I-Aijiren's 20mL, 30mL, 40mL, ama-60ml okugcina ibhodlela amakhithi afaka amabhodlela wesampula we-screw cap eyenziwe ngohlobo 1 ingilazi ecacile noma ecwebezelayo, izigqoko ezivulekile nge-PTFE abicane irabha, noma amakhemikhali wesitoreji se-PTFE (angakwazi ukumelana nokugqwala kwamakhemikhali).