We routinely use round bottom flask in our lab and I found these RB flask to be of very good quality. It feels sturdy and does not break very easily.Thank you.
4 Oz. Amber Boston Round Glass Bottles With Black Dropper - Pack Of 24
11 Review
2-Pack 32Oz All-Purpose Heavy Duty Plastic Spray Bottles - Leak Proof, Adjustable Nozzle For Cleaning, Planting & Pet Care - Green
22 Review
Get Your All-Purpose Cleaning Solution With Bealee'S 24 Oz Plastic Spray Bottles - 2 Pack
16 Review
3Pcs 500Ml CVNDKN Wash Bottles W/ Scale -16 Oz: Plastic Safety Lab Squeeze Bottle
13 Review