Gastec 122P 检测甲苯气体管 C6H5CH3(100-7000μg/m3)

Calibration Range: 100-2500μg/m3
Measuring Range: 100-7000μg/m3
Sampling (flow) Rate: 200mL/min
Sampling Volume: 6000mL, 2000mL
Sampling Time:  30 min, 10 min
Colour Change: White → Pale brown 
Nr. of tests: 5 tubes
Automatic Gas Sampler: GSP-300FT-2



Calibration Range 100-2500μg/m3
Measuring range 100-7000μg/m3
Sampling (flow) Rate 200mL/min
Sampling Volume 6000mL, 2000mL
Sampling Time 30min, 10min
Detecting Limit 50μg/m3(6000mL)
Colour Change White → Pale brown
Corrections for temperature/humidity Unnecessary for 5 to 35 ºC
Unnecessary for R.H.0 to 80%
Shelf life 2 years
Possibly coexisting substances and their interferences (NOTE)
Substance(s) Interference Colour change by itself
Ethanol   No No
Xylene,Styrene 1000μg/m3 + Pale brown
p-Dichlorobenzene   No No
α-Pinene   No No
n-Hexane   No No
Aromatic hydrocarbons   + Pale brown
Formaldehyde 1/3 No No
Other substance(s) measurable with this detector tube
Substance(s) Correction Factor Pump Strokes [n] Measuring Range
Ethyl benzene coefficient: 1.1 200mL/min x 30min 110-2750μg/m3
Xylene coefficient: 5.4 200mL/min x 30min 540-13500μg/m3
Calibration gas generation Permeation tube method
Electric sampling pump
This detector tube is suited for measuring toluene in indoor environments. The GSP-200 / GSP-300FT-2 series automatic gas samplers (or comparable sampling devices/pumps) should always be used for optimal performance.
A deviation of +/-10% in the sampling flowrate (i.e. amount of air flowing through the tube at a given moment) or the sampling amount (total sampled amount of target substance) causes an average margin of error of approx. +/-10% (maximum +/-20%) in the indicated value.
TLV-TWA TLV-STEL Explosive range
20 ppm(2014) -- 1.4。チ6.7%


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