Long narrow neck round glass boiling flask 50ml 

Borosilicate glass 3.3 Boiling Flasks, Round bottom, Long narrow neck 1. Capacity:  50ml/100ml/150ml/200ml/250ml/300ml/500ml/1000ml/2000ml/3000ml/5000ml/10000ml/15000ml/20000ml 2. Packaging:  Different capacity with corresponding packing(50ml: 240pcs/carton, 100ml: 160pcs/carton, etc) 3. Material: Borosillcate glass 3.3 4. OEM is acceptable. 5. Application: chemistry storage 6. MOQ: 5000 Pieces 7. Lead time(If you finish the payment today, your order will ship out within the delivery date): (1) 1~5000 Pieces: 45 days; (2) > 5000 Pieces: to be negotiated. 8. Color: Clear 9. Advantages: (1) Perfect chemical resistance and heat resistant; (2) High temperature resistance. Perfect chemical resistance, good thermal stability; (3) Borosilicate 3.3. Glass Uniform wall thickness distribution.