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首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測(cè)管>氣體快速檢測(cè)管>122SC環(huán)氧乙烷CH3CHCH2O氣體檢測(cè)管122SC ETHYLENE OXIDE 3-70ppm

環(huán)氧乙烷CH3CHCH2O氣體檢測(cè)管122SC ETHYLENE OXIDE 3-70ppm

簡(jiǎn)要描述:

環(huán)氧乙烷CH3CHCH2O氣體檢測(cè)管122SC ETHYLENE OXIDE 3-70ppm,檢測(cè)管特點(diǎn): (1)對(duì)大多存在可燃性易爆氣體、有毒氣體及窒息性氣體,放射性物質(zhì)的放射性都可定量測(cè)量 ①操作簡(jiǎn)便:將檢測(cè)管插在手動(dòng)氣泵上抽(100ml)定量氣體即可。 ②分析速度快:一般僅需幾十秒至幾分鐘即可得知結(jié)果,其分析速度是任何化學(xué)分析和儀器方法不能比擬的。 ③測(cè)量精度高:該方法準(zhǔn)確度誤差一般有效量程為7%~15%, ④適應(yīng)性好:每種檢測(cè)管都有1種到幾種不等的大小范圍的選擇。

更新時(shí)間:2025-01-08

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環(huán)氧乙烷CH3CHCH2O氣體檢測(cè)管122SC ETHYLENE OXIDE 3-70ppm

環(huán)氧乙烷CH3CHCH2O氣體檢測(cè)管122SC ETHYLENE OXIDE 3-70ppm

Tube 22SC

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
????
????
????
????
????
????
????
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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