Stranaska LLC
A commemorative series of spectrophotometric calibration artifacts has been developed in tribute to Dr. Radu Mavrodineanu, the "founding father" of the contemporary NIST high-accuracy spectrophotometry program.
Molecular absorption spectrophotometry is a vital tool in analytical research, quality control, and manufacturing-support laboratories. The assurance of accurate spectrophotometric data relies on various validation measures including science-based procedures to demonstrate that the spectrophoto-meter is functioning properly and within specification for its intended use. Primary spectrophotometric Standard Reference Material (SRM) artifacts from the National Institute of Standards and Technology (NIST) serve as the traditional benchmark for this purpose. Additionally, these SRM artifacts provide the primary means of traceability linkage for secondary spectrophotometric artifacts produced by commercial suppliers.
The current array of primary spectrophotometric SRMs is an extension of the high-accuracy spectrophotometry program that originated in 1969 within the Center for Analytical Chemistry of NIST, known at that time as the National Bureau of Standards (NBS). For more than 25 years, the overall success of this program can be attributed to the technical vision, leadership, and pioneering accomplishments of Dr. Radu Mavrodineanu, a renowned analytical spectroscopist and scientist (1). Included among his many valuable contributions to this program are the original SRMs developed for wavelength accuracy, transmittance and absorbance accuracy, and stray radiant energy in the ultraviolet (UV) and visible (VIS) regions of the electromagnetic spectrum.
To continue the legacy of Dr. Mavrodineanu, or Mavro, as he was known to many of his close friends and colleagues, Stranaska is proud to introduce its new Vintage MAVRO Series. This commemorative series is an integral part of the company's expanding product line of secondary calibration artifacts for analytical metrology (CA2M). Produced on demand and in limited quantities only, the Vintage MAVRO Series is comprised of the company's top ten CA2M products for the definitive calibration of UV/VIS absorption spectrophotometers. Included in the series are eight photometric artifacts, one wavelength artifact, and one stray radiant energy artifact; the eight photometric artifacts are subdivided into five solid CA2M artifacts and three liquid CA2M artifacts. Each of the ten secondary CA2M products comprising the Vintage MAVRO Series is meticulously patterned after or derived from a corresponding primary spectrophotometric NIST SRM artifact (see Table I).
Table I. Vintage MAVRO Series of Spectrophotometric Calibration Artifacts
(1) J. Messman, "Historical Review of Standard Reference Materials for Analytical Spectrophotometry – A Tribute to Dr. Radu Mavrodineanu," Poster Paper Number 1 presented at Federation of Analytical Chemistry & Spectroscopy Societies 30th Annual Meeting, Fort Lauderdale, Florida, 19 October 2003.
Stranaska LLC
4025 Automation Way, Building A, Fort Collins, CO 80527
Tel. (970) 282-3840, Fax (970) 282-7040
Single Cell and Microplastic Analysis by ICP-MS with Automated Micro-Flow Sample Introduction
April 25th 2024Single cell ICP-MS (scICP-MS) is increasingly seen as a powerful and fast tool for the measurement of elements in individual cells, mainly due to the high sensitivity and selectivity of ICP-MS. Analysis is performed in the same way as single nanoparticle (spICP-MS) analysis, which has become a well-established technique for the analysis of nanoparticles and particles.
Hot News on Agilent LDIR, New Developments, and Future Perspective
April 25th 2024Watch this video featuring Darren Robey and Dr. Wesam Alwan from Agilent Technologies to gain insights into the future trends shaping microplastics research and the challenges of their characterization. Discover the essential components necessary for accurate microplastics analysis and learn how the Agilent 8700 LDIR system addresses these challenges. Offering rapid and precise analysis capabilities, along with easy sample preparation methods that minimize contamination, the Agilent 8700 LDIR system is at the forefront of advancing microplastics research.
Accurate and robust analysis of challenging environmental samples for regulatory compliance
April 25th 2024This application note discusses how the adverse effects of sample matrix can be circumvented with an analytical workflow that includes robust ICP-MS instrumentation offering comprehensive yet simplified analysis of samples containing high dissolved solids such as soil digests, wastewater and solid wastes. The data presented in this application note was generated over 12 hours with over 160 samples covering soil extracts and a variety of water samples.
Analysis of drinking water in compliance with EPA Method 200.8, Revision 5.4
April 25th 2024This application note describes the analytical workflow developed for the analysis of water samples over an extended period using the latest innovations in ICP-MS instrumentation. The innovations specifically highlighted in this app note are the next generation Argon Gas Dilution accessory, which simplifies the analysis of high matrix samples allowing direct analysis without prior manual diution; the HAWK consumables and maintenance assistant within the Qtegra ISDS software; the new Easy-click compact (ECC) peristaltic pump; and the new Thermo Scientific autosampler, the iSC-65 autosampler.