Company Sigma-Aldrich created these great apps:
Molarity, 摩尔计算器, The Aldrich Handbook of Fine Chemicals for iPad, LabTimers, ConvertUnits - The Scientific Unit Converter, Bioanalytical, HPLC Calc, Base Invaders, Biofiles: Solutions for Neuroscience Research, Innovative Analytical Products from Supelco and Fluka, Biofiles: Solutions for Cancer Research, Biofiles: Predictive Tools for ADME and Toxicology Studies, Translational Research Solutions, Aldrichimica Acta, Tools for Mass Spectrometry, Clinical & Forensics, Material Matters, Biofiles: Screen with Confidence, Academic Research, Food Testing, Pharma Solutions, MSIG Quality, Molecular Diagnostics, Industrial, Supply Chain Solutions, SAFC, Sigma-Aldrich eCommerce, Lab Inventory Management, and others..