In the experiment of insoluble particles using microscopic counting method, the use of filter bottle mouth clamp

In the experiment of insoluble particles using microscopic counting method, if the filter bottle mouth clamp (a fixture used to fix the bottle mouth and filter membrane seat, and ensure sealing) is not clamped properly, it is essentially a problem of sealing, adhesion, and pressure stability caused by "fixing failure". Its harm is directly related to the core requirements of the experiment (accurate volume, no pollution, effective particle retention). The specific consequences can be developed according to the logic of "direct impact → chain reaction → final result", and more focus on the exclusive problems brought by the "clamp fixing characteristics"