美國PYREX短頸圓底玻璃燒瓶
這些1L的PYREX圓形底部沸騰的燒瓶有短的環頸，并帶一個8號橡膠塞子。這些環頸沸騰的燒瓶精確地用工具來調整塞子。強化輪輞增加機械強度。這些燒瓶被用于要求嚴格的塞車和在常規的實驗室清洗中清洗瓶子的應用。它們是由7740硼硅酸鹽玻璃制造的。通過仔細地控制墻的厚度，以便在熱膨脹和機械強度之間達到適當的平衡，以獲得更大的沖擊阻力。它們出色的化學耐久性會導致在zui艱苦的實驗室條件下的無污染結果和長壽。PYREX沸騰瓶的正常工作溫度為230C。
4260-250、4260-500、4260-1L、4260-2L、4260-3L、4260-5L、4260-12L
美國PYREX短頸圓底玻璃燒瓶
These 1L PYREX round bottom boiling flasks have short ring necks and take a No. 8 rubber stopper. These ring neck boiling flasks are precisely tooled for uniform stopper fit. The reinforced rim increases mechanical strength. These flasks are used in applications requiring rigid stoppering and as wash bottles in routine lab washing. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance. Their excellent chemical durability results in contamination-free results and long life under the toughest lab conditions. The normal working temperature for PYREX boiling flasks is 230C.
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