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  Quartz Screwthreads and Stopcocks  
     
 
     
     
Robson quartz screwthread Joints provide a
system of coupling with unbeatable versatility.
Available in both GL and SQ sizes, they are interchangeable and fit universally available
caps and PTFE washers.
Manufactured with the kind permission of GPE Scientific Ltd, the innovatively designed
greaseless 'O'-ring tap is now available
in quartz glass.
     
GL Threas
Size
GL Ref
No.
SQ Threas
Size
SQ Ref
No.
14
RQGL/14
13
RQSQ/13
18
RQGL/18
18
RQSQ/18
25
RQGL/25
24
RQSQ/24
32
RQGL/32
28
RQSQ/28
45
RQGL/45
 
Bore Size
mm
Ref No.
4
RQPTT/- 4RA
5
RQPTT/- 5RA
6
RQPTT/- 6RA
8
RQPTT/- 8RA
10
RQPTT/-10RA