Acetobacter aceti

This is a genus of acetic acid bacteria used in the creation of vinegar and traditional Flemish sour ales. A. aceti is also used in the manufacturing process of acetate rayon, plastics, rubber, and photographic chemicals.

Full: Acetobacter aceti
Japanese: A. アセチ, A. asechi
Type: Bacteria

Manga Notes:
When he crystallizes he is calm. (Ch 02)

Story Details:
We first see this when Itsuki Keizou Sensei asks Sawaki Tadayasu to identify a number of microbes to demonstrate his abilities, he identifies this one in a vinegar. Sawaki also illustrates his ability to grasp individual microbes out of the air by plucking a A. aceti from the air.