Specifies a spectrophotometric method, known as the tetrachloromercurate (TCM)/pararosaniIine method, for the determination of the mass concentration of Sulfur dioxide in ambient air within the range of 20 ug / m3 to about 500 ug / m3..
Describes a method for the measurement of the mass of particulate matter in ambient air and is based on the absorption of beta rays by the particulate matter..
Specifies a method for the simultaneous determination of the total alkali content and the total fatty matter content of soaps excluding compounded products..
Specifies method for the determination of the contents of unsaponifiable, unsaponified and unsaponified. saponifiable matter in commercial soaps, excluding compound products..