Chemical Washer
As of Mekanism 9.7.0 it is now possible to view all recipe strings of the Chemical Washer through the command /ct mekrecipes washer
Addition
Removal
Specifying an input parameter will only remove the specific recipe that uses said input. Omitting the input parameter will remove all recipes that produce the specified output.
Removing all recipes
As of Mekanism 9.7.0 it is now possible to remove all Chemical Washer recipes. (This excludes any recipes added via CraftTweaker)