Product describtion:

"Lithium only" is a soft working collodion with a very pronounced tone scale. It needs less exposure time (around 1 f-stop) and is, because of these two peculiarities, highly recommended for portrait works. "Lithium only" comes witth components A and B which have to be mixed immediately or a day before use. Mix only as much as is used for one session (1 part (A) : 1,4 parts (B). Because of its long tone scale it is extremely suitable for landscape photography.  

 "Lithium only" does not contain any toxic chemicals.