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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>171SB甲醛HCHO气体检知管171SB FORMALDEHYDE 1-35ppm

甲醛HCHO气体检知管171SB FORMALDEHYDE 1-35ppm

简要描述:

甲醛HCHO气体检知管171SB FORMALDEHYDE 1-35ppm,甲醛对健康危害主要有以下几个方面:a. 刺激作用: 甲醛的主要危害表现为对皮肤粘膜的刺激作用,甲醛是原浆毒物质,能与蛋白质结合、高浓度吸入时出现呼吸道严重的刺激和水肿、眼刺激、头痛。b. 致敏作用: 皮肤直接接触甲醛可引起过敏性皮炎、色斑、坏死,吸入高浓度甲醛时可诱发支气管哮喘。c. 致突变作用:高浓度甲醛还是一种基因毒性物质。实验动物在实验室高浓度吸入的情况下,可引起鼻咽肿瘤。

更新时间:2017-08-13

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甲醛HCHO气体检知管171SB FORMALDEHYDE 1-35ppm

甲醛HCHO气体检知管171SB FORMALDEHYDE 1-35ppm

Tube No.171SB
1. PERFORMANCE
1) Measuring range :1-35 ppm
Number of pump strokes :3(300ml)
2) Sampling time :3 minutes/3 pump strokes
3) Detectable limit :0.5 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 3 pump strokes
7) Colour change :White→Brownish orange
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:15% RSD-high:15%
3. CHEMICAL REACTION
By reacting with Aromatic compounds, a polymer is produced.
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
DETECTOR TUBE
(White)
PRETREAT TUBE
35
30
25
20
15
10
7 5 3
1
ppm
171SB FORMALDEHYDE
Substance Interference ppm Coexistence
Styrene Similar stain is produced. Higher readings are given.
Trichloroethylene 500 〃
Ethyl acetate 1,000 〃
Ether 1,000 〃
Acetaldehyde Similar stain is produced. 1 〃
HCHO+  +H2SO4 n+H2O
C
H
H

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