Description
Specifications Table
Product Name – Chromate (in Cr VI), 1000 mg/L in water Ion chromatography standard
Quantity/Pack Size – 100 ml
Form – Liquid (aqueous solution)
Grade – Analytical standard
Application – Ion chromatography, environmental analysis
Product Overview
This Chromate (Cr VI) 1000 mg/L aqueous standard solution is meticulously prepared for high-precision ion chromatography applications. Formulated with ultra-pure reagents and deionized water, it ensures minimal matrix interference and maximum accuracy in trace hexavalent chromium analysis. The solution is stabilized to prevent degradation and comes in a high-density polyethylene bottle with tamper-evident sealing to maintain integrity during storage and transport. Each batch undergoes rigorous quality control, including ICP-MS verification, to guarantee concentration accuracy within ±1% tolerance. The standard is traceable to NIST reference materials, making it suitable for regulatory compliance testing in environmental monitoring, industrial effluent analysis, and research laboratories. Its extended shelf life of 24 months when stored at 2-8°C reduces replacement frequency while maintaining consistent performance. The solution’s low background conductivity (<5 µS/cm) eliminates the need for additional purification steps, saving valuable lab time. Compatible with all major ion chromatography systems, this standard delivers reproducible results across different instrument configurations.
FAQs
1. What is the exact chromium species in this standard solution?
The standard contains hexavalent chromium exclusively in the chromate (CrO₄²⁻) form, verified through spectrophotometric analysis at 372 nm.
2. Can this standard be used for ICP-OES or AAS analysis?
While optimized for ion chromatography, the solution’s known concentration makes it suitable for ICP-OES calibration, though matrix matching may be required for AAS applications.
3. What is the recommended dilution protocol for working standards?
Serial dilution using 18 MΩ/cm deionized water is recommended, with a maximum 1:100 dilution ratio to maintain solution stability and accuracy.
4. How does the packaging prevent contamination during storage?
The HDPE bottle features a PTFE-faced septum and screw cap with an integrated silicone liner to prevent atmospheric contamination and volatile losses.
5. What documentation is provided with each batch?
Every shipment includes a certificate of analysis with concentration values, uncertainty statements, expiration date, and storage instructions in both digital and printed formats.
