title: Preliminary collaborative study of modified spectrophotometric determination of pyrantel tartrate in swine feeds by the method of standard additions.
abstract: A modified spectrophotometric method for determining pyrantel tartrate in swine feeds was subjected to a preliminary collaborative study. Two small-scale commercial pyrantel-medicated feed samples (0.0881 and 0.0106%) were assayed in replicate by 4 collaborators. The mean results of all laboratories were 0.0862 and 0.0112%. The mean coefficients of variation were 10.57 and 6.48%, repectively. Suggestions for improving recovery include the following: complete dissolution of standard, use of analytical grade KI, careful phase separation, thorough mixing, and minimum exposure of compound to light.
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D011715:Pyrantel / Q000031:analogs & derivatives*; D011717:Pyrantel Tartrate / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods; D013552:Swine
chemical_list: D011715:Pyrantel; D011717:Pyrantel Tartrate