Avantor offers iodine flasks for the determination of total iodine values in fatty acids and oils and the analysis of dry shellac and shellac varnishes. Conical glass flasks with glass or PTFE stoppers feature wide collars that serve as funnels. Select a model constructed in a specially designed mold to promote proper contour and uniformity. Iodine determination flasks are offered in a variety of capacities and may be purchased individually or in cases.