Petroleum products. Determination of base number. Perchloric acid potentiometric titration method1 Scope This International Standard specifies a method for the determination of basic constituents in petroleum products by potentiometric titration with perchloric acid in glacial acetic acid. The constituents that can be considered to have basic characteristics include organic and inorganic bases, amino compounds, salts of weak acids (e. g. soaps), basic salts of polyacid bases, and salts of heavy metals. The ranges of base number values for which

BS 3288-1 is part one of a multi-series that specifies performance and general requirements for insulator and conductor fittings for use on overhead power lines

pause data-bursts

Normative references have been changed to include updated British Standards such as BS 8499:2017 Specification of domestic gas meter boxes and meter bracket

testing and inspection

and suburban lines

What is BS EN 60254-2 - Lead-acid traction batteries about

A positioner's primary duty is to give pressurised air to the valve actuator

Resin-bound surfacing is a hard-wearing surface option that offers the advantage of being durable while appearing similar to natural stone

and relays

including product and testing requirements

original cross sectional area and methods of verification of permanent set strength

and project information to encourage good workmanship on site