丰满岳乱妇在线观看中字无码,漂亮的保姆5在线观看中文,把我绑在床头上夹奶头视频,免费人做人爱完整版视频

產(chǎn)品列表PRODUCTS LIST

首頁>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>167S硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

簡要描述:

硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm,急性中毒:接觸數(shù)分鐘至3小時內(nèi),陸續(xù)出現(xiàn)中毒癥狀:流淚、回痛、咳嗽,伴有胸悶、胸痛。重者進(jìn)一步發(fā)展為化學(xué)性肺炎或中毒性肺水腫,患者出現(xiàn)呼吸困難,心跳加快,面色蒼白,皮膚粘膜紫紺。接觸本品可引起皮疹?,F(xiàn)場應(yīng)急監(jiān)測方法:氣體檢測管法

更新時間:2025-01-15

在線留言
硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

Tube 67S
1. PERFORMANCE
1) Measuring range :5-600 ppm 1-120 ppm
Number of pump strokes 1(100ml) 5(500ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :0.5 ppm(500ml)
4) Shelf life :1 year
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :Pale yellow→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
By reacting with Gold chloride(III), Colloidal gold is liberated.
H2Se+AuCI3(III)→Au
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
600
550
500
450
400
350
300
250
200
150
100
50
10
5
100ml
ppm
????
????
167S HYDROGEN SELENIDE
Substance ppm Interference ppm Coexistence
Acetylene 3% Higher readings are given.
Carbon monoxide 0.1% 〃
Sulphur dioxide Pale blue stain is produced. 〃
Hydrogen sulphide 10 Brown stain is produced. 〃
Mercury vapours Similar stain is produced.
Arsine 〃10 〃
Iron carbonyl 〃10 〃
Nickel carbonyl 〃10 〃
(NOTE)
When the concentration is below 5 ppm, 5 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration=1/5×Reading value

精品乱子伦一区二区三区| 法国精品性xxxx| 人妻夜夜爽天天爽三区麻豆av网站| 色欲综合一区二区三区| 国产成人精品一区二三区| 国产剧情av精品迷奷| 国产精品无码一区二区三级| 天码av无码一区二区三区四区| 久久婷婷人人澡人人爽人人爱| 粗大的内捧猛烈进出小视频| 成人午夜亚洲精品无码网站| 久久久久久亚洲精品中文字幕| 无码粉嫩小泬无套在线观看| 一区二区三区无码被窝影院| 国产亚洲精品久久久久秋霞 | 欧美AV人人妻AV人人爽苍井空| 精品久久欧美熟妇www| 久久精品国产成人| 国产精品成人国产乱| xxxxxl日本17上线| japanesetube日本护士高潮| 久久亚洲AV成人无码| 久久精品无码一区二区三区免费| 好吊色欧美一区二区三区四区| 少妇被爽到高潮在线观看| 国产一区二三区好的精华液| 亚洲成A人一区二区三区| 亚洲精品~无码抽插| 茄子视频app色版 永久免费| 男人和女人亲吻视频| 亚洲色成人网站www永久四虎| 精品日本一区二区三区在线观看| 伊人热热久久原色播放www| 国产av一区二区三区| 国产午夜福利片| 亚洲av无码成人精品区| 国产一区二区波多野结衣| 国产成人一区二区三区影院| AV天堂午夜精品一区| 亚洲国产成人精品女人久久久| 人妻少妇精品无码专区二区|