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>121SD磷化氫PH3氣體檢知管121SD PHOSPHINE 0.25-20.0ppm

磷化氫PH3氣體檢知管121SD PHOSPHINE 0.25-20.0ppm

簡要描述:

磷化氫PH3氣體檢知管121SD PHOSPHINE 0.25-20.0ppm,比長式氣體檢測管原理及使用方法,原理:CO、CO2、H2S、O2、SO2、NH3等檢測管的基本測定原理為線性比色法,即被測氣體通過檢測管與指示膠發(fā)生有色反應(yīng),形成變色層(變色柱),變色層的長度與被測氣體的濃度成正比。本品應(yīng)避光保存于陰涼干燥處,嚴(yán)禁日光照射,保存溫度不超過40℃,玻璃制品,小心輕放。

更新時間:2025-01-15

在線留言
磷化氫PH3氣體檢知管121SD PHOSPHINE 0.25-20.0ppm

磷化氫PH3氣體檢知管121SD PHOSPHINE 0.25-20.0ppm

Tube 21SD
1. PERFORMANCE
1) Measuring range :0.5-10.0 ppm 0.25-0.5 ppm 1-20 ppm
Number of pump strokes 1(100ml) 2(200ml) 1/2(50ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.1 ppm(200ml)
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 orange→Brownish purple
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
By reacting with Mercuric chloride(II), Hydrogen chloride is produced and PH indicator is discoloured.
PH3+3HgCI2→P(HgCI)3+3HCI
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
8.0
10.0
6.0
4.0
2.0
1.0
0.5
ppm
100ml
GAS To pump
121SD PHOSPHINE
(NOTE)
1)When the concentration is below 0.5ppm, 2 pump strokes can be used to determine the
lower concentration. Following formula is available for the actual concentration.
Actual concentration=1/2×Reading value
In case of 1/2 pump strokes, following formula is available for actual concentration.
Actual=2×Reading value
2) Read the concentration rapidly because the discoloured layer will be faded gradually.
Substance Interference ppm Coexistence
Ammonia 60 From gas inlet side of discoloured
layer, the discolouration is faded.
Hydrogen selenide Similar stain is produced. Higher readings are given.
Nickel carbonyl 〃〃
Arsine 〃〃

fba欧美专线| 桃花影院在线观看| 国产又a又黄又潮娇喘视频| 日本免费无码一区二区到五区| 四虎国产精品永久地址| 成人免费a级毛片无码片| 69SEX久久精品国产麻豆| 天堂av无码大芭蕉伊人av不卡| 色老头av亚洲一区二区男男| 九九无码人妻一区二区三区| 亚洲 暴爽 AV人人爽日日碰| 性色a码一区二区三区天美传媒| 日韩精品无码专区免费播放| 亚洲熟妇久久国产精品| 99久热在线精品视频观看| 欧美性xxxxx极品少妇| 特黄a级毛片免费视频| 日韩精品久久无码中文字幕| 最近中文字幕大全免费版在线| 国产精品久久久久9999吃药| 狠狠噜天天噜日日噜视频麻豆| 亚洲男人天堂| 精品人妻人人做人人爽夜夜爽| 久久久精品午夜免费不卡| 久久久久久久久久久国产| 国内大量揄拍情侣在线视频99| 免费a级毛片无码免费视频120软件 | 欧美一性一乱一交一视频| 国产又粗又猛又爽又黄的视频| 老太做爰xxxxx视频| 18videosex性欧美69| 污污污污污污www网站免费| 99国产欧美久久久精品| 麻豆传煤入口免费进入2023| 日韩精品成人无码专区免费| 性欧美xxxxx极品少妇| 强开小婷嫩苞又嫩又紧视频韩国| 一个人在线观看免费的视频完整版 | 亚洲日产韩国一二三四区| 欧美老人巨大XXXX做受| 麻花传媒剧在线mv免费观看|