The Elcometer 2351 FORD/ASTM Viscosity Flow Cups are very easy to use instruments made of anodized aluminium with a stainless steel orifice, for measuring the consistency of paints, varnishes and similar products. The measured kinematic viscosity is generally expressed in seconds(s) flow time. If the Standards stipulate conversion methods the flow time can be converted into Centistokes (cSt) using the Elcometer ElcoCalc Mobile Apps. ElcoCalc is free software that is available on Android and the App Store. Compatible with Android mobile devices running Android 2.1 or later and also iPod, iPhone and iPad running iOS 4.0 or later.