Description
Specifications Table
Product Name – Nitrate, Ion chromatography standard solution, Specpure®, NO3– 1000µg/ml
Quantity/Pack Size – 100ml, 500ml
Form – Liquid (aqueous solution)
Grade – Specpure® (ultra-high purity)
Application – Ion chromatography calibration, nitrate quantification, environmental testing
Product Overview
This Specpure® nitrate (NO3–) standard solution delivers 1000µg/ml concentration in a matrix-optimized aqueous formulation, designed specifically for ion chromatography applications where accuracy and reproducibility are critical. The ultra-high purity grade minimizes matrix interferences, ensuring reliable calibration curves and trace-level detection in complex samples. Each batch undergoes rigorous multi-point verification against NIST-traceable reference materials, with certified values provided for nitrate content. The solution’s stability is enhanced through pH buffering and preservative additives, maintaining concentration integrity for up to 24 months when stored as directed. Packaged in HDPE bottles with tamper-evident seals, the solution resists leachables and gas permeability that could compromise low-level analysis. The 100ml and 500ml pack sizes accommodate both routine QC checks and high-throughput laboratory workflows, while the color-coded label system simplifies inventory management in multi-analyte labs.
FAQs
1. What is the shelf life of this NO3– 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, protected from light exposure.
2. Can this standard be used for ICP-OES or AAS nitrate analysis?
While optimized for ion chromatography, the solution’s matrix composition is compatible with ICP-OES/AAS after appropriate dilution, though you may need to account for potential spectral interferences from the preservative system.
3. What dilution protocol is recommended for preparing 100ppm working standards?
For 100ppm (100,000ppb) working standards, perform a 1:10 dilution using 18.2MΩ/cm deionized water: combine 1ml of this 1000µg/ml stock with 9ml of diluent in a Class A volumetric flask.
4. How does the Specpure® grade differ from standard ACS reagent grade?
Specpure® undergoes additional purification steps to reduce trace metal contaminants (e.g., <0.1ppb for Fe, Cu, Zn) and organic carbon levels, with tighter certification limits for anion interferences like chloride and sulfate.
5. What’s the typical uncertainty value for the certified nitrate concentration?
The expanded uncertainty (k=2) for the 1000µg/ml certification is ±1.5%, as detailed in the included Certificate of Analysis with full measurement traceability.
