Cooling finger S29 / SL29

Application

  • Gas purification by condensation, e.g. in vacuum systems

Advantages

  • made of borosilicate glass3.3
  • High chemical resistance
  • High thermal resistance
  • Simple, cost-effective design
  • Quick change possible

Executions

  • K = spherical ground joint S29
  • OK = spherical ground joint S29 with O-ring seal
  • GL= Glass thread with olive GL18
  • NW= Vacuum flange
  • Special dimensions
  • Special connections

Simple cold traps, also known as cold fingers, are for standard applications in conjunction with vacuum pumps. Moisture or solvents are condensed out in the chemical application area. The cold trap is used to protect the vacuum pump. The special feature of this design is that the user does not need a tripod to hold the cold trap. The cold trap has a bead with which it is hooked into the support ring of the Dewar flask. The cold trap can therefore be changed quickly and easily. LN2 or CO2 is used for cooling. The coolant should be at least 50°C colder than the condensation temperature of the substance.

Type S 29 GL

Short version S29

Type S 29-K

Type S 29-O

Type S 29-GL

Type S 29-NW16 / NW25

Technical data short version

Type                Cooling fingers theoretically. Vol. [ml] Condensate theoretical. Vol. [ml] for Dewar type Connection type Article no.
S 29-K 150 1000 12C Spherical ground joint S29 1732
S 29-O 150 1000 12C Spherical ground joint S29 with O-ring seal 1736
S 29-GL 150 1000 12C Glass thread GL18 with olive 1741
S 29-NW 16 150 1000 12C Vacuum flange KF-NW 16 1732-NW16
S 29-NW 25 150 1000 12C Vacuum flange KF-NW 25 1732-NW25

Long version SL29

Type S 29-K

Type S 29-O

Type S 29-GL

Type S 29-NW16 / NW25

Technical data long version

Type                                                   Cooling fingers theoretically. Vol. [ml] Condensate theoretical. Vol. [ml] for Dewar type Connection type Article no.
SL 29-K    250 2000 18C Spherical ground joint S29 17365
SL 29-O 250 2000 18C Spherical ground joint S29 with O-ring seal 17366
SL 29-GL 250 2000 18C Glass thread GL18 with olive 17367
SL 29-NW 16 250 2000 18C Vacuum flange KF-NW 16 17365-NW16
SL 29-NW 25 250 2000 18C Vacuum flange KF-NW 25 17365-NW25

Accessories

CO2 grid / plastic ring
 Pertinax screw connection
 
Designation Article no.
CO2 grid 17570
Plastic ring 1733
GL 18 Olive 17331
Cable clamp S29 17341
Pertinax screw connection KF 10/16 17315
Pertinax screw connection KF 20/25 17316
Centering and O-ring KF 10/16 17320
Centering and O-ring KF 20/25 17321

Technical data sheet

Cooling finger S29 / SL29

Download cold trap catalog

Cold trap catalog as PDF file: 
Download cold trap catalog