539
REFERENCE STANDARDS |
COLUMN TEST MIXES
GC, HPLC
benzene
1.00mg/mL
benzaldehyde
0.04
benzyl alcohol
3.00
4-methoxybenzyl alcohol
2.00
HPLC Normal Phase Test Mix #1
(4 components)
In hexane, 1mL/ampul
cat. # 35004 (ea.)
benzene
3.00mg/mL
uracil
0.02
naphthalene
0.50
biphenyl
0.06
HPLC Reversed Phase Test Mix #1
(4 components)
In methanol:water (75:25), 1mL/ampul
cat. # 35005 (ea.)
Caffeine at 5, 25, 125, 250, 500µg/mL in water in a five ampul kit.
HPLC OQ Linearity Test Mix Kit
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 can be
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 these mixtures.
cat. # 31805 (kit)
glucose
2.0mg
fructose
2.1
lactose
4.4
maltose
4.5
sucrose
4.0
Carbohydrate HPLC Performance Check Mix
(5 components)
Performance qualification (PQ) determines the precision of the
HPLC system. Our performance check mix for HPLC/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
HPLC Performance Test Mix
(5 components)
The National Institute of Standards and Technology (NIST) has
formulated a mixture that is highly effective for characterizing
HPLC columns for efficiency, void volume, methylene selectivi-
ty, retentiveness, and activity toward chelators and organic bases.
Results can be used for column classification, for column selec-
tion, for monitoring column performance over time, or for qual-
ity control. We test our material against the NIST 870 standard.
In methanol, 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) Deactivating Agent
Restek offers dimethyldichlorosilane (DMDCS), for deactivating
liners and other glassware. Simply dilute the neat material 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
with active hydroxyl groups on the glass surface to produce a deac-
tivated surface. A detailed procedure is included with the product.
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
OQ Response Linearity Test Standard
(6 components)
In isooctane, 1mL/ampul
cat. # 33906 (ea.)
n
-tetradecane (C14)
n
-pentadecane (C15)
n
-hexadecane (C16)
FID Performance Evaluation Standard
(3 components)
0.03 w/w% each in hexane, 1mL/ampul
cat. # 33908 (ea.)
1,2-dichlorobenzene
nitrobenzene
tert
-butyl disulfide
OQ/PV Headspace Standard
(3 components)
2,000µg/mL each in ethanol, 1mL/ampul
cat. # 33909 (ea.)
also
available
Individual ampuls of caffeine are available on
page 444
.
GC
cont'd
HPLC
cont'd
HPLC
Deactivating Agent
kit
Documentation Search
• Material safety data sheets
• Certificates of analysis
• Datapacks (by catalog number
and/or lot number)
Find what you need fast at
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
