1.1 This specification describes a method for determining whether the quantity of quality of adult Encarsia formosa in a shipment adhere to quantity and quality specifications. The test also allows the purity of This specification covers information on and the test method for determining the purity and number of adults released in shipments of Encarsia formosa Gahan (Order Hymenoptera; Family Aphelinidae), parasite of the greenhouse whitefly, Trialeurodes vapo