Water estimator to Dean Stark, borosilicate glass 3.3

Water estimator to Dean Stark, borosilicate glass 3.3
Manufactured from borosilicate glass 3.3. Suitable for xylol method. System completed with 500 ml (NS 29/32) flask + Liebig condenser with jacket length 400 mm + measuring tube (10:0.1 ml) with PTFE stopcock.