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I-E-glass Ehlanganisiwe Izulazula Ukuze Ifuthwe
1.Ukusebenza kahle kokufutha,
.Isivinini esimaphakathi sokuphuma kwamanzi,
.Ukukhishwa okulula,
.Ukususwa kalula kwamabhamuza,
.Akukho ukuphenduka kwentwasahlobo ngama-engeli abukhali,
.Izakhiwo ezinhle kakhulu zemishini
2. Ukumelana ne-hydrolytic ezingxenyeni, kufaneleka inqubo yokufutha ngesivinini esikhulu ngamarobhothi
