Content Handbook Q

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 containing an internal standard. After rolling for a specified period the content of lambda-cyhalothrin in the hexane/ethanol layer is determined.

Scope

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

Reason for the revision

The method was revised to improve the robustness of the release rate after 15 minutes by referring to total lambda-cyhalothrin found in the CS formulation and to cover the errata identified in the previous version.

Important note

MT 190.1 supersedes MT 190.