Aijirn inogona kupa mavhairi ekuchengetedza yezvakashata zvakasiyana, inonyanya kushandiswa kumvura uye ongororo ongororo. Rudzi urwu rwekuchengetedza vial runogona kunzi zvakare epa vial, zvakananga iyo 40ml screw cap epa vial. Kuchengetedzeka kwekuchengetedza kweEPA mabhodhoro-epamusoro masango ndeye 20ml, yakadai se20ml, 30ml, 40ml, uye 60ml.