Fittings-Chromatography-2014 - page 84

valco cheminert® rheodyne ®
Sample loops
80 | www.vici-jour.com | VICIAG International
PEEK loops
Wide rangeof volumesavailable
Biocompatible
VICI JourPEEK sample loopsaremade from stripedcolor-codedPEEK tubing
andPEEKfittings.PEEK isamechanically strong,chemically inertpolymer
ideal forHPLCapplications.SinceourPEEK sample loops containnometalsor
other extractablecompounds,no foreignmaterialswill be introduced into the
system.Softener-freepolyethylenecapsareused toavoidcontaminationof
the tubing.
Sample loopsareaccurately sized for eachvalve type.However,with small
volume loops, the toleranceon the IDof the tubing (±0.001") canhavea
significant effecton thevolume. Therefore loopvolumeand loopappearance
maydiffer frombatch tobatch.
PEEK loops
PEEK loops for:
Cheminert. . . . . . . . . . . . . . page81
Rheodyne. . . . . . . . . . . . . . . . .81
Valco. . . . . . . . . . . . . . . . . . . 81
Sample loops index
disclaimer
Themaximumholding
pressure for any typeof
connections involving
tubinganda ferrule
varies considerablywith
the tubingmaterial the
ferrulematerial, the
clearancebetween tubing
ODand ferrule ID,and the
shapeof thefittingdetail.
more information
ValvTool . . . . . . . 88
Stainlesssteel loops
Stainless loops for:
Cheminert. . . . . . . . . . . . . . . . .82
Rheodyne. . . . . . . . . . . . . . . . .83
Valco. . . . . . . . . . . . . . . . . . . 82
specs
Material:
Loops PEEK
Nuts PEEK
Ferrules PEEK
Caps PE
(Polyethylene)
Tolerances:
±0.025mm
(.001")
PEEK sample loopsareparticularlywell suited for separations involvingproteins,peptides,nucleic
acidsorother samplesofbiological originaswell as in IC systemswheremetal tracesmay interact
with ionic samplesor release transitionmetals thatmaydeactivate ionexchangecolumns.
PEEKhex-headnutsandPEEK ferrulesprovide reliableconnections,andavoid twistingof the tube.