Methanol and ammonia are used in many duplicating machines.
duplicating machine in American English
a machine for making exact copies of a letter, photograph, drawing, etc.
duplicating machine in American English
noun
1.
a duplicator, esp. one for making identical copies of documents, letters, etc.
2.
profiler
Word origin
[1890–95]This word is first recorded in the period 1890–95. Other words that entered Englishat around the same time include: blanket roll, bootstrap, cholesterol, honky-tonk, plein-air