夜夜爽夜夜叫夜夜高潮漏水,13小男生GAY自慰脱裤子,亚洲国产精品美女久久久久AV,中文字幕丰满乱孑伦无码专区

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>119U甲醇?xì)怏w檢測管119U METHYL ALCOHOL 5-300ppm

甲醇?xì)怏w檢測管119U METHYL ALCOHOL 5-300ppm

簡要描述:

ClCH2CH2OH 119U METHYL ALCOHOL(METHANOL) (+) 氯乙醇Ethylenechlorohydrin 甲醇?xì)怏w檢測管119U METHYL ALCOHOL 5-300ppm,所謂大氣污染的綜合防治,就是從區(qū)域環(huán)境的整體出發(fā),充分考慮該地區(qū)的環(huán)境特征,對(duì)所有能夠影響大氣質(zhì)量的各項(xiàng)因素作全面、系統(tǒng)的分析,充分利用環(huán)境的自凈能力,綜合運(yùn)用各種防治大氣污染的技術(shù)措施,并在這些措施的基礎(chǔ)上制定Z佳的防治措施,以達(dá)到控制區(qū)域性大氣環(huán)境質(zhì)量、消除或減輕大氣污染的目的。

更新時(shí)間:2024-12-18

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
甲醇?xì)怏w檢測管119U METHYL ALCOHOL 5-300ppm

甲醇?xì)怏w檢測管119U METHYL ALCOHOL 5-300ppm

Tube 19U

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 :5 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(0~20℃)(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Potassium dichromate is reduced
CH3OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
20
50
100
200
400
600
800
1000
ppm
GAS To pump
DEHUMIDIFIER
(White)
119U
METHYL ALCOHOL
(METHANOL)
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Esters FIG.2 〃
Paraffin (morefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Ketones 〃〃
Halogenated hydrocarbons 〃〃
0
500
1000
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Methanol indicating value 〔ppm〕
500
Coexistence
Interference
0
500
1000
Ethyl acetate〔ppm〕?
FIG.2 Influence of Ethyl acetate
Methanol indicating value 〔ppm〕
500
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20-40℃
(ppm) (32°F) (50°F) (68-104°F)
1000 1200 1100 1000
800 960 880 800
600 600 660 600
400 480 440 400
200 240 220 200
100 120 110 100
50 60 50 50