Aijiren na iya samar da kwalayen ajiya na takamaiman bayanai daban-daban, galibi ana amfani da su don nazarin ruwa da ƙasa. Hakanan ana iya kiran wannan nau'in vial ɗin ajiya na EPA vial, musamman 40ml dunƙule hular EPA vial. Ajiye iya aiki na EPA dunƙule-top kwalabe ne 20ml-60ml, kamar 20ml, 30ml, 40ml, da 60ml.