夜夜爽夜夜叫夜夜高潮漏水,13小男生GAY自慰脱裤子,亚洲国产精品美女久久久久AV,中文字幕丰满乱孑伦无码专区

產(chǎn)品列表PRODUCTS LIST

首頁>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>122SC環(huán)氧乙烷CH2CH2O氣體檢知管122SC ETHYLENE OXIDE 1-15ppm

環(huán)氧乙烷CH2CH2O氣體檢知管122SC ETHYLENE OXIDE 1-15ppm

簡要描述:

環(huán)氧乙烷CH2CH2O氣體檢知管122SC ETHYLENE OXIDE 1-15ppm,負(fù)壓式采樣器設(shè)計的特點是可免去正壓方式在推入時須掌握時間的麻煩和人工操作產(chǎn)生的人為誤差,測量精度可以有較大提高。設(shè)有切割孔和膠嘴,省去砂輪片切割和加接膠管的煩瑣。采樣器一次導(dǎo)氣量總?cè)莘e100ml,1/2檔位50ml。

更新時間:2024-12-18

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
環(huán)氧乙烷CH2CH2O氣體檢知管122SC ETHYLENE OXIDE 1-15ppm

環(huán)氧乙烷CH2CH2O氣體檢知管122SC ETHYLENE OXIDE 1-15ppm

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