539
REFERENCESTANDARDS |
COLUMNTESTMIXES
GC, HPLC
benzene
1.00mg/mL
benzaldehyde
0.04
benzyl alcohol
3.00
4-methoxybenzyl alcohol
2.00
HPLCNormalPhaseTestMix#1
(4 components)
In hexane, 1mL/ampul
cat.# 35004 (ea.)
benzene
3.00mg/mL
uracil
0.02
naphthalene
0.50
biphenyl
0.06
HPLCReversedPhaseTestMix#1
(4 components)
Inmethanol:water (75:25), 1mL/ampul
cat.# 35005 (ea.)
Caffeine at 5, 25, 125, 250, 500µg/mL inwater in a five ampul kit.
HPLCOQLinearityTestMixKit
Linear detector responses to concentration variations are an
important part of operation qualification (OQ) for HPLC
instruments.Our kit of five aqueous solutions of caffeine canbe
used to generate simple plots of UV response versus concentra-
tion. Certificate of Analysis includes caffeine concentration,
calculated variance in preparing each mixture, a linearity plot,
and coefficient of determination (r²) for the linear plot.
1mL each of thesemixtures.
cat.# 31805 (kit)
glucose
2.0mg
fructose
2.1
lactose
4.4
maltose
4.5
sucrose
4.0
CarbohydrateHPLCPerformanceCheckMix
(5 components)
Performance qualification (PQ) determines the precision of the
HPLC system.Ourperformancecheckmix forHPLC/RI consists
of five simple sugars in varied concentrations. We prepare the
reference material in water, lyophilize it, and pack it dry for
enhanced stability.
Dry components in 4mL screw-cap vial. Reconstitute in 1mL acetonitrile:water (75:25)
to 2.0, 2.1, 4.4, 4.5, 4.0mg/mL, respectively.
cat.# 31809 (ea.)
amitriptyline
hydrochloride
2,800µg/mL
ethylbenzene
1,700
quinizarin
94
toluene
1,400
uracil
28
HPLCPerformanceTestMix
(5 components)
TheNational Institute of Standards andTechnology (NIST) has
formulated a mixture that is highly effective for characterizing
HPLC columns for efficiency, void volume,methylene selectivi-
ty, retentiveness, andactivity toward chelators andorganicbases.
Results can be used for column classification, for column selec-
tion, formonitoringcolumnperformanceover time,or forqual-
ity control.We test ourmaterial against theNIST870 standard.
Inmethanol, 1mL/ampul
cat.# 31699 (ea.)
No data pack available.
No data pack available.
No data pack available.
Quantity discounts not available.
No data pack available.
dimethyldichlorosilane (DMDCS)
Dimethyldichlorosilane (DMDCS)DeactivatingAgent
Restek offers dimethyldichlorosilane (DMDCS), for deactivating
liners andother glassware. Simplydilute theneatmaterial to a 5%
solution in toluene, soak the glass item(s) in the solution for 15
minutes, and rinse with toluene and methanol. DMDCS reacts
withactivehydroxyl groupson theglass surface toproduceadeac-
tivated surface.Adetailedprocedure is includedwith theproduct.
Neat, 20mL/ampul
cat.# 31840 (ea.)
n
-heptadecane (C17)
1.5µg/mL
n
-octadecane (C18)
10
n
-nonadecane (C19)
2
n
-eicosane (C20)
100
n
-docosane (C22)
1,000
n
-tetracosane (C24)
10,000
OQResponseLinearityTestStandard
(6 components)
In isooctane, 1mL/ampul
cat.# 33906 (ea.)
n
-tetradecane (C14)
n
-pentadecane (C15)
n
-hexadecane (C16)
FIDPerformanceEvaluationStandard
(3 components)
0.03w/w% each in hexane, 1mL/ampul
cat.# 33908 (ea.)
1,2-dichlorobenzene
nitrobenzene
tert
-butyl disulfide
OQ/PVHeadspaceStandard
(3 components)
2,000µg/mL each in ethanol, 1mL/ampul
cat.# 33909 (ea.)
also
available
Individual ampulsof caffeineareavailableon
page444
.
GC
cont'd
HPLC
cont'd
HPLC
DeactivatingAgent
kit
DocumentationSearch
•Material safetydata sheets
• Certificatesof analysis
•Datapacks (by catalognumber
and/or lot number)
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TelNo : 03 9762 2034 . . . inAUSTRALIA
Mar 2011
