Description
Specifications Table
Product Name – Selenium, plasma standard solution, Specpure®, Se 10,000µg/ml
Quantity/Pack Size – 50ml, 100ml, 500ml
Form – Liquid solution
Grade – Specpure® (ultra-high purity)
Application – ICP-MS, AAS, atomic spectroscopy, plasma calibration
Product Overview
This Specpure® selenium plasma standard solution delivers 10,000µg/ml concentration with exceptional purity, specifically formulated for demanding analytical applications. The solution is prepared using ultra-high purity selenium (99.999% minimum) dissolved in a stabilized nitric acid matrix (2-5% HNO₃), ensuring long-term stability and minimal matrix interference. Each batch undergoes rigorous multi-point calibration against NIST-traceable reference materials, guaranteeing ±0.5% accuracy for critical measurements. The Specpure® grade eliminates common contaminants like heavy metals (Pb, Cd, Hg <1ppb) and alkali/alkaline earth metals (Na, K, Ca, Mg <5ppb), making it ideal for ultra-trace analysis in complex matrices. Packaged in HDPE bottles with tamper-evident seals, the solution maintains integrity during storage and transport. The low-particulate formulation (≤0.2µm filtered) prevents instrument clogging in ICP-MS systems while the acid matrix ensures complete selenium solubility. Compatible with most autosamplers and dilution systems, this standard requires no additional preparation for immediate use in calibration curves or quality control protocols.
FAQs
1. What is the shelf life of this selenium plasma standard solution when stored properly?
The solution remains stable for 24 months from the date of manufacture when stored unopened at 15-25°C in its original container. Once opened, use within 6 months for optimal accuracy.
2. Can this standard be used directly for ICP-OES analysis without further dilution?
For most ICP-OES applications, this 10,000µg/ml concentration will require dilution. Typical working ranges for selenium in ICP-OES are 1-100µg/ml, so a 1:100 to 1:1000 dilution would be appropriate depending on your instrument’s linear range.
3. What materials are the bottles and caps made from to prevent contamination?
The bottles are manufactured from high-density polyethylene (HDPE) with polypropylene (PP) caps, both tested for ultra-low metal leaching. The materials meet Class 100 cleanroom standards for trace metal analysis.
4. How does the Specpure® grade differ from standard analytical grade selenium solutions?
Specpure® grade undergoes additional purification steps including sub-boiling distillation and ion exchange chromatography to achieve lower impurity levels. Standard analytical grade typically contains 10-100x higher levels of metallic contaminants and may use lower purity starting materials.
5. What safety precautions should be taken when handling this concentrated selenium solution?
Always handle in a fume hood wearing nitrile gloves, safety goggles, and lab coat. The solution contains nitric acid (2-5%) which is corrosive. In case of skin contact, rinse immediately with copious amounts of water and seek medical attention if irritation persists.
