Fertilizers and soil conditioners. Determination of water-soluble potassium content. Potassium tetraphenylborate gravimetric method1 Scope This International Standard specifies a gravimetric method for the determination of the water soluble potassium content of test solutions of fertilizers. It is suitable for use in arbitration and for reference purposes. This International Standard is applicable to those fertilizers containing more than 1,0 % K2O or equivalent amount of K content.

This British Standard takes into account the need to protect many building materials against weathering or other forms of attack normally encountered

The standard for quality management systems recognizes that

provides requirements for competence and quality that are particular to medical laboratories1)

Intercontinental Hotels Group (IHG)

Improve management system performance and resilience

BS EN ISO/IEC 17025 applies to all organizations performing tests and/or calibrations

Precision statement (Statement of accuracy)

BS 869 on specification for toolmakers’ flats and surface plates is useful for:

a total oxygen content from about 1

PD 16949 specifies the quality requirements for automotive related services in line with the BS EN ISO 9001:2008 international standard for quality management systems

Examples for identifying and counting technical actions

reverse operating potential