亚洲综合av一区二区三区,亚洲天天做日日做天天爽,我和小表妺在车上的乱h,无码精品a∨在线观看中文

產(chǎn)品列表PRODUCTS LIST

首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測(cè)管>氣體快速檢測(cè)管>216S正戊酸CH3(CH2)3COOH氣體檢測(cè)管216S N-VALERIC ACID 3-70ppm

正戊酸CH3(CH2)3COOH氣體檢測(cè)管216S N-VALERIC ACID 3-70ppm

簡(jiǎn)要描述:

正戊酸CH3(CH2)3COOH氣體檢測(cè)管216S N-VALERIC ACID 3-70ppm,中文名稱: (正)戊酸,英文名稱: n-valeric acid,健康危害: 吸入、攝入或經(jīng)皮膚吸收后對(duì)身體有害??梢鹱苽?。對(duì)眼睛、皮膚、粘膜和上呼吸道具有強(qiáng)烈刺激作用。吸入后,可引起喉、支氣管的炎癥、水腫、痙攣,化學(xué)性肺炎或肺水腫。接觸后可引起燒灼感、咳嗽、喘息、氣短、頭痛、惡心和嘔吐等。

更新時(shí)間:2024-11-28

在線留言
正戊酸CH3(CH2)3COOH氣體檢測(cè)管216S N-VALERIC ACID 3-70ppm

正戊酸CH3(CH2)3COOH氣體檢測(cè)管216S N-VALERIC ACID 3-70ppm

Tube No.216S
1. PERFORMANCE
1) Measuring range :1-50 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :0.2 ppm
4) Shelf life :3 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 Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with alkali,PH indicator is discoloured.
CH3COOH+NaOH→CH3CO2Na+H2O
4. CALIBRATION OF THE TUBE
DIFFUSION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
3
1
ppm
100ml
GAS To pump
5
10
20
30
40
50
216S ACETIC ACID
Substance ppm Interference ppm Coexistence
Sulphur dioxide Similar stain is produced. 1/20×Acetic Higher readings are given.
acid
Nitrogen dioxide 300 〃10 Unclear stain is produced.
Hydrogen chloride Pink stain is produced. 2×Acetic FIG.1 acid Higher readings are given.
Chlorine FIG.2 Yellow stain is produced. 5 〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
50 63 57 50 45 40
40 50 45 40 36 31
30 37 33 30 27 23
20 24 22 20 18 16
10 12 11 10 9 8
5 6 6 5 5 4
3 4 4 3 3 2
1 1 1 1 1 1
0
50
30
20
40
10
Hydrogen chloride〔ppm〕?
FIG.1 Influence of Hydrogen chloride
Acetic acid indicating value 〔ppm〕
100 200 300
Coexistence
Interference
0
60
20
40
Chlorine〔ppm〕?
FIG.2 Influence of Chlorine
Acetic acid indicating value 〔ppm〕
250 500
Coexistence
Interference

少妇愉情理伦片高潮日本| 你的棒棒可以桶桶我的下水道| 日本熟妇乱妇熟色a片蜜桃| 欧美粗大猛烈18p| 无码人妻精品一区二区三区夜夜嗨| 国产网红女主播精品视频| 亚洲精品一区久久久久久| aaaaa级少妇高潮大片免费看| 性久久久久久| 99这里只有精品| 白嫩光屁股bbbbbbbbb| 握住校花两团雪乳高h| 中文精品久久久久人妻不卡| 99热久久精里都是精品6| 色婷婷av国产精品欧美毛片| 久久 国产 尿 小便 嘘嘘| 亚洲欧美日韩精品久久亚洲区| 国产高清无密码一区二区三区| 征服了同学的贵妇麻麻| 亚洲精品国产精华液| 色妞ww精品视频7777| 一本色道无码道dvd在线观看| 国产黄色视频| 少妇性饥渴无码a区免费| 亚洲变态另类一区二区三区| 日产乱码一二三区别免费| 女人与拘的交酡过程| 调教yin荡女友系列合集| 国产精品美女久久久久| 色99蜜臀av无码波多野结衣| 日韩精品福利片午夜免费观着| jealousvue成熟五十| 色戒电影未删减完整版免费观看| 国产成人精品一区二区三区视频| 哦┅┅快┅┅用力啊熟妇| 又硬又粗进去好爽a片看| 清冷医生h打开腿乖听话| 日本肥熟妇搡bbbb搡bbbb| 极致凌虐被迫高潮sm在线观看| 国产亚洲精品精品精品| 故意穿暴露被强好爽h|