Clamp for titration vessel/stopper
https://www.scientificgear.shop/shop/k20-08090-k551-3310-clamp-for-titration-vessel-stopper-28800
https://www.scientificgear.shop/web/image/product.template/28800/image_1920?unique=c13c026
K551-3310: Clamp for titration vessel/stopper
