Glass Kjeldahl flask
Glass Kjeldahl flask, marked Pyrex, 100ml, c.1935-1960.
24 glass Kjeldahl flasks, assorted sizes some marked Pyrex. c.1935-1960
Glass Kjeldahl flask, marked Pyrex, 100ml, c.1935-1960.
Glass Kjeldahl flask, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, c.1935-1960.
Glass Kjeldahl flask, c.1935-1960.
Glass Kjeldahl flask, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 100ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, c.1935-1960.
Glass Kjeldahl flask, c.1935-1960.
Glass Kjeldahl flask, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, c.1935-1960.
Glass Kjeldahl flask, c.1935-1960.
Glass Kjeldahl flask, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.
Glass Kjeldahl flask, marked Pyrex, 50ml, c.1935-1960.