Double-walled, borosilicate immersion well for use with 7825-30, -32, -34, and -36 U.V. lamps. Coolant is introduced through a 4.8mm I.D. PTFE tube attached to a glass tube and secured with a #7 Screw thread bushing. PTFE tube extends down the annular space to insure flow of coolant from bottom of well upward to outlet.
Well has 60/40 inner joint. Outer jacket is 53mm OD. Length above joint is 76mm. Order 7857-06 for use with 7841-03 (250mL) and 7841-04 (500mL), reaction vessels. Order 7857-11 for use with 7841-06 (1000mL), reaction vessel.