Chemical treatment requirements.

CFR · 2024-01-01 · US · Title 7

(a) (1) Be capable of administering the required dosage range for the required duration and at the appropriate temperature, as specified in the treatment schedules in the PPQ Treatment Manual or in another treatment schedule approved in accordance with § 305.2. (2) Be adequate to contain the fumigant and be constructed from material that is not reactive to the fumigant. (3) For vacuum fumigation facilities, be constructed to withstand required negative pressure. (b) (c) (1) (2) (3) (4) (d) (2) Temperature/concentration readings must be taken for items known to be sorptive or whose sorptive properties are unknown when treatment is administered in chambers at normal atmospheric pressure. (3) Unless otherwise specified in the PPQ Treatment Manual or in another (4) Recording and measuring equipment must be adequate to accurately monitor the gas concentration, to ensure the correct amount of gas reaches the pests, and to detect any leaks in the enclosure. At least three sampling tubes or monitoring lines must be used in the treatment enclosure. (5) An adequate number of blowers or fans must be used inside of the treatment enclosure to uniformly distribute gas throughout the enclosure. The circulation system must be able to recirculate the entire volume of gas in the enclosure in 3 minutes or less. (6) The exposure period begins after all gas has been introduced. (7) For vacuum fumigation: The vacuum pump must be able to reduce pressure in the treatment enclosure to 1-2 inches of m

official document · source cfr-2024 · id 7:§ 305.5