(1)material:borosilicate 3.3 (2)Standard mouth:14,19, 24, 29,40 (3)volum:from 5ml to 10000ml

(1)item:Flask,round bottom,single neck

(2)material:heat resistant 3.3 borosilicate glass

(3)all Types:5/14; 10/14; 25/14; 50/14; 100/14; 150/14; 10/19; 25/19; 25/24; 50/19; 100/19; 150/19; 250/19; 500/19; 1000/19; 50/24; 100/24; 150/24; 250/24; 500/24; 1000/24; 2000/24; 50/29; 100/29; 250/29; 500/29; 1000/29; 2000/29; 3000/29; 3000/40; 5000/40; 10000/50

(4)We can produce all kinds of products as you need.

Flask,round bottom,single neck