general reference
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VICIAG International
G
GC
GasChromatography.
Ananalyticalmethod incorporatingan
injection system,analytical column,controlled
temperaturezone,anddetector.An inert carrier
gasmoves the sample through thecolumn,
which separates the samplecomponents into
discretebandswhicharemeasuredas they
pass through thedetector.
Guardcolumn
Acolumnused in seriesbetween the injector
andanalytical column toprevent certain types
of components fromentering theanalytical
column.
H
HPLC
HighPerformanceLiquidChromatography.
Ananalytical systemconsistingof an injector,
pump,analytical column,anddetector.Using
a liquidmobilephase, the sample ispumped
through thecolumn,where it is separated into
discrete samplecomponentbandswhichare
detectedandmeasuredas thebandselute
from thecolumn.
I
ID
Internal diameter.
Inert
Technically,unreactivewithother substances;
however, in the instrumentationfield,“inert”isa
relative term.Oftenpolymersare termed inert
but are soluble in somefluidsandcan react
with somecompounds.
Internalfitting
A typeof compressionfitting inwhich the
fittingbodyhas female threads;an internal nut
hasmale threads.
L
LC
LiquidChromatography.
Anyof avarietyof low tomediumpressure
techniqueswhichusea liquidmobilephaseas
thecarrier tomove sample. Similar toHPLC .
Largebore
Abore that is larger than the standard for a
givenfitting;afittingorderedwitha largebore
will havea largerfloworifice than the standard
or capillaryborefittingof the samedesign.
Denotedby suffix“L”in theproductnumber.
Lueradapter
Anadapter that connectsa tapered luerfitting
(squarenib) of a syringe toa tubeor tube
fitting.
M
Malenut
Anutwithmale threads.
Makeup
Thepoint atwhicha ferrule,nut,and tubeare
assembled in the fashionwhichwill effect a
leak-free seal. Inmost compressionfittings, that
isaccomplishedbycompressing the tubewith
the small endof the ferrule.WithValcometal
ferrules, the ferruleusuallymakesupon the
tubebycuttinga shallow ring in it.
Manifold
A typeofdistributionfitting inwhicha single
source isdirected tomultipleoutlets,or vice
versa.Caution!Usingacommondistribution
fitting in reverse tomergemultiple streams
maycreatedeadvolume.Specialmanifoldsare
available for thisapplication.
Microborecolumn
A liquidchromatographycolumnof narrow
bore (typically2mmor less) for improved
resolution.
N
NPT
National PipeThread;a standardized tapered
pipefitting.Seepipe thread.
Nanobore
Nanoboregenerally refers tocomponentswith
bore sizes less than250µm (0.010").
Nanovolume®
The trademark registered toValco Instruments
Co. Inc.andVICIAG International,applied toour
nanoborecomponentswithbore sizes less than
250µm (0.010").
Glossary
