Using cleaning agents sparingly and minimizing water consumption are the first steps towards environmentally friendly cleaning. Heidelberger Druckmaschinen AG helps ensure wash procedures are carried out in an environmentally friendly manner using automatic washup systems. Low-emission cleaning agents containing vegetable oil esters or hydrocarbon mixtures have been developed since 1990 to significantly reduce air pollutants, though some caused technical issues. As a result, printing press manufacturers and industry groups established testing and certification procedures through Fogra to minimize solvent emissions and ensure agent compatibility.