Insimbi engagqwaliizici:
1. Qedela ukucaciswa nezinto ezihlukahlukene;2. Ukunemba okuphezulu kwe-dimensional, kufika ku-±0.1mm;3. Ikhwalithi enhle yendawo, ukukhanya okuhle;4. Ukumelana nokugqwala okuqinile, amandla aphezulu okudonsa kanye namandla okukhathala;5. Ukwakheka kwamakhemikhali okuzinzile, insimbi ehlanzekile, okuqukethwe okuphansi kokufakwa;6. Ukupakishwa okuhle, intengo evumayo;7. Kungenziwa ngaphandle kokulinganisa.