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首页>产品中心>日本光明北川式气体检测管>气体快速检测管>122SC丙二醇CH3CH(OH)CH2OH气体检测管122SC Propylene glycol 5-50

丙二醇CH3CH(OH)CH2OH气体检测管122SC Propylene glycol 5-50

简要描述:

丙二醇CH3CH(OH)CH2OH气体检测管122SC Propylene glycol 5-50ppm,气体检测管特点⑤使用安全:使用时手动操作,无需要电源、热源,在有易燃易爆气体存在的场所能安全使用。 ⑥价格低廉、携带方便:该产品虽然是一次性使用,但与其它化学和仪器方法测量的总价格比起来,还是便宜,而且又不需要维护修理,则更显得低廉。检测 管体积小,重量轻,便于操作人员在各种环境下使用。 ⑦识别性强。可以测定各种有害气体,并可实现在一定程度上的选择性识别。

更新时间:2017-07-23

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丙二醇CH3CH(OH)CH2OH气体检测管122SC Propylene glycol 5-50

丙二醇CH3CH(OH)CH2OH气体检测管122SC Propylene glycol 5-50ppm

Tube No.122SC

1. PERFORMANCE
1) Measuring range :1-15 ppm
Number of pump strokes :3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :0.5 ppm
4) Shelf life :3 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Pale pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.: 5% RSD-high:5%
3. CHEMICAL REACTION
By decomposing with an Oxidizer, Formic acid is produced and PH indicator is discoloured.
CH2CH2O+H2SO4→HOCH2CH2OH
HOCH2CH2OH+HIO4→2HCHO+HIO3+H2
HCHO+HIO4+H2SO4→HCOOH+HIO3
HCOOH+NaOH→Na(HCOO)+O2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
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GAS 􀀀􀀀 To pump
DETECTOR TUBE
(White)
PRETREAT TUBE
15
10
5
1
ppm
300
ml
122SC ETHYLENE OXIDE
Substance Interference Coexistence
Aldehydes FIG.2 Similar stain is produced. Higher readings are given.
Sulphur dioxide Pale yellow stain is produced. 〃
Hydrogen sulphide FIG.1 〃〃
0
20
10
Hydrogen sulphide〔ppm〕�
FIG.1 Influence of Hydrogen sulphide
Ethylene oxide indicating value 〔ppm〕
1 2
Coexistence
Interference
0
20
10
Formaldehyde〔ppm〕�
FIG.2 Influence of Formaldehyde
Ethylene oxide indicating value 〔ppm〕
10 20
Coexistence
Interference
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15-25℃ 30℃ 40℃
(ppm) (50°F) (59°F) (86°F) (77°F)
15 19 15 13 10
10 12.5 10 8.5 7
5 6 5 4 3.5
1 1 1 1 1

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