乙苯检测管NO. 122P
乙苯检测管NO.122P，GASTE乙苯C6H5C2H5 NO. 122P气体检测管，乙苯检测管NO. 122P电泵用气体检测管检测范围110-2750μg/m³。

GASTEC为了满足用户在气体检测方面的需要，而开发出了电子自动采气泵。用传统的电子吸气泵几乎不能进行有效的采气，因为检测管里的填充试剂密度很高。而GASTEC开发的GSP电泵系列能提供强劲吸力，能满足特定的检测管的取样要求。电泵和检测管组成的新的检测系统能适用于作业环境的检测。

Toluene

NO.122P

C6H5CH3

Specifications

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
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

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

Miscellaneous

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
50ppm	--	1.4×6.7%