Annex

The Methyl Bromide rate required is 32g/m³ for 2 hours at 21ºC and above at Normal Atmospheric Pressure (NAP). Cut flowers must achieve an 80% retention rate, timing of the fumigation shall only commence when all lines show 80% or greater of the initial dosage.

It is critical to ensure that the necessary gas concentration has been achieved. There should be three monitoring lines used and each placed within the bunches in selected cartons. The following measures to ensure the effective circulation of the fumigant may also be required:

1. Cut flowers that are tightly packed into cartons and that are placed in plastic sleeves must be loosened within boxes to ensure adequate gas penetration during fumigation.
   
   

2. Polythene type liners or non-perforated liners must be opened.
   
   

3. If open ends of sleeves are packed together in the middle of the carton, the cartons must be re-packed and open ends must be placed towards the sides of the cartons.
   
   

4. Cartons without ventilation holes or with flowers in plastic sleeves obscuring the holes must be stacked with the tops open.