No.131TP
Instructions for
Vinyl Chloride Detector Tube
FOR SAFE OPERATION :
CarefullyreadthismanualandtheinstructionmanualofyourGastecGasSamplingPump.
⚠
CAUTION : If you do not observe the following precautions, you may
suffer injuries or damage the product.
1.Whenbreakingthetubeends,keepawayfromeyes.
2.Donottouchthebrokenglasstubes,brokenpiecesandreagentwithbarehand(s).
△
NOTES : For maintaining performance and reliability of the test
results, observe the following.
1.RecommendtouseGastecGasSamplingdeviceModelGSP-300FT-2(ifnotavailableuse
theairsamplerofequivalenttosamplefor100mL/min)togetherwithGastecDetectorTubes
onlyforthepurposesspecifiedintheinstructionmanualofthedetectortube.
2.Usethistubewithinthetemperaturerangeof0-40℃(32-104℉).
3.Usethistubewithintherelativehumidityrangeof0-90%.
4.Thistubemaybeinterferedwithbythecoexistinggases.Pleaserefertothetable
"INTERFERENCES"below.
5.Theshelflifeandstorageconditionofthetubearemarkedonthelabelofthetubebox.
APPLICATION OF THE TUBE :
UsethistubefordetectingVinylChlorideintheairorinindustrialareasandfordetermining
theenvironmentalatmosphericcondition.
SPECIFICATION :
(BecauseofGastec'scommitmenttocontinuedimprovement,specificationsaresubjectto
changewithoutnotice.)
MeasuringRange 0.2–3.0ppm 3.0–9.6ppm
SamplingRate 100mL/min 50mL/min
CorrectionFactor 13.2
SamplingTime 10minutes
DetectingLimit 0.08ppm
ColourChange Yellow→Reddishpurple
ReactionPrinciple CH2:CHCl＋I2O5＋H2SO4→HCl,Cl2
HCl,CI2＋Base→Chloride
Coefcient of Variation : 10% (for 0.2 to 1.0 ppm), 5% (for 1.0 to 3.0 ppm)
**Shelf Life : Please refer to the validity date printed on the tube box.
**Store the tubes in a dark and cool place.
CORRECTION FOR TEMPERATURE, HUMIDITY AND PRESSURE :
Temperature : Correctfortemperaturewiththetablebelow.
Temperature℃(℉)0
(32)
5
(41)
10
(50)
15
(59)
20
(68)
25
(77)
30
(86)
35
(95)
40
(104)
CorrectionFactor 3.00 2.15 1.60 1.20 1.00 0.90 0.80 0.70 0.60
Humidity : Nocorrectionisrequiredfor0-90%R.H.
Pressure : Tocorrectforpressure,usetheformulabelow:
TubeReading(ppm)×1013(hPa)
AtmosphericPressure(hPa)
MEASUREMENT PROCEDURE :
If automatic air sampler Model GSP-300FT-2 is used
1.Priortooperationpleaseconfirmifblackcolourinletrubbertubeholderisequippedwiththe
sampler.
2.Breakbothendofthetipsofthedetectortubebythetubetipholdersupplied.Connectthe
detectortubetothepumpwitharrow( )onthetubepointingtowardpump.
3.Settheflowmeterat100mL/minandtimerto“10minutes”ofthesampler.Pressthestart
switchofthesamplertostartthesampling.
4.Afterthesampling,removethedetectortubefromthesampler.
5.Readtheconcentrationlevelattheinterfacewherethestainedreagentmeetstheunstained
reagent.
6.Formeasurementshigherthan3.0ppm,prepareafreshtubeandsettheflowmeterat50
mL/minandtimerto“10minutes”ofthesampler.Pressthestartswitchofthesamplerto
startthesampling.
7.Ifnecessary,multiplythereadingsbythecorrectionfactorsoftemperatureandatmospheric
pressure.
INTERFERENCES :
Substance Concentration Interference Interference gas only
HydrogenChloride ≧0.2ppm +Reddishpurpleat0.2ppm
Chlorine 0.04ppm +Reddishpurple
Ethylene ≧55ppm
-
Nodiscolouration
1,2-Dichloroethane ≦10ppm No Nodiscolouration
Tetrachloroethylene ≦50ppm No Reddishpurpleat500ppm
Trichloroethylene 0.04ppm +Reddishpurple
Toluene ≧1.0ppm
-
Nodiscolouration
Benzen ≧0.8ppm
-
Nodiscolouration
Thistableofinterferencegasesprimarilyexpressestheinterferenceofeachcoexistinggasin
theconcentrationrange,thatisequivalenttothegasconcentration.Therefore,thetestresult
mayshowpositiveresultsduetoothersubstancesnotlistedinthetable.Ifmoreinformation
isneeded,pleasecontactusorourdistributorsinyourterritory.
ppm
131TP
0.2
0.5
1.0
1.5
2.0
2.5
3.0
Detecting Layer
Oxidising Agent
