Description
Specifications Table
Product Name – Potassium, plasma standard solution, Specpure®, K 10,000µg/ml
Quantity/Pack Size – 50ml, 100ml, 500ml
Form – Liquid (aqueous solution)
Grade – Specpure® (ultra-high purity)
Application – ICP-OES, AAS, plasma spectrometry calibration
Product Overview
This Specpure® potassium plasma standard solution delivers 10,000µg/ml of ultra-pure potassium in a stabilized aqueous matrix, engineered for high-accuracy plasma spectrometry applications. The solution is prepared using Specpure® reagents, ensuring minimal trace metal contamination (<10ppb for most interferents) and exceptional batch-to-batch consistency. Its nitric acid-based formulation (2-5% v/v) prevents precipitation while maintaining long-term stability, with a shelf life of 24+ months when stored properly. The concentration is certified via gravimetric preparation and validated against NIST-traceable reference materials, providing documented accuracy within ±0.5%. Packaged in HDPE bottles with tamper-evident seals, this standard eliminates the need for in-house dilution for most routine analyses. The solution’s low viscosity and surface tension characteristics ensure optimal nebulization efficiency in ICP-OES systems, while its matrix composition mimics real-world plasma conditions to reduce calibration errors. Each batch undergoes rigorous testing for homogeneity, with certified values provided for potassium and 12 common interferents.
FAQs
1. What is the matrix composition of this potassium standard solution?
The solution uses a 2-5% v/v nitric acid matrix, which provides stability for the potassium while minimizing spectral interferences during plasma analysis. The exact acid concentration is optimized to balance solubility and instrument compatibility.
2. Can this standard be used directly for ICP-MS analysis?
While primarily designed for ICP-OES, this 10,000µg/ml solution can be used for ICP-MS after appropriate dilution (typically 1:1000 or greater) to avoid detector saturation. The Specpure® grade ensures sufficiently low background levels for most ICP-MS applications.
3. What documentation is provided with each bottle?
Every bottle includes a certificate of analysis detailing the certified potassium concentration, expiration date, storage conditions, and batch-specific data for 12 potential interferents. The certificate also provides the preparation method and traceability information.
4. How does the Specpure® grade differ from standard analytical grades?
Specpure® standards undergo additional purification steps to achieve lower background contamination (typically <10ppb for most metals) compared to standard analytical grades. The manufacturing process includes sub-boiling distillation of acids and specialized filtration to remove particulate matter.
5. What is the recommended storage temperature range?
For optimal stability, store the unopened solution between 15-25°C. Avoid freezing, as this may alter the solution’s homogeneity. Once opened, maintain the same temperature range and ensure the cap is tightly sealed to prevent evaporation or contamination.
