Meanings of per mille in English

This represents as near 20 per mille of chlorine as possible.

Thus, where the temperature is 12° C., the water almost invariably has a salinity very near 35 per mille.

Thus, where the temperature is 12º C., the water almost invariably has a salinity very near 35 per mille.

Lines connecting points with the same salinity (isohalins) are drawn unbroken, and, in addition, salinities above 35 per mille are shown by shading.

At 100 metres the difference was even greater than 0.5 per mille; this is a great deal in the same region of open sea.

3, two great volumes of water, from the surface down to depths greater than 500 metres, which have salinities between 35.4 and 35.5 per mille.