Description
Specifications Table
Product Name – Sulfate, Ion chromatography standard solution, Specpure®, SO₄²⁻ 1000µg/ml
Quantity/Pack Size – 100ml, 500ml
Form – Liquid (aqueous solution)
Grade – Specpure® (ultra-high purity)
Application – Ion chromatography calibration, environmental testing, water analysis
Product Overview
This Specpure® sulfate standard solution delivers exceptional precision for ion chromatography applications, formulated at a certified 1000µg/ml concentration of SO₄²⁻ in a stabilized aqueous matrix. The solution undergoes rigorous multi-stage purification to eliminate trace metallic and organic contaminants, ensuring minimal baseline interference during chromatographic runs. Its NIST-traceable certification guarantees measurement accuracy within ±1% relative standard deviation, critical for quantitative environmental analysis and regulatory compliance testing. The solution’s extended shelf life of 24 months when stored at 2-8°C is achieved through proprietary pH buffering that prevents sulfate precipitation or microbial growth. Packaged in HDPE bottles with tamper-evident seals, the standard maintains integrity during transport and storage. The ultra-low particulate formulation (≤0.2µm filtered) protects chromatography columns from fouling while delivering consistent peak shapes. Compatible with all major IC systems including Metrohm, Thermo Dionex, and Shimadzu, this standard eliminates the need for in-house preparation, reducing laboratory variability and reagent waste.
FAQs
1. What is the exact sulfate concentration tolerance for this standard?
The concentration is certified at 1000µg/ml ±1% with NIST-traceable accuracy, as verified by independent third-party testing using gravimetric and ICP-OES validation methods.
2. Can this solution be used with suppressed conductivity detection?
Yes, the ultra-low organic carbon content (<50ppb) and absence of UV-absorbing stabilizers make it fully compatible with suppressed conductivity detectors without requiring additional sample preparation.
3. How does the Specpure® grade differ from analytical reagent grade?
Specpure® undergoes additional purification steps including sub-boiling distillation and chelation chromatography to remove transition metals and organic residues that could interfere with sulfate quantification at ppb levels.
4. What’s the recommended storage protocol after opening?
After opening, store at 2-8°C in the original bottle with the cap tightly sealed. Use within 6 months of opening, and avoid repeated temperature fluctuations to prevent condensation-related dilution.
5. Are there any known matrix interferences with common anions?
The solution is tested for interference with chloride, nitrate, and phosphate at 10x concentration ratios, showing <0.3% peak area overlap when using standard IC gradient methods.
