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Reducing laboratory plastic waste: reuse of consumable pipette tips for trace chemical analysis.
Summary
Scientists have developed a cleaning method that lets labs safely reuse plastic pipette tips (small plastic nozzles used to measure liquids) instead of tossing them after one use, cutting down on plastic waste and carbon emissions. This matters because labs generate huge amounts of single-use plastic waste, and less plastic waste means fewer plastics ending up in landfills, waterways, and eventually breaking down into microplastics that can enter our food and water supply. The catch: reuse only works well for certain chemical tests, so labs need to check it's right for their specific work before adopting it.
Plastic pollution in laboratories is a global issue, driven largely by the widespread use of single-use plastic consumables. This Technical Brief presents a step-by-step protocol for reusing pipette tips in trace chemical analysis. It guides users through solvent selection, cleaning procedures and performance evaluation to minimise contamination and tip degradation. The integrated life cycle assessment (LCA) tool allows quantification of environmental benefits, helping users determine when reuse is advantageous. While reuse can substantially reduce plastic waste and carbon emissions, its effectiveness depends on analyte properties and cleaning protocols. This Brief supports sustainable and reliable laboratory practices.