免费无码成人AV电影在线播放,精品露脸国产偷人在视频,国产成人免费视频,少妇高潮a片无套内谢麻豆传

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>113SB異丁烷(CH3)3CH氣體檢測管113SB ISOBUTANE 50-1200ppm

異丁烷(CH3)3CH氣體檢測管113SB ISOBUTANE 50-1200ppm

簡要描述:

異丁烷(CH3)3CH氣體檢測管113SB ISOBUTANE 50-1200ppm,2-甲基丙烷 健康危害: 具有弱刺激和麻醉作用。急性中毒:主要表現(xiàn)為頭痛、頭暈、嗜睡、惡心、酒醉狀態(tài),嚴(yán)重者可出現(xiàn)昏迷。慢性影響:出現(xiàn)頭痛、頭暈、睡眠不佳、易疲倦。

更新時間:2025-01-15

在線留言
異丁烷(CH3)3CH氣體檢測管113SB ISOBUTANE 50-1200ppm

異丁烷(CH3)3CH氣體檢測管113SB ISOBUTANE 50-1200ppm

Tube 13SB
1. PERFORMANCE
1) Measuring range :50-1,000 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) Reading :Graduations printed on the tube are calibrated by Hexane at 1 pump stroke
and Pentane concentration is determined by using a conversion chart.
7) Colour change :Orange→Yellowish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
CH3(CH2)3CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
250
400
600
800
1000
1200
1400
100
50
ppm
GAS To pump
113SB C PENTANE
0
500
Benzene〔ppm〕?
FIG.1 Influence of Benzene
Pentane indicating value 〔ppm〕
50 100 0
500
Toluene〔ppm〕?
FIG.2 Influence of Toluene
Pentane indicating value 〔ppm〕
50 100 150
Pentane concentration(ppm)?
13SB Tube reading(ppm)?
(100mR)?
50
100
200
400
600
800
1000
1200
1400
50
100
200
400
600
800
1000
Substance Interference ppm Coexistence
Alcohols Similar stain is produced. 6% Higher readings are given.
Ketones 〃〃〃
Esters 〃〃〃
Aromatic hydrocarbons 〃The bottom of the discoloured layer is stain-
FIG.1,2 ed to Black and higher readings are given.
Paraffin (morefi nth Haynd Cro3)carbons 〃Higher readings are given.

全免费a级毛片免费看无码| 欧美丰满熟妇xxxx性大屁股| 精品人人搡人妻人人玩a片| 中文字幕丰满乱孑伦无码专区| 久久99国产精品久久99| 少妇挑战3个黑人叫声凄惨| 久久成人国产精品| 亚洲精品国产熟女久久久| 在线观看免费视频| 国产精品大白屁股XXXXX| 九九无码人妻一区二区三区| 久久久久久亚洲AV成人无码国产| 竹菊成av人无码亚洲成av无码| 午夜成人理论无码电影在线播放| 少妇高潮喷潮久久久影院| 亚洲午夜av久久久精品影院| 无码观看aaaaaaaa片| 亚洲国产精品一区二区久久| 亚洲一区二区三区国产精华液| 亚洲av永久纯肉无码精品动漫| 亚洲H在线播放在线观看H| 中文字幕无码精品亚洲资源网久久| 久久久久久久久久久精品| 精品无码久久久久久久动漫| 久久精品国产精品亚洲色婷婷| 日本a级毛片| 日本又色又爽又黄的a片吻戏| 久久久久久久久久久国产 | 免费av在线看| 麻豆国产av超爽剧情系列| 99精品国产99久久久久久97| 激情内射日本一区二区三区| 亚洲成熟丰满熟妇高潮xxxxx| 在线精品国产一区二区三区| 97人妻人人揉人人躁人人| 人妻少妇久久久久久97人妻| 日本精品无码特级毛片| 精品久久久久久无码人妻蜜桃| 新狼窝色AV性久久久久久| 午夜福利免视频100集2019| 丰满少妇人妻久久久久久|