Our 500mL S35/20 1 Neck Spherical Joint Round Bottom flask is constructed with 3.3 Borosilicate glass and a 35/20 neck for a durable, common size flask to use.
Neck Size: 35/20
We ship all glassware products with additional care, but sometimes they arrive broken. If glassware arrives broken, please contact us within 7 days of receiving your product and we will either send you a brand new piece or send you a refund! Any glassware broken after delivery voids all warranties. Thank you for understanding!
For Technical Support, Questions, or Other Issues Please Email or Call Us!
USA Lab Equipment
Livonia, MI 48150