亚洲中文字幕啪啪一区二区,看亚洲欧洲在线视频,国产福利不卡在线视频,欧美日韩一区二区人妻

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>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(jiǎn)要描述:

磷化氫PH3氣體檢知管121SD PHOSPHINE 0.25-20.0ppm,比長(zhǎng)式氣體檢測(cè)管原理及使用方法,原理:CO、CO2、H2S、O2、SO2、NH3等檢測(cè)管的基本測(cè)定原理為線性比色法,即被測(cè)氣體通過(guò)檢測(cè)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(zhǎng)度與被測(cè)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(guò)40℃,玻璃制品,小心輕放。

更新時(shí)間:2025-01-02

發(fā)郵件給我們:554328895@qq.com

分享到: 1
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 〃〃

亚洲日韩欧美制服第一页| 国产黄色三级三级三级看三级| 国产欧美一区二区综合日本| 欧美日韩精品一区二区三区激情在线| 日韩欧美精品在线中文字幕| 神马午夜久久久久久| 日本成人在线不卡视频| 亚洲一区二区三区中文字幕手机在线| 免费看亚洲精品大片| 亚洲精品日韩在线丰满| 亚洲av无码网站yw尤物| 韩彩英三级无删减视频| 韩国三级电影视频网站| 国产麻豆精品三级在线播放| 国产日韩欧美久久综合网| 99亚洲视频一区二区| 精品无码中文字幕在线| 成人H动漫精品一区二区| 亚洲国产电影一区二区三区| 国产一级二级三级在线观看| 日日摸夜夜摸狠狠摸婷婷| 黑人操亚洲女一级黄色片| 久久久久人妻精品明星换脸| 日本不卡久久伊人麻豆传媒| 亚洲最大国产精品一区| 日本成人精品在线播放| 亚洲欧美日韩国产精品专区| 亚洲欧美另类色视频| 欧美日韩一级片在线| 精品国产免费一区二区久久| 操久久久久久久久久久久久久久久久| 激情久久三级视频网站| 日韩一区二区三区射精合集| 伊人精品久久久久7777| 国产欧美在线观看精品一区污| 久久久久久999一区二区三区| 亚洲精品国自产在线| 欧美日韩一区二区三区大片在线观看| 国产av剧情亚洲精品| 亚洲欧洲日韩综合网站| 国产精品欧美大片在线观看|