Nu Instruments | Astrum GD-MS Precision and Accuracy Over Four Years for Nickel Alloy Analysis
This application note demonstrates the long-term precision and accuracy of the Astrum GD-MS instrument using a certified nickel alloy reference material. Results collected over four years highlight consistent reproducibility across different instruments, users and sample batches. The study confirms reliable ultra-trace analysis with minimal calibration requirements.
The Astrum GD-MS is designed for ultra-trace elemental analysis, combining proven GD-MS design with advancements in sample cell engineering, electronics and pumping systems. It delivers high sensitivity, stable performance and the flexibility to handle a wide range of material matrices.
To assess long-term performance, a certified nickel alloy reference material (BAS 346A) was analysed repeatedly over four years. Measurements were carried out on multiple instruments by different operators under routine conditions. The study simulated real-world use, including regular maintenance and sample preparation, ensuring results reflect practical laboratory environments.
The results show excellent reproducibility across all test conditions, with consistent data quality achieved without frequent recalibration. Additional accuracy, within approximately ±10%, was obtained by applying a unified calibration approach across all instruments. This highlights the robustness and reliability of the Astrum GD-MS for long-term, high-precision applications.
Key Takeaways:
- Astrum GD-MS delivers highly reproducible results across multiple instruments, users and years of operation.
- Reliable trace element analysis can be achieved without frequent recalibration.
- Consistent accuracy within ±10% is possible using a unified calibration approach.
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