Low form glass vessels heated by Instatherm similar to 9601's, except these have a permanently attached 12' PTFE covered power cord with 2-prong plug for direct insertion into controllers. Power cord cannot be removed from the bath accidently or on purpose, thus avoiding a possible hazardous situation. Never operate dry; be certain that heat exchange medium is in bath before applying current. Complete item includes bath and thermocouple/thermometer holding clip. Code -29 clip for use with -07 Bath; codes -30 or -32 for use with all others.