flasks and bottles with ground
- Flasks, flat bottom, DURAN, with standard ground, without stopper
- Flasks, round bottom, DURAN, with standard ground, without stopper
- Cork rings
- Erlenmeyer flasks, graduated, DURAN, with standard ground, without stopper
- Erlenmeyer flasks, graduated, DURAN, with NS glass-stopper
- Flasks, pear shape, borosilicate glass 3.3, round bottom, standard ground socket
- Flasks, pointed shape, borosilicate glass 3.3, standard ground socket, notation
