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