(1) Iphakheji ineziphu evaliweyo, enokuthi isetyenziswe kwakhona kwaye inokutywina imveliso.
(2) I-Free ye-BPA kunye ne-FDA-evunyiweyo kwizinto zebakala lokutya.
(3) Ithintela ukukhanya kwe-ultraviolet, ioksijini kunye nokufuma kwihlabathi langaphandle, igcina isitsha kangangoko kunokwenzeka.