When Henry and Martinez go to see the 'Codex," they are required to don white cotton gloves ostensibly as a means of "protecting" the document from "oils" on the hands. This is actually not something that is down when handling old manuscripts and books as gloves dull the sense of touch thus making it significantly easier to rip/tear pages (usually made of vellum instead of paper). Actual archivists do not wear anything on their hands; rather hands should be washed and thoroughly dried before handling old documents. And the ink and and illuminations should never be touched. The only time protective gloves may be necessary is when it comes to handling old photographs.
The primary victim, Vicky, is a grad student who is said to be "translating an ancient manuscript they found in Egypt." It is described (at around 17 mins) as a scroll with "layers written on top of each other." Henry helpfully supplies the word for such a document: "a codex." Actually the word is a palimpsest. A scroll cannot be a codex, as they are two different things. A scroll is written on a single sheet. What made a codex superior to scrolls were multiple pages, making it easier to turn to different places in a document. Either could be a palimpsest, which refers to a manuscript where they original writing was effaced to write something new, but where traces of the original remain.