CRM Tin (Sn) - Aqueous calibration solution ASTASOL® AN90551C

Aqueous Calibration Solution ASTASOL® AN90551C for Tin (Sn) Determination

Importance of the Topic

Calibration solutions with certified values are essential for ensuring accuracy and comparability across laboratories in elemental analysis. A high-purity tin standard supports reliable quantification in techniques such as AAS, ICP-OES and ICP-MS, which are critical in environmental monitoring, industrial quality control and research applications.

Objectives and Study Overview

This certificate describes the preparation, certification and characterization of an aqueous calibration solution of tin at nominal 1 000 mg/L concentration. It aims to provide users with a traceable reference material for method calibration and validation, following ISO Guide 31 and ISO 17034 requirements.

Methodology and Instrumentation

The solution is produced by gravimetric weighing of 99.999 % pure metallic tin, dissolved in 10 % hydrochloric acid. SI traceability is ensured by direct mass measurements and verification by complexometric titration against NIST SRM 928. Trace impurities were assessed by atomic absorption spectrometry (AAS), inductively coupled plasma optical emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS).

Used Instrumentation

• High-precision analytical balance for gravimetric preparation
• Complexometric titration apparatus
• AAS systems
• ICP-OES instruments
• ICP-MS instruments

Main Results and Discussion

The certified concentration of tin is 1 000 ± 2 mg/L (k=2) at 20 °C, with corresponding mass fraction of 982 ± 3 mg/kg derived from density (1.0188 ± 0.0005 g/cm3). Trace elements are all below detection limits or reported at sub-µg/L levels, confirming high purity. Homogeneity and stability assessments guarantee consistent performance over a 5-year shelf life when stored at 5–30 °C and used within 12 months after opening.

Benefits and Practical Applications

This certified solution allows accurate calibration of atomic and molecular spectrometric methods and selected electroanalytical techniques. It supports quality assurance and compliance with regulatory requirements in environmental testing, food safety, metallurgy and pharmaceutical analysis.

Future Trends and Opportunities

Advances in reference material production point toward digital certification, on-demand synthesis of multi-element standards and integration of smart packaging to monitor storage conditions. The extension to environmentally relevant matrices and lower concentration levels will further broaden application scope.

Conclusion

ASTASOL® AN90551C offers a highly pure, SI-traceable calibration solution for tin analysis, backed by rigorous certification and stability data. Its reliable performance enhances analytical accuracy and method validation across diverse fields.

Reference

• ISO Guide 31, Reference materials — Contents of certificates, labels and accompanying documentation
• ISO 17034:2017, General requirements for the competence of reference material producers
• NIST SRM 928, Tin Standard for Complexometric Titration