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產(chǎn)品詳情
簡單介紹:
N,N-二甲基甲酰胺(CH3)2NCHO氣體檢測管 196S
N,N-二甲基甲酰胺(CH3)2NCHO氣體檢測管 196S,N,N-二甲基甲酰胺(CH3)2NCHO氣體檢測管 196S N,N-DIMETHYL FORMAMIDE 1-30ppm,日本光明理化工業(yè)株式會社從1947年開始,在氣體分析領(lǐng)域開拓了六十余年 , 形成了馳名于世的 ” 北川 ” 式氣體檢測管
詳情介紹:
N,N-二甲基甲酰胺(CH3)2NCHO氣體檢測管 196S
1. PERFORMANCE
1) Measuring range :2-30 ppm 1-5 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.2 ppm(200ml)
4) Shelf life :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(0~20℃)(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with alkali, Amine is produced. Further, PH indicator is discoloured by reacting together with
phosphoric acid.
HCON(CH3)2+NaOH→HN(CH3)2
HN(CH3)2+H3PO4→〔(CH3)2NH2〕2HPO4
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
30
25
20
15
10
5
2
100ml
ppm
????
Tube No.
196S N, N-DIMETHYL FORMAMIDE
(NOTE)
When the concectration is below 5 ppm, 2 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration=1/2×Temperature corrected value
Substance Interference ppm Coexistence
Sulphur dioxide FIG.1 Tafhfeec atecdc.uracy of readings is not 200 Lower readings are given.
Carbon dioxide FIG.2 〃0.1% 〃
Ammonia Similar stain is produced. Higher readings are given.
Amines 〃〃〃
Hydrazine 〃〃〃
0
15
20
10
5
Sulphur dioxide〔ppm〕?
FIG.1 Influence of Sulphur dioxide
N,N-Dimethyl fomamide
indicating value 〔ppm〕
100 200 300 400 0
15
20
10
5
Carbon dioxide〔%〕?
FIG.2 Influence of Carbon dioxide
N,N-二甲基甲酰胺(CH3)2NCHO氣體檢測管 196S,N,N-二甲基甲酰胺(CH3)2NCHO氣體檢測管 196S N,N-DIMETHYL FORMAMIDE 1-30ppm,日本光明理化工業(yè)株式會社從1947年開始,在氣體分析領(lǐng)域開拓了六十余年 , 形成了馳名于世的 ” 北川 ” 式氣體檢測管。氣體快速分析法 ” 北川 ” 的歷史就是日本檢測管的歷史 。目前是世界上*大的檢測管生產(chǎn)廠家,也是日本**家通過美國SEI的認(rèn)證,歐盟的認(rèn)證的檢測管廠家。公司不僅有ISO9001:2000的認(rèn)證,還獲得了環(huán)境管理的ISO14001的認(rèn)證。北川式手動氣體采集器AP-20 備有采氣完成指示計 , 可以清楚的判明采氣是否完成 . • 有專門截留玻璃的截留槽 , 以防止檢測管割尖時玻璃片飛濺 . • 有采氣容積為 50 毫升和 100 毫升的兩段式制動卡 . • 采氣器極為小巧 , 并有便于攜帶的皮具包 。
1. PERFORMANCE
1) Measuring range :2-30 ppm 1-5 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.2 ppm(200ml)
4) Shelf life :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(0~20℃)(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with alkali, Amine is produced. Further, PH indicator is discoloured by reacting together with
phosphoric acid.
HCON(CH3)2+NaOH→HN(CH3)2
HN(CH3)2+H3PO4→〔(CH3)2NH2〕2HPO4
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
30
25
20
15
10
5
2
100ml
ppm
????
Tube No.
196S N, N-DIMETHYL FORMAMIDE
(NOTE)
When the concectration is below 5 ppm, 2 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration=1/2×Temperature corrected value
Substance Interference ppm Coexistence
Sulphur dioxide FIG.1 Tafhfeec atecdc.uracy of readings is not 200 Lower readings are given.
Carbon dioxide FIG.2 〃0.1% 〃
Ammonia Similar stain is produced. Higher readings are given.
Amines 〃〃〃
Hydrazine 〃〃〃
0
15
20
10
5
Sulphur dioxide〔ppm〕?
FIG.1 Influence of Sulphur dioxide
N,N-Dimethyl fomamide
indicating value 〔ppm〕
100 200 300 400 0
15
20
10
5
Carbon dioxide〔%〕?
FIG.2 Influence of Carbon dioxide