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Tube Stub
Locking Ring
Replacing the Septum
Replace septum after
5-10 injections.To replace
septum , turn r etainer counter-
c lock wise. For replac ement
septa order Teflon bonded to
Silcone, diameter = .375" (9.5 mm)
Figure 31
Response Factors
The response factors were determined over the range 5 - 500 ppm,
based on a 100 ppm isobutylene calibration. Isobutylene RF = 1.0.
The following formula was used for calculation of response factors:
Response Factor =
A response factor less than 1.0 indicates a compound response
better than that of isobutylene. A response factor greater than 1.0
indicates a lower response than that of isobutylene.
Septum Retainer
Gas Bag Valve
Injec tion Port
Remov e retainer and
replac e silicone septum .
Place septum with
Teflon side down.
Replac e retainer
Do not overtighten.
Ov ertightening may result
in needle blocakge
Using the Gas Bag
Actual Concentration
2020 Response
Appendices
169
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Troubleshooting
