The suits protect the experiment from dust and other contaminations, which could compromise the result of the experiment.

The suit, together with gloves, mask, overshoes and headphones, is used in order to avoid contamination by particles that we commonly carry in large quantities: only 0.1 grams of dust inside an experimental apparatus with hundreds of tonnes of material can compromise the experiment. In experiments that study rare events it is therefore essential that conditions of extreme purity are maintained.

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