LKB 2219 Multitemp II thermostatic circulator, from Dr.Edward Tuddenham's factor VIII research group at The Royal Free Hospital, made by LKB Produkter AB, S-161 26 Bromma, Sweden and Gebruder Haake GmbH, 1975-1985. LKB 2219 Multitemp II thermostatic circulator 1975-1985