甲基氯仿(1,1,1 -三氯乙烷)CH3CCI3气体检测管160S METHYL CHLOROFORM(1,1,1-TRICHLOROETHANE) 15-400ppm，日本光明理化工业株式会社从1947年开始，在气体分析领域开拓了六十余年 , 形成了驰名于世的 ” 北川 ” 式气体检测管。气体快速分析法 ” 北川 ” 的历史就是日本检测管的历史 。目前是世界上*大的检测管生产厂家，也是日本**家通过美国SEI的认证，欧盟的认证的检测管厂家。公司不仅有ISO9001:2000的认证，还获得了环境管理的ISO14001的认证。北川式手动气体采集器AP-20 备有采气完成指示计 , 可以清楚的判明采气是否完成 . • 有专门截留玻璃的截留槽 , 以防止检测管割尖时玻璃片飞溅 . • 有采气容积为 50 毫升和 100 毫升的两段式制动卡 . • 采气器极为小巧 , 并有便于携带的皮具包 。
1. PERFORMANCE
1) Measuring range ：30-400 ppm 15-30 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time ：1.5 minutes/1 pump stroke
3) Detectable limit ：10 ppm(200ml)
4) Shelf life ：3 years(Necessary to store in a refrigerated place ; 0～10℃)
5) Operating temperature ：0～40℃
6) Reading ：Direct reading from the scale calibrated by 1 pump stroke
7) Colour change ：White→Yellow orange
2. RELATIVE STANDARD DEVIATION
RSD-low：15％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
Chlorine is produced by an Oxidizer. By reacting between this Chlorine and o-Toluidine, Orthoquinone is
produced.
CH3CCI3＋Cr3O3＋H2SO4→CI2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
400
350
300
250
200
150
100
50
30
100ml
ppm
GAS To pump
(White)
PRETREAT TUBE DETECTOR TUBE
(Olive)
Tube No.
160S
METHYL CHLOROFORM
(1,1,1-TRICHLOROETHANE)
Substance Interference Coexistence
Halogens Similar stain is produced. Higher readings are given.
Halogenated hydrocarbonsFIG.1,2 〃〃
(NOTE)
When the concentration is below 30 ppm, 2 pump strokes can be used to detremine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration＝1/2×Reading value
Coexistence
Interference
0
400
300
100
200
Methyl bromide〔ppm〕?
FIG.1 Influence of Methyl bromide 1,1,1-Trichloroethane indicating value 〔
ppm〕
50
Coexistence
Interference
0
400
300
100
200
Trichloroethylene〔ppm〕?
FIG.2 Influence of Trichloroethylene
1,1,1-Trichloroethane indicating value 〔ppm〕
100 200