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+?

久久久久久久久久久78| 中国极品艳妇av少妇hd| 好吊色欧美一区二区三区四区| 亚洲综合另类小说色区大陆| 国产xxnxx精品视频| 一区二区三区日韩亚洲欧美| 色偷偷噜噜噜亚洲男人| 亚洲熟伦熟女新五十路熟| 九九在线视频热线视频精选| 日韩欧美在线观看网址导航| 久久国产精品乱子乱精品| 欧美国产一级二级三级在线| 亚州无码五月天| 日本欧美一区二区三区乱码| 巜饥渴的少妇在线观看| 亚洲精品国产77777| 精品国产制服丝袜高跟| 极品尤物一区二区三区小说| 少妇特黄a一区二区三区| 日韩av一区二区三区亚洲| 年轻漂亮的后玛| 国产精品福利午夜h视频| 精品人妻一区二区三区中文| 国产精品乱码在线观看| 亚洲色成WWW永久网站| 调教 sm 重口 h文 hy| 欧美黄片一区二区在线观看| 国产精品性色av综合网| 精品无码一区二区三区在线| 无码h黄肉3d动漫在线观看| 丰满岳跪趴高撅肥臀| 天堂av一区二区在线播放| 少妇与大狼拘作爱| 婷婷国产亚洲性色av网站| 免费AV在线看| 波多野一区二区三区在线| 亚洲另类欧美小说图片区| 久久999欧美日韩国产| 欧美外国理久久| 欧亚日韩精品一区二区在线| 日韩第一页中文在线视频|