In the SF6 gas toxic biological test device, can the length of the catheter extending into the mixer be interchanged?

The catheter length in the extension mixer is specifically designed and cannot be interchanged. This is because sulfur hexafluoride (SF6) gas is denser than oxygen (O2), causing it to settle at the lower part of the container. In contrast, oxygen is less dense and tends to rise. To ensure proper mixing and even distribution of gases, the duct connected to SF6 is positioned at the top, while the duct connected to O2 is placed at the bottom. This arrangement allows for more uniform gas blending and ensures that the mixture remains consistent in the middle section. As a result, the catheter from the human poisoning cylinder is strategically placed in the center to optimize performance and safety.

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