“witeg” PTFE-plug Burette, Class B, with Fine Graduation, DIN/ISO, 5~100㎖ Made of DURAN® Borosilicate Glass 3.3, Delivery time 35~45sec., 테프론콕 뷰렛 “witeg” PTFE-plug Burette, Class B, with Fine Graduation, DIN/ISO, 5~100㎖ Made of DURAN® Borosilicate Glass 3.3, Delivery time 35~45sec., 테프론콕 뷰렛