"I-Pickling" kumongo wokucubungula insimbi ibhekisela enqubweni yamakhemikhali esetshenziselwa ukususa ukungcola, njengokugqwala nesikali, ebusweni bamakhoyili ensimbi.Inqubo yokukhetha ilungiselela insimbi ukuze iqhubeke nokucutshungulwa, njengokugalela, ukupenda, noma ukugoqa okubandayo.
Kubalulekile ukwenza inqubo yokukhetha endaweni elawulwayo ngezinyathelo ezifanele zokuphepha kanye nemithetho yokulahlwa kwemfucuza, njengoba ama-asidi asetshenziswayo angaba yingozi kokubili abantu nemvelo.
Inqubo yokukhetha ivame ukusetshenziswa ekukhiqizeni imikhiqizo yensimbi ehlukahlukene njengezingxenye zezimoto, amapayipi, izinto zokwakha, nezinto zikagesi, lapho indawo ehlanzekile nengenasikali ibalulekile ekusebenzeni kokugcina.