while assigning values to in-house control materials.
Features and Benefits
The certified value of the SRM was determined by calculating the mass fraction values, which were obtained through two methods:
Ultraviolet absorbance detection (UV)
Mass spectrometry (MS)
Certified and reference mass fraction values for catechin,gallocatechin, gallic acid, theanine, and other elements are provided on a dry-mass basis and values are metrologically traceable to the SI unit of mass expressed as micrograms per gram.
The NIST certificate is provided with expiration certificate, storage, handling, use,and maintenance instructions.
General description
One unit of SRM 3256 contains five packets of powdered material, each containing approximately 2.5 g.
SRM 3256_cert
SRM 3256_SDS
Other Notes
Certified for the analytes listed below. See certificate for values and more details
Phytochemicals: (–)-Epicatechin, (–)-Epicatechin gallate, (–)-Epigallocatechin, (–)-Epigallocatechin gallate, (–)-Gallocatechin, (–)-Gallocatechin gallate, (–)-Gallocatechin gallate, (+)-Catechin, caffeine, Gallic acid, L-Theanine, Theobromine, Theophylline
Trace Metals: Arsenic (As), Cadmium (Cd), Lead (Pb), Mercury (Hg)
Matrix Group: Botanicals
Legal Information
NIST is a registered trademark of National Institute of Standards and Technology
SRM is a registered trademark of National Institute of Standards and Technology
