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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>162U四氢呋喃THF气体测毒管162U TETRAHYDROFURAN 20-400ppm

四氢呋喃THF气体测毒管162U TETRAHYDROFURAN 20-400ppm

简要描述:

四氢呋喃THF气体测毒管162U TETRAHYDROFURAN 20-400ppm,四氢呋喃是一类杂环有机化合物.它是Z强的极性醚类之一,在化学反应和萃取时用做一种中等极性的溶剂。变成过氧化物。因此,商用的THF经常是用BHT,即2,6一二叔丁基对甲酚来防止氧化。中文名: 四氢呋喃;氧戊环 英文名:Tetrahydrofuran;THF CAS号:109-99-9 RTECS:LU5950000 分子式:C4-H8-O,车间空气卫生标准:中国MAC 300 mg/m3 (1996)

更新时间:2017-07-20

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四氢呋喃THF气体测毒管162U TETRAHYDROFURAN 20-400ppm

四氢呋喃气体测毒管162U TETRAHYDROFURAN 20-400ppm

Tube No.162U
1. PERFORMANCE
1) Measuring range :20-400 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :10 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Pale yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH2-CH2
O+Cr6++H2SO4→Cr3+
CH2-CH2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
ppm
400
300
200
150
100
50
20
GAS To pump
DEHUMIDIFIER
(White)
162U TETRAHYDROFURAN
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher readings are given.
Esters Whole reagent is changed to Black. 〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 20℃ 30℃ 40℃
(ppm) (50°F) (68°F) (86°F) (104°F)
500 680 500 390 320
400 540 400 320 250
300 400 300 240 190
200 260 200 160 130
150 190 150 120 90
100 130 100 80 60
50 60 50 40 30
20 30 20 20 10

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