The lesser detected level was of 0,3 g/mL? area 0,9599 mv*s (noise 0.1 g/mL) and the quantificvel value was 1,0 g/mL. For the chemical qualification the evaluation of the aeration process was carried through and the results had demonstrated that from 6 hours of aeration the products can set free and be used with safe and validated residual levels, that is, 10 lesser values that ppm. One notices that how much bigger the temperature in the room of aeration and greater efficiency of the system of air exchange, minor will be the aeration time. QUARREL Through the analysis method gaseous chromatography had been gotten resulted that 55C and 28 exchanges of ar/hora allow to evaluate the residual security of EtO from 6 hours of aeration, determined in enterais bottles what it represents profit of time productivity when compared with the study carried through for Martins et al 9,10,11,12que determined the levels of EtO in cannulas and got the time of 19 hours in aeration. The aeration time depends on the material of the product and methodology of the aeration system that can be adapted for each situation, what to confirm the differences of difusibilidade of oxide of ethylene for the enteral bottle and the cannulas.

This difference is justified by the temperature of 55C for the time of 6 hours and 35C for the time of 19 hours 10,11,12,13. Moreover, the removal of EtO in the sterilizer through 14 pulses ar/vcuo (daily pay-aeration) had made with that the concentration of initial EtO was reduced in the sterilizer, what increased the efficiency of the process aeration 10,11,12. The revision of the main risks of the use of oxide of ethylene in medical materials emphasizes measured of risk control and had cited studies carried through in workers displayed to the EtO who had presented greater neoplasia incidence.