BOLA Laboratory Flasks, GL 45, 1000 ml made of borosilicate glass 3.3 with screBOLA Laboratory Flasks Flask made of borosilicate glass 3. 3, thread GL45 or GLS80 with screw cap and pouring ring made of PP, outside with volume scale in 100 ml steps to estimate the volume. Using separately available BOLA Multiple Distributors GL45 or GLS80 and suitable tubing, you can simply fill or empty the flask. Abmessungen: Volume ml 1000 Thread GL45