Vector and Pest Control in Refugee Situations (United Nations High Commissioner for Refugees (UNHCR) / Alto Comisionado de Naciones Unidas para los Refugiados (ACNUR), 1997, 124 p.) |

To prepare a pesticide solution from a emulsifiable concentrate (EC), the following formula can be used:

_{}

where

X = quantity of water to add to 1 part of EC

A = concentration of EC

B = desired concentration of solution

**Example:**

To obtain a 2.5% formulation of a 50% EC:

_{}

It is therefore necessary to mix 19 parts water to 1 part EC to obtain the required concentration.