Distilling Adapters, Claisen heads, borosilicate glass 3.3

Distilling Adapters, Claisen heads, borosilicate glass 3.3
Suitable to be used in distillation assemblies for connecting flasks to condenser. Upper socket designed to accept thermometer either by screw thread adapter or by thermometer socket. Claisen type has a similar use as a standard still head adapter but it is supplied with an extra socket to accept dropping funnels, stirrers and so on.