Description
Specifications Table
Product Name – Tungsten, plasma standard solution, Specpure®, W 1000µg/ml
Quantity/Pack Size – 50ml, 100ml, 500ml
Form – Liquid (aqueous solution)
Grade – Specpure® (ultra-high purity, ≥99.999%)
Application – ICP-OES, ICP-MS, AAS, trace metal calibration, plasma spectroscopy
Product Overview
This Specpure® tungsten plasma standard solution delivers a certified concentration of 1000µg/ml in a stabilized aqueous matrix, engineered for unmatched accuracy in spectroscopic applications. The ultra-high-purity grade (≥99.999%) eliminates matrix interferences, ensuring reliable calibration curves and minimal background noise in ICP-OES, ICP-MS, and atomic absorption spectroscopy (AAS). Each batch undergoes rigorous multi-element analysis to guarantee traceability and lot-to-lot consistency, with certificates of analysis provided for compliance with ISO 17025 standards. The solution’s low-acid formulation (typically <2% HNO₃) extends shelf life while maintaining solubility, reducing the risk of precipitation or container leaching. Housed in HDPE bottles with tamper-evident seals, it resists contamination from ambient moisture or particulate matter. The 1000µg/ml concentration allows for flexible dilution without compromising detection limits, making it ideal for both routine quality control and high-sensitivity research. Compatible with most autosamplers and nebulizers, this standard solution integrates seamlessly into automated workflows, reducing manual errors. Its stability at room temperature (when stored properly) minimizes the need for cold-chain logistics, lowering operational costs without sacrificing performance.
FAQs
1. What is the shelf life of this tungsten plasma standard solution when unopened?
The unopened solution remains stable for 24 months from the date of manufacture when stored at 15–25°C in its original packaging. Avoid exposure to direct sunlight or temperature fluctuations.
2. Can this standard be used for both ICP-OES and ICP-MS without additional preparation?
Yes, the 1000µg/ml concentration is optimized for direct use in ICP-OES and can be diluted for ICP-MS applications. However, for ultra-trace analysis, further dilution with high-purity acids (e.g., 2% HNO₃) may be required to match instrument sensitivity.
3. What materials are the bottles made of, and are they compatible with HF or other aggressive acids?
The bottles are HDPE (high-density polyethylene), which is resistant to most dilute acids including HNO₃ and HCl. However, HF or concentrated sulfuric acid may degrade the container; transfer to PTFE or PFA vessels if such acids are involved.
4. Is this solution certified for pharmaceutical or environmental testing compliance?
While the Specpure® grade meets ISO 17025 traceability requirements, it is not pre-certified for specific regulatory frameworks like USP or EPA methods. For compliance-critical applications, validate against your lab’s internal protocols or reference materials.
5. How does the Specpure® grade differ from standard analytical-grade tungsten solutions?
Specpure® undergoes additional purification steps to remove metallic and anionic impurities (e.g., <10 ppb for most contaminants), whereas analytical-grade solutions may contain higher background levels. This makes Specpure® ideal for sub-ppb detection limits in high-resolution spectroscopy.
