精品国产天线2019,色综合久久无码五十路人妻,亚洲熟悉妇女XXX妇女AV,亚洲H在线播放在线观看H

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>130U甲硫醇CH3SH氣體檢測管130U METHYL MERCAPTAN 0.5-10ppm

甲硫醇CH3SH氣體檢測管130U METHYL MERCAPTAN 0.5-10ppm

簡要描述:

甲硫醇CH3SH氣體檢測管130U METHYL MERCAPTAN 0.5-10ppm,甲硫醇又名硫氫甲烷、甲烷硫醇,是一種無色氣體,作為一種重要的有機會成中間體,主要用于合成材料、農(nóng)藥和醫(yī)藥等方面。健康危害: 吸入后可引起頭痛及不同程度的麻醉作用;高濃度吸入可引起呼吸麻痹而死亡。環(huán)境危害:對環(huán)境有危害,對水體可造成污染。

更新時間:2025-03-11

在線留言
甲硫醇CH3SH氣體檢測管130U METHYL MERCAPTAN 0.5-10ppm

甲硫醇CH3SH氣體檢測管130U METHYL MERCAPTAN 0.5-10ppm

Tube 30U
1. PERFORMANCE
1) Measuring range :1-10 ppm 0.5-5 ppm
Number of pump strokes :1/2(50ml) 1(100ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.2 ppm(100ml)
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by Methyl mercaptan at 1 pump stroke
7) Colour change :Pale yellow→Pink
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with Mercuric cholride, Hydrogen chloride is produced and PH indicator is discoloured.
C2H5SH+HgCI2→RS(HgCI)+HCI
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
????
????
??????????
??????????
????
GAS ???? To pump
5
4
3
2
1
0.5
100ml
ppm
(White)
DEHUMIDIFIER
130U ETHYL MERCAPTAN
Substance Interference Coexistence
Arsine Similar stain is produced. Higher readings are given.
Hydrogen selenide 〃〃
Phosphine 〃〃
Hydrogen sulphide 〃
Hydrogen cyanide Whole reagent is changed to Red. 〃
Whole reagent is changed to
Sulphur dioxide Pale red, but Pink stain indicates
Mercaptans conc.
(NOTE)
In case of 1 / 2 pump strokes, following formula is available for the actual concentration.
Actual concentration=2×Reading value

 
久久久久亚洲精品无码蜜桃| 少妇特黄A片一区二区三区蜜桃 | 永久在线观看免费视频 | 狂野欧美性猛交免费视频| 国产睡熟迷奷系列精品| 欧美牲交a欧美牲交aⅴ一| 亚洲综合色视频在线观看 | 人妻激情偷乱视频一区二区三区| 国产精品亚洲AV电影在线观看| 精品欧洲av无码一区二区| 国产精品久久久久久亚洲按摩蜜桃 | 欧美 大陆 偷拍 精品| 无码人妻久久一区二区三区| 色-情-伦-理一区二区三区| 国产精品露脸国语对白| 亚洲AV永久无码国产精品久久 | 国产美女被爽到高潮免费A片| 国产无遮挡裸体免费视频a片| 欧美性生交xxxxx无码| 亚洲AV无码专区亚洲AV伊甸园| 国产又黄又大又粗的视频| 人妻熟女ΑⅤ一区二区三区| 国产精品亚洲日韩AV在线| 亚洲AV无码国产精品久久不卡| 亚洲精品国产精品国自产观看| 久久永久免费人妻精品直播| 直接观看黄网站免费视频| 末成年女av片一区二区| 亚洲国产一区二区三区| 丁香色婷婷国产精品视频| 麻豆国产人妻欲求不满谁演的| 亚洲人成中文字幕在线观看| 国产成人无码精品久久久免费| 国产精品对白刺激久久久| 亚洲AV影院一区二区三区| 99精品无码一区二区毛片免费| 高雅人妻被迫沦为玩物| 免费国偷自产拍精品视频| 久久久久久精品免费免费999| 国产精品久久久久AAAA| 18禁免费无码无遮挡不卡网站 |