CP-3800 GC Operator’s Manual
101
Testing the 1061 Injector
The most effective method of testing injector performance is by running a
test sample. The following procedure describes how to test the performance
of the 1061 flash vaporization injector. This is best done with a test sample
containing an appropriate set of components for the installed detector. The
following table lists the series of test samples available for Varian G.C.
detectors.
Note:
Due to airline regulations, test samples are not shipped outside the USA
Refer to the compound concentrations in the table below to make your own test
samples.
Table 22 1061 Test Compounds
Test Sample
Part Number
Concentrations of Test Compounds
TCD
82-005048-01
3.00 µg/µL of C
14
, C
15
, and C
16
in iso-octane.
ECD
82-005048-02
33.0 pg/µL of lindane and aldrin in iso-octane.
PFPD 82-005048-03
20.0
ng/µL
of n-dodecanethiol, tributylphosphate, methyl
parathion; 4000 ng/µL of n-pentadecane in iso-octane.
TSD
82-005048-04
2.00 ng/µL of azobenzene, methyl parathion; 4.00 ng/µL
malathion and 4.00 µg/µL C
17
in iso-octane.
FID
82-005048-07
30 ng/µL of C
14
, C
15
, and C
16
in iso-octane.
Note:
If the FID test sample is not available, the TCD test sample can be used if first diluted 100:1.
To run one of these test samples, use the chromatographic conditions listed
below. The detector should be operated at its most sensitive range, e.g., 12
for FID and TSD, 0.05 for TCD, 10 for PFPD, and 1 for ECD. The resultant
chromatogram should approximate that shown in the detector section of this
manual.
Table 23 Chromatographic Conditions for Testing the 1061 Injector
Injector temperature
250 °C
Column temperature
50
°
C initial, ramp to 250
°
C at
20
°
C/minute and hold for 5 minutes.
Injection Volume
1 µL
Observe the eluting peaks for symmetry, separation, and elution time.
Abnormally wide or skewed peaks, excessive elution times, abnormally small
peaks, and noisy or drifting baselines indicate faulty performance.
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