A professional who tends tanks that remove acidity, impurities, and inadequately processed material from nitrocellulose, used in manufacturing chemical and explosive products. Respnsibilities include:

• Pumps nitrocellulose into poacher tubs (tanks) fitted with steam coils or steampipes.
• Turns valves to admit water and steam to boil mixture for specified time.
• Tends shaker screen and vacuum filter to wash nitrocellulose.
• Takes samples to laboratory for analysis.
• Reads laboratory reports and adjusts blends to meet specifications.
• Loads blender tubs with measured amount of different types of nitrocellulose to blend products according to specifications.