Metrological traceability of measurement results provides the comparability needed for reliable measurement in almost every aspect of our daily life, ranging from fundamental science, through health and safety to global trade. From the author

s (a physicist) perspective and understanding of recent literature, measurements in chemistry compare the

amount of analyte

, are often made

indirectly

, are sometimes

not fully traceable to the SI

, and metrological traceability is perhaps

not always the major concern of the practising analytical chemist

. The present article examines which of these views are typically

chemical

, and which are common to both the physicist and the chemist. Much can be gained by formulating a common understanding of basic concepts of traceability of measurement results in meeting ever-increasing demands for comparability of measurement results in both traditional as well as new areas of technology and societal concern.
Keywords Measurement - Traceability - Comparability - Chemistry - Physics
Based on a lecture given by the author at a mini-symposium
Emerging issues in metrology in chemistry
organised by the IUPAC Analytical Chemistry Division and IUPAC Working Party for Harmonisation of Quality Assurance at IAEA Headquarters, Vienna, 17th February 2004.