CSN EN ISO 6186 This document specifies two methods, A and B, for determining the pourability of plastics in powdered and granular form, by measuring the flow time through a funnel under specified conditions. From method A, information concerning the processability can be derived, whilst method B is especially designed for process control during manufacture. The methods specified are not necessarily applicable to all plastics in powdered and granular form. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.