国产在线观看免费av电影,黄到下面流水的爽文很污的情话,日韩在线免费观看第一页,国产三级在线观看免费网站

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>158Sα-蒎烯C10H16氣體檢測管158S α-PINENE 20-300ppm

α-蒎烯C10H16氣體檢測管158S α-PINENE 20-300ppm

簡要描述:

α-蒎烯C10H16氣體檢測管158S α-PINENE 20-300ppm,英文名稱 α-Pinene ,2,6,6-Trimethyl-bicyclo[3.1.1]-2-heptene,分子量:136.24,CAS號 80-56-8,健康危害:吸入、攝入或以皮膚吸收對身體有害。高濃度對眼睛、皮膚、粘膜和呼吸道有強(qiáng)烈的刺激作用。中毒表現(xiàn)有燒灼感、咳嗽、喘息、喉炎、氣短、頭痛、惡心和嘔吐??赡芤鹇樽碜饔?。有時損害腎臟。

更新時間:2025-08-28

在線留言
α-蒎烯C10H16氣體檢測管158S α-PINENE 20-300ppm

α-蒎烯C10H16氣體檢測管158S α-PINENE 20-300ppm

Tube 58S
1. PERFORMANCE
1) Measuring range :5-300 ppm 2.5-150 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.5 ppm(200ml)
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :White→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:15% RSD-high : 10%
3. CHEMICAL REACTION
A polymer of Styrene is produced by sulphuric acid.
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
300
250
200
150
100
50
20
5
ppm
GAS To pump
158S STYRENE
Substance ppm Interference ppm Coexistence
Acrylonitrile FIG.1 Tafhfeec atecdc.uracy of readings is not 400 Lower readings are given.
Butadiene 3 Similar stain is produced. 5 Uneven discolouration is produced
FIG.2 and higher readings are given.
Formaldehyde 〃15 Yellowish orange stain is produced
FIG.3 and higher readings are given.
Acetaldehyde 〃350 Similar stain is produced and
higher readings are given.
Methyl alcohol The accuracy of readings is not 0.35% Pale discolouration is produced
affected. and higher readings are given.
Ethyl alcohol 〃0.18% 〃
Ethyl acetate 〃700 〃
Butyl acetate 〃700 〃
(NOTE)
In case of 2 pump strokes, following formula is available for actual concentration.
Actual concentration=1/2×Reading value.
0
200
100
Acrylonitrile Butadiene
FIG.1 Influence of Acrylonitrile Styrene indicating value 〔
ppm〕
500 1000 0
200
100
FIG.2 Influence of Butadiene
Styrene indicating value 〔ppm〕
〔ppm〕? 50 100 0
200
100
Formaldehyde
FIG.3 Influence of Formaldehyde
Styrene indicating value 〔ppm〕
〔ppm〕? 100 200〔ppm〕?
Coexistence
Interference
CH:?CH2 CH–CH2
H2SO4+?

操操操视频在线免费观看| 含着她的花蒂咬到高潮| 美女被鸡巴内射在线观看| 清区二三区国产好的精华液| 亚洲av怡红院影院怡春院| 日本久久久精品国产一区| 鸡插屄成人在线| 亚洲一区波多野结衣在线| 在线看片福利青| 日韩av一区二区在线播放| 精品无码国产一区二区三区51安| 欧美激情亚洲综合视频一区| 午夜影视4747520| 久久人妻av一区二区三区| 五月综合网亚洲乱妇久久| 国产亚洲中文在线精品网址| 国产精品186在线观看在线播放 | 他底下好硬蹭着我想要| 办公室撅着屁股被校长玩弄| 日韩欧美中文一区二区三区| 色偷偷色噜噜狠狠网站久久| 性久久久| 精品国产乱子伦| 日本不卡高清一区二区三区 | 熟女精品国产一区二区三区 | 欧美日韩精品高清区二区| 丰满多毛的大隂户乱| 日本69视频在线免费观看| 被黑人玩得站不起来| 欧美日韩一区二区三区自拍| 女仆穿白丝裸体吃奶玩乳视频| 免费夜色污私人影院在线观看| 亚洲人一区二区中文字幕| 中文字幕在线不卡一区二区| 国产成人久久精品推最新| 午夜观看视频在线观看免费| 亚洲高清一区二区三区不卡| 丝袜美腿精品一区二区三| 久久婷婷精品国产电影网| 欧美色综合人妻在线视频| 女警察双腿大开呻吟|