purificator

The altar is first prepared by placing on it the corporal, purificator, missal and chalice.

They are used like the Western purificator to wipe the lips of the communicants and to dry the chalice and other sacred vessels after the ablutions.

The purificator (purificatorium or more anciently emunctorium) is a white linen cloth which is used to wipe the chalice after each communicant partakes.

Beginning of the Liturgy of the Eucharist: Servers arrange the corporal, the purificator, the chalice, the pall, and the Missal on the altar, and then assist the priest in receiving the bread and wine and perhaps other gifts that are presented to him.