those aren’t standard kleenex tissues, those are kimwipes (though technically they’re made by the same company). kimwipes are lint-free and additive-free paper to prevent contamination and scratching of delicate surfaces in the lab. slides and anything that’s glass and needs to stay clean but isn’t necessarily a premium coated optic lens, which have their own kind of tissue product.

also, jesus christ if i had access to that kind of room i don’t think i’d ever leave it.