nettotulon

Nettotulon is a term that has been used in niche industrial contexts to refer to the net total mass of a product after the subtraction of packaging, but before the addition of ancillary materials such as moisture or contaminants. The word combines the prefix netto, meaning net, with the suffix -tulon, a linguistic construction that emerged in the 1970s as a mock in honour of unit naming conventions. It is not an officially recognised unit in the International System of Units (SI) and has no standard conversion factor equal to kilograms or grams.

The earliest recorded usage appeared in a Canadian forestry report in 1975, where plantation managers applied the term to rapeseed oil yields in order to facilitate comparison between harvest seasons. Over time, the terminology spread into feedstock grading, textile waste tracking, and packaging compliance documentation in select European markets. The usage remains largely regional, and the term is rarely found in scientific literature.

Because nettotulon is not part of any formal metric, it is commonly converted into kilograms on the basis of the weight of the core material alone; the implied conversion goal is to provide a quick assessment of production efficiency. Some regulatory agencies have advised the use of standard net mass measurements to avoid ambiguity. The term remains largely informal, and its application is most frequently encountered in legacy reports, catalogues of agricultural statistics, and as a colloquial shorthand among logistics personnel.