Plastics. Polyols for use in the production of polyurethane. Determination of basicity1 Scope This International Standard specifies a method for the measurement of trace amounts of basic materials present in polyether polyols used in the production of polyurethanes. It is important to know the trace amount of basicity in a polyol to prevent gelation of the reaction mass during the production of polyurethane prepolymers. It is also useful to control the basicity in polyols used for polyurethane production to assure consistent and

BS EN 1870-13 safety of woodworking machines

milling and baking

This standard only applies to extruded porthole tube for general engineering applications made in the following alloys:

BS EN 15165 on the safety and hygiene requirements for forming machines is useful for:

BS EN 14450 includes for purpose of repeatability two mains driven tools are included:

primarily for use with hand-held drilling machines in mines: type 43

Its object is to document the methods for measuring the effective area (Aeff) of these fibres

which then helps in increasing the profits

A reflective surface is a material that can bounce light off itself

but its effect on acid substances generated in the base paper itself is uncertain

ISO 18523‑1 applies

local government safeguarding boards)