亚洲精品一区二区三区中文字幕,23部禽亲女小丹慢慢张开双,妺妺窝人体色www在线下载,xxxx丰满小少妇女高潮

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>111U乙酸乙酯氣體檢知管 111U ETHYL ACETATE CH3CO2C2H5 10-1000ppm

乙酸乙酯氣體檢知管 111U ETHYL ACETATE CH3CO2C2H5 10-1000ppm

簡(jiǎn)要描述:

乙酸乙酯氣體檢知管 111U ETHYL ACETATE CH3CO2C2H5 10-1000ppm,氣體檢測(cè)管是在一個(gè)固定長(zhǎng)度和內(nèi)徑的玻璃管內(nèi),裝填一定量的檢測(cè)劑,用塞料加以固定,再將玻璃管兩端熔封。使用時(shí)將管子兩端割斷,讓含有被測(cè)物質(zhì)的氣體定量地通過管子,被測(cè)物質(zhì)即和管中檢測(cè)劑發(fā)生定量化學(xué)反應(yīng),部分檢測(cè)劑被染色,其染色長(zhǎng)度與被測(cè)物濃度成正比,從檢測(cè)管上已印制好的刻度即得知被測(cè)氣體的濃度。

更新時(shí)間:2025-01-08

在線留言
乙酸乙酯氣體檢知管 111U ETHYL ACETATE CH3CO2C2H5 10-1000ppm

乙酸乙酯氣體檢知管 111U ETHYL ACETATE CH3CO2C2H5 10-1000ppm

Tube 11U

1. PERFORMANCE
1) Measuring range :20-1,000 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 :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Yellow→Brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3CO2C2H5+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1000
800
600
400
200
100
50
20
?? ??
111U ETHYL ACETATE
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
1,000 1,330 1,200 1,000 830 700 600 500
800 1,080 950 800 670 550 470 400
600 830 720 600 500 420 380 300
400 570 480 400 330 280 240 200
200 280 240 200 170 140 120 100
100 150 120 100 80 70 60 50
50 70 60 50 40 30 20 10
20 30 25 20 15 10 7 4
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher reading are given.
Esters 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Whole reagent is discoloured to It the top of brown stain is clear,
Paraffin hydrocarbons Pale brown. athffee catcecdu.racy of readings is not
Halogenated hydrocarbons FIG.1 〃〃
0
200
400
600
800
1000
Trichloroethylene〔ppm〕?
FIG.1 Influence of Trichloroethylene
Ethyl acetate indicating value 〔ppm〕
100 200 300

与我同眠在线观看| 把腿张开开被添死去活来| 小雪嗯快啊高潮了喷水了| 被公牛日到了高潮| 疯狂的交换小雅小姿1~6 | 3男s调教玩弄一女m文| 晚上想看点小片片| 女人和公猪交内射| 黑人巨茎大战欧美白妇| 国产精品久久久久精品| 色噜噜狠狠一区二区三区果冻| 国产人妻无码一区二区三区不卡| 波多野结衣在线观看| 高h小月被几个老头调教| 我的变态室友(h)三攻一受| 狠狠色综合7777久夜色撩人| 少妇饥渴偷公乱400章深夜书屋| 不说就继续这样弄你| 久久一区二区三区精华液 | 免费看片的app| 男男做爰猛烈叫床视频gv| 韩国日本欧美大尺寸suv| 黄页网站免费频道大全| 秋霞无码av久久久精品小说| 又大又粗又硬又长| 国产毛片精品一区二区色欲黄a片| 久久人妻少妇嫩草av无码| 国产一区二区三区| 日本免费无码一区二区到五区| 欧美特黄a级高清免费大片a片| 欧美老妇激情xxxxxx按摩| 放荡少妇交换超级乱| 亚洲成熟丰满熟妇高潮xxxxx| 舌尖伸入湿嫩蜜汁呻吟| 一区二区三区在线观看| 丰满多毛的大隂户视频| h动漫在线观看| 白天躁晚上躁天天躁2022| 一本加勒比hezyo无码资源网| 少妇无码一区二区二三区| 国产精品视频在线观看|