GB/T 13917.2-2009 English PDF (GBT13917.2-2009)

This Part of GB/T 13917 specifies the indoor efficacy measurement methods and evaluation criterions for aerosols. This Part is applicable to the determination and evaluation of the efficacy of aerosols, which are directly sprayed on health pests mosquitoes, flies, cockroaches, during pesticide registration. 2 Test materials Use standard test insects of sensitive strains raised in the laboratory. 2.1 Mosquitoes Culex pipiens pallens (northern region) or Culex pipiens quinque fasciatus (southern region), which are female adults that do not feed on blood on the 3rd to 5th day after emergence. 2.2 Flies Musca elegans, which is an adult on the 3rd to 4th day after emergence, half male and half female. 2.3 Cockroach Blattella germanica, which is a 10th to 15th day adult, half male and half female. 3 Instruments and equipment 3.1 Cylinder device (Figure 1) The colorless transparent cylinder (C) is placed on the bracket (I). A pull plate (A) is inserted into the upper frame of the bracket. There is a colorless transparent cylinder (or tube) (B) under the pull plate. There is an insect hole (J) in the middle of the side wall. The hole is plugged with a rubber plug, after putting the test insect in. There is a 12-mesh screen cover (H) on the mouth of the colorless transparent cylinder or tube (B). There are pillars (F) on the bottom of the bracket (I), to make the cylinder (or tube) (B) GB/T 13917.2-2009 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery. Page 6 of 8 closely fit with the lower part of the tube (C). The top cover of the cylinder has a colorless transparent round plate (E). There is a round hole in the center of the round plate for spraying aerosol. After spraying, the round hole is plugged with a rubber stopper (G). The junction between the cylinder and the circular plate is padded with a rubber gasket (D), to prevent mist droplets from leaking. A - Pull plate; B - Colorless transparent cylinder (or tube), height 170 mm, inner diameter 200 mm; C - Colorl...