DrySyn Classic consists of a base which will accomodate 1000ml flasks and 4 inserts for 500ml, 250ml 100ml and 50ml flasks. DrySyn enables clean, safe synthesis without the hazards or problems associated with silicon oil baths or heating mantles. With no messy oil, heat resistant handles, and simple to configure range of inserts this system is world renowned. With heating rates similar to oil there is no need to change your chemistry either.