Trapezoidal flasks, A class, with certificate of conformity, ml 1 with stopper NS 7/16

Trapezoidal flasks, A class, with certificate of conformity, ml 2 with stopper NS 7/16

Trapezoidal flasks, A class, with certificate of conformity, ml 3 with stopper NS 7/16

Trapezoidal flasks, A class, with certificate of conformity, ml 5 with stopper NS 7/16

Trapezoidal flasks, A class, with certificate of conformity, ml 10 with stopper NS 10/19

Trapezoidal flasks, A class, with certificate of conformity, ml 20 with stopper NS 10/19

Trapezoidal flasks, A class, with certificate of conformity, ml 25 with stopper NS 10/19

Trapezoidal flasks, A class, with certificate of conformity, ml 50 with stopper NS 12/21

Trapezoidal flasks, A class, with certificate of conformity, ml 100 with stopper NS 14/23