成人毛片无码一区二区三区,亚洲精品成人无码中文毛片,亚洲国产精品尤物yw在线观看,人妻互换精品一区二区

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>176S甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

簡要描述:

甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm,Measuring range :4-40 ppm 2-20 ppm,碘化鉀/碘甲烷氣體檢測管,國家標準,中國職業(yè)接觸限值(GBZ 2—2002)Z高容許濃度(MAC)時間加權平均容許濃度(TWA)10 mg/m3,短時間接觸容許濃度(S)25 mg/m3,www.yd666.com

更新時間:2025-01-15

在線留言
甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

Tube 76S

1. PERFORMANCE
1) Measuring range :4-40 ppm 2-20 ppm
Number of pump strokes 2(200ml) 4(400ml)
2) Sampling time :4 minutes/2 pump strokes
3) Detectable limit :0.5 ppm(400ml)
4) Shelf life :8 months
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 2 pump strokes
8) Colour change :White→Grey
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Iodine pentoxide is reduced.
CH3I+I2O5+H2SO4→I2+CO2+H2O
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
40
35
30
25
20
15
10
468
ppm
GAS To pump
(Yellow)
PRETREAT TUBE DETECTOR TUBE
176S METHYL IODIDE
Substance Interference ppm Coexistence
Acetone Similar stain is produced. 700 Higher readings are given.
Hydrogen sulphide FIG.1 〃7 〃
Hexane FIG.2 〃500 〃
Benzene 2 Lower readings are given.
Toluene 2 〃
Xylene 2 〃
Halogenated hydrocarbons Double-layer stain is produced and
accurate readings are affected.
0
30
20
Hydrogen sulphide〔ppm〕?
FIG.1 Influence of Hydrogen sulphide
Methyl iodide
indicating value 〔ppm〕
510 15 20 25 3035
10
0
20
Hexane〔ppm〕?
FIG.2 Influence of Hexane
Methyl iodide
indicating value 〔ppm〕
500 1000 1500 2000 2500
10
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
40 - - 40 46 52
35 - 52 35 42 49
30 54 39 30 37 44
25 37 27 25 25 23
20 30 22 20 23 30
15 24 17 15 17 24
10 17 11 10 12 17
5 10 5 5 5 10
(NOTE)
In case of 4 pump strokes, following formula is available for the actual concentration.
Actual concentration = 1/2 × Tmperature corrected value

成人综合伊人五月婷久久| 久亚洲一线产区二线产区三线产区| 日本XXXX18裸体XXXX| 欧美人妻日韩精品| 波多野结衣中文字幕一区二区三区| 国产精品九九九国产盗摄| 国产粉嫩高中无套进入| 风韵诱人的岳欲仙欲死在线观看| 亚洲人成色在线观看| 国产精品露脸国语对白| 久久久精品久久久久久96| 娇妻系列交换27部多p在线观看| 久久婷婷五月综合色国产香蕉| 妻子6免费完整版电影| 中文在线っと好きだっ最新版| 欧美猛男军警gay自慰| 妻子的秘密免费读全文| 亚洲AV舒服丰满在线播放| 亚洲国产成人久久精品| 国产真实露脸乱子伦| 熟女少妇精品一区二区| 亚洲の无码 国产の无码| 欧美丰满熟妇xxxx性大屁股| 亚洲av片在线观看| 国产激情无码一区二区APP| 欧卅无码a片少妇人妻久久尤物| 国产午夜福利100集发布| 国产乱人偷精品人妻a片| 国产精品岛国久久久久| 天天爽夜夜爽夜夜爽精品视频| 邻居的色诱中文字幕| 真人高清实拍女处被破的视频| 欧美精品中文字幕亚洲专区| 17岁日本免费完整版观看| 亚洲人成亚洲人成在线观看| 亚洲国产精品无码久久一线| 大乳丰满人妻中文字幕日本| 年轻漂亮岳每4观看| 久热爱精品视频在线| 人人爽久久久噜人人看| 桃色av久久无码线观看|