Joint Clips, Joint size 19/26, Colour Blue-EIS-CH0869C offers a thoughtfully designed, durable resource for hands-on learning. Made of chemical and temperature resistant plastic, able to withstand temperatures up to 80°C Tapered clip, maximum diameter for joint is 19mm. Single, blue colored joint clip. Eisco Lab joint clips are color coded by joint size for ease of identification Perfect for any science or home laboratory Single, 19/26 size joint clip. Blue. Chemical and temperature resistant plastic clips for holding jointed glassware together, thus reducing the need for clamping. Eisco Joint Clips are color coded by joint size for ease of identification. Recommended maximum temperature limit in use, through the joint is 80°C.