DURAN® Premium Centrifuge Tube, with Round- & Conical-Bottom, 6~250㎖ Made of Boro-glass 3.3, DIN/ISO, 글라스 원심관 DURAN® Premium Centrifuge Tube, with Round- & Conical-Bottom, 6~250㎖ Made of Boro-glass 3.3, DIN/ISO, 글라스 원심관