Selecting between RoHS Cup LN and Eco Cup LF

Importance of Selecting Appropriate Sample Cups

In pyrolysis-based analysis methods, the choice of sample cups can greatly influence analytical accuracy, contamination levels, and operational efficiency. Optimizing cup materials and surface treatments ensures reliable quantification of target compounds such as phthalates and brominated flame retardants.

Objectives and Overview

This application note outlines criteria for selecting between two stainless steel pyrolysis sample cup series—RoHS Cup LN and Eco-Cup LF—when using the Frontier Labs Auto-Shot Sampler with Pyrolyzer. The comparison focuses on analytical targets including phthalates, polymers, and additives.

Methodology and Instrumentation

The evaluation considered cup deactivation status, reuse potential, and material compatibility with target analytes. Both series share identical dimensions (8 mm height, 4 mm outer diameter, 80 µL volume). Recommendations were tailored based on surface treatment and intended use.

Instrumentation Used

• Frontier Labs Auto-Shot Sampler
• Frontier Labs Pyrolyzer

Key Findings and Discussion

• RoHS Cup LN: non-deactivated, single-use; ideally suited for phthalate analysis to minimize background contamination.
• Eco-Cup LF: surface-deactivated, reusable; disposable use recommended for brominated flame retardant studies and polymer/additive screening.

Both cup types are stainless steel, ensuring thermal stability and chemical resistance. Bulk packaging options provide cost benefits for large-scale operations.

Benefits and Practical Applications

• Enhanced analytical selectivity by matching cup surface treatment to target compounds.
• Reduced sample carryover and contamination risks.
• Operational flexibility via reusable or disposable options.
• Cost savings through volume discounts and cup reusability.

Future Trends and Potential Applications

Advancements may include development of specialized cup coatings for emerging analytes, integration with automated sampling workflows, and expansion of cup geometries to accommodate larger sample volumes or complex matrices.

Conclusion

Proper selection between RoHS Cup LN and Eco-Cup LF enhances pyrolysis analysis performance by aligning cup properties with analytical objectives, ensuring both data integrity and cost-effectiveness.