Flow cups are designed to accurately measure the viscosity[1] of paints, inks, varnishes and similar products.
The process of flow through an orifice can often be used as a relative measurement and classification of viscosity.
This measured kinematic viscosity is generally expressed in seconds of flow time which can be converted into centistokes (cSt) using a viscosity calculator.
[2] Flow cups are manufactured using high grade aluminium alloy with stainless steel orifices (where indicated), flow cups are available with a range of UKAS / ISO 17025 certified standard oils to confirm the flow cup is measuring within specification.