In materials and fuels testing, long-standing ISO and ASTM methods still drive much of the daily workload. Polyethylene terephthalate (PET) and resin extractions on Soxhlet cycles, elemental analysis of challenging polymers, sulfur in coal, and nitrogen in engine oil all deliver reliable data—but at a cost. Long cycles tie up systems, solvent goes unrecovered, catalysts wear out early, and matrix effects force rework.
This compendium offers seven tested approaches that match method to material. Each workflow is tuned to the sample’s matrix, replacing one-size-fits-all SOPs with sustainable practices that improve accuracy and uptime.
Inside the compendium:
- PET oil determination with Randall extraction – Replace long Soxhlet cycles with unattended runs and recover up to 90% of solvent in-system
- Rubber resin content analysis – Compare Randall and Soxhlet methods to cut extraction time up to five-fold and reduce solvent exposure
- High-fluorine polymer analysis – Apply targeted CHNS precautions to stabilize sulfur results and extend catalyst and reaction-tube life to ~200 analyses
- Coal carbon–sulfur testing – Complete to international (DIN) and ASTM standards in about 12 minutes per sample
- Engine oil nitrogen determination – Use Kjeldahl analysis within the 0.015–2.0% N range to meet ASTM compliance while maintaining steady throughput
- Bioplastic CHN/O characterization – Document the composition of renewable-source polymers with reproducible parameters for R&D and QC
- Viton and other fluoroelastomers – Optimize CHNS/O settings for consistent multi-element analysis in demanding elastomer samples
Choose the right method. Tune it to your sample. Then watch your costs, cycle times, and solvent use fall into line.
