Description
Specifications Table
Product Name – Osmium, plasma standard solution, Specpure®, Os 1000µg/ml
Quantity/Pack Size – 50ml | 100ml | 500ml
Form – Liquid (1-5% HNO₃ matrix)
Grade – Specpure® (ultra-high purity, 99.999% min)
Application – ICP-OES, ICP-MS, AAS calibration; trace metal analysis in environmental/plasma samples
Product Overview
This Specpure® osmium plasma standard solution delivers 1000µg/ml concentration in a stabilized nitric acid matrix, engineered for unmatched accuracy in inductively coupled plasma (ICP) and atomic absorption spectroscopy (AAS) applications. The ultra-high purity grade (99.999% minimum) ensures interference-free detection of osmium at trace levels, with certification traceable to NIST SRM standards and an expanded uncertainty of less than 0.5%. The solution’s homogeneous composition eliminates precipitation risks, while the amber glass packaging with PTFE-lined caps prevents contamination or evaporation during storage. Each batch undergoes multi-point calibration verification using high-resolution ICP-MS, guaranteeing consistency across analytical runs. The 1-5% HNO₃ matrix is optimized for compatibility with most plasma instruments without requiring additional dilution for routine calibration curves. Ideal for laboratories demanding reproducible results in complex matrices, this standard adheres to ISO 17034 and ISO Guide 31 reference material protocols, with a 24-month shelf life when stored at 15-25°C.
FAQs
1. What is the exact nitric acid concentration in this osmium standard?
The matrix contains 1-5% ultra-pure nitric acid (HNO₃), specifically balanced to maintain osmium stability while minimizing spectral interferences during plasma analysis. The precise concentration is batch-specific and detailed in the certificate of analysis.
2. Can this standard be used directly for ICP-MS without further dilution?
For most ICP-MS instruments, this 1000µg/ml solution requires dilution to avoid detector saturation. A typical working range for osmium in ICP-MS is 0.1-10µg/L, so a 1:10,000 to 1:100,000 dilution with 2% HNO₃ is recommended. Always verify instrument-specific linear ranges.
3. How does the Specpure® grade differ from standard analytical grades?
Specpure® standards undergo additional purification steps to remove metallic and anionic contaminants below 10ppt levels, with certified impurity profiles for 70+ elements. Unlike general analytical grades, they include lot-specific interference spectra data and are produced in cleanroom environments to prevent particulate contamination.
4. What are the storage requirements to maintain certification validity?
Store unopened bottles at 15-25°C in the original amber glass container, away from direct light and oxidative gases. Once opened, reseal immediately with the PTFE-lined cap and use within 6 months. Avoid freezing, as this may alter the matrix viscosity and compromise homogeneity.
5. Is this standard compatible with organic solvent-based sample preparations?
The aqueous nitric acid matrix is not miscible with organic solvents like toluene or xylene. For organic sample analysis, prepare a secondary standard by diluting this solution into a compatible solvent (e.g., 5% HNO₃ in methanol) and re-validating the concentration via reverse ICP-OES.
