Chlorpyrifos-ethyl [221.202]

Content Handbook P

 

Outline of method

The chlorpyrifos in long lasting insecticidal net is determined by reverse phase high performance liquid chromatography using UV detector, at detection wavelength of 290 nm with 1,4-dibromonaphthalene as internal standard.

 

Scope

The method is usable for LN-formulations.

MT 190 - Determination of release properties of lambda-cyhalothrin cs formulations

 

Content Handbook L

 

Outline of method

A known quantity of the capsule suspension is transferred to a glass bottle and is then subjected to a rolling movement with a specified amount of a hexane- ethanol mixture with an internal standard. After rolling for three specified periods the concentrations of lambda-cyhalothrin in the hexane-ethanol layer are determined.

 

Scope

This method is intended for use only with lambda-cyhalothrin CS formulations for public health applications.