Diffusion testing is a release rate test of an active pharmaceutical ingredient in semisolid form as it permeates through a skin-like membrane into solution. Diffusion replicates the process of skin-applied medicine as it permeates the skin into the body for local or systemic action. It is ideal for the quality control of topical preparations. Semisolid preparations such as creams, ointments, and gels must penetrate the layers of the skin to have benefit.

Setting The Standard since 1951. When Teledyne Hanson Research built the first dissolution tester, they didn’t realize they were laying the foundation of modern quality testing for pharmaceuticals. Here we are half a century later, pioneering the next generation of equipment that will keep tomorrow’s medication safe and effective.​

The Disi AutoSense™ from Teledyne Hanson Research delivers fully automated disintegration testing in compliance with USP <701> and <2040> and their harmonized EP and JP methods. Designed for precision, productivity, and ease-of-use, the Disi AutoSense provides a fast, low- maintenance solution for disintegration labs conducting tests in new product development and batch/lot manufacturing facilities.

​The Vision G2 Classic 6 is a compact, rugged workhorse Vision G2 Classic 6 ​The Vision G2 Classic 6 is a compact, rugged workhorse ideal for manual testing. The Classic 6 is precision engineered for USP Dissolution, and includes a unique award-winning footprint designed for saving space and ease of use. Features include a Vision

The Vision G2 Elite 8 is a modern successor Vision G2 Elite 8 The Vision G2 Elite 8 is a modern successor to the popular Hanson SR8-Plus. The G2 Elite 8 is a versatile performance machine, built for automation and extended applications. Features include a Vision heater system, molded waterbath, 8-position Easi- Lock vessel plate, Easi-Lift

The Vision G2 AutoPlus autosampler and AutoFill collector take the next step in dissolution automation with a streamlined design and increased functionality. The G2 AutoPlus comes with a choice of 6 sampling channels DissoScan (1-bath) or Maximizer (multi-bath & multi-routine) 8 sampling channels configuration. Precision syringe pump mechanics, all-inert tubing and valves, and color touchscreen programming with up to 100 protocols are standard on each instrument.