title: Necessity of prerinsing disposable polypropylene pipet tips.
mesh_terms: D002250:Carbon Radioisotopes; D002784:Cholesterol / Q000032:analysis; D004209:Disposable Equipment; D005069:Evaluation Studies as Topic; D005971:Glutamates / Q000032:analysis; D008722:Methods; D010969:Plastics; D014050:Toluene / Q000032:analysis
chemical_list: D002250:Carbon Radioisotopes; D005971:Glutamates; D010969:Plastics; D014050:Toluene; D002784:Cholesterol