Surface active agents — Determination of mineral sulfate content — Titrimetric method
A buffered acetonic solution of a test portion is titrated with a standard volumetric lead(II) nitrate solution in the presence of dithizone as indicator. The method is applicable to anionic surface active agents, containing sodium, ammonium and alkanolamine sulphates. It is not applicable to products containing other compounds such as phosphates or large amounts of chloride nor is it applicable…
Fixed resistors for use in electronic equipment. Part 6: Blank detail specification: Fixed resistor ...
Applies to fixed resistor networks with individually measurable
resistors, of either different resistance values or different rated
dissipations. The blank detail specification is a supplementary
document to the sectional specification and contains requirements
for style, layout and minimum content of detail specifications.
Fixed resistors for use in electronic equipment. Part 5: Blank detail specification: Fixed precision...
It is a supplementary document to the sectional specification and contains requirements for style and layout and minimum content of detail specifications. Applies to fixed precision resistors, assessment level E.
Fixed resistors for use in electronic equipment. Part 4: Blank detail specification: Fixed power res...
It is a supplementary document to the sectional specification and contains requirements for style and layout and minimum content of detail specifications. Applies to fixed power resistors, assessment level E.
