Accurate and reliable results are the lifeblood of any chemical analysis. Employing reference materials in research and quality control (QC) processes is, subsequently, a significant consideration. Dive into this comprehensive guide that explores the differences between primary certified reference materials (PCRMs) and certified reference materials (CRMs) while highlighting their indispensable role in ensuring precision, comparability, and repeatability of analytical measurements. Boost the integrity of your testing methods and stay ahead in the world of analytical chemistry.
What are Primary Certified Reference Materials (PCRMs)?
PCRMs are standards of ultra-high purity that have been tested extensively for their homogeneity, purity, and stability. They are traceable directly to the International System of Units (SI) by a direct measurement method. PCRMs are among the highest level of reference standards available for quality assurance and calibration in many scientific fields, including chemistry, engineering, and physics. PCRMs are comparable to reference materials produced by National Metrology Institutes such as NIST.
How Reference Materials Affect Sample Preparation
Sample preparation is crucial for analyzing, identifying, and measuring samples in various scientific fields. In analytical chemistry, reference materials (RMs) are essential to ensure the accuracy and reliability of analytical measurements.
The importance of using RMs in sample preparation includes the following points:
- Accuracy of measurements
- Help meet regulatory requirements
- Support if errors occur
- Traceability of a sample
- Used for multiple applications (calibration, quantification, and verification)
Primary Certified Reference Materials (PCRMs) vs. Certified Reference Materials (CRMs)
In analytical testing, reference materials are used for calibration, quantification, and verification. PCRMs occupy the highest rung in the hierarchy of reference materials, while CRMs are a rung down from PCRMs.
Key advantages of PCRMs:
- Highest level of accuracy, uncertainty, and traceability to an SI unit of measurement
- Compliant with ISO requirements
Key advantages of CRMs:
- Significantly easier to produce
- Cost-effective alternative to PCRMs for less exacting requirements on traceability
What Sets Inorganic Ventures Standards Apart?
We have been manufacturing and supplying a range of reference materials since 1985. With over 55,000 approved blends available as stock reference, we have an extensive range of reference materials suitable for techniques such as ICP, ICP-MS, atomic absorption, and wet chemistry.
Inorganic Ventures' reference materials comply with ISO 17034 & ISO 17025 guidelines (A2LA 883.01 & 883.02), ensuring adherence to the highest standards. Our materials are SI traceable, providing the utmost level of accuracy for your scientific testing needs. With our expertise in creating and applying both certified primary reference materials (PCRMs) and certified reference materials (CRMs), you can be confident that our products will meet the demanding requirements of various analytical applications.
Choosing the Right Reference Material
When looking for both primary certified reference materials or certified reference materials, there can almost be an overwhelming amount of choice. We can guide you through the process to find the perfect reference for your application. Here are a few key factors to consider when choosing reference materials:
- Single or multi-element standards
- Correct concentrations and conditions
- Custom standards for specific needs
Contact us today to see how your quality control could be significantly enhanced with the right choice of reference materials.