日韩综合在线I91福利社在线观看I最新国产精品一区I国产性猛交╳XXX乱大交Iwww.91爱爱.comIav色播I欧美一级视频I美女网站在线免费观看I777欧美视频

標準品/2,2-二甲基丁烷

標準品/2,2-二甲基丁烷
產品編號:72330
CAS號:75-83-2
規(guī)格:100mg
有效期:2026-09-25
品牌:TMstandard
標準值:99.6%

分享到:

資料下載

2,2-二甲基丁烷

Reference Material

This certificate is designed in accordance with ISO 17034 and ISO Guide 31. This reference material (RM) was designed,produced and verified in accordance with ISO/IEC 17025ISO 17034 and a registered quality management system ISO 9001.

Product Name(產品名稱) 2,2-Dimethylbutane(2,2-二甲基丁烷)
Product Code(產品編號)72330
 
Lot Number(產品批號)-
 
CAS No.75-83-2
 
Mol. Weight(分子量)86.18
 
Mol. Formula(分子式)C6H14
 
Melting Point(熔點)N/A
 
Expiry Date(失效日期)2026-Sep-25
 
Boiling point(沸點)49.7℃(dec.)
 
Appearance(外觀)Liquid
(液體)____________________
 
Storage Temp(存儲條件)(-18±5)℃,Keep in the shade
(-18±5)℃冷凍,置于陰涼處
C E R T I F I E D
Purity
99.6%
 
C E R T I F I E D
Expanded Uncertainty (U)
0.5%
Uncertainty

The certified value(s) and uncertainty(ies) are determined in accordance with ISO 17034 with an 95% confidence level(k=2). Uncertainty is based on the Total Combined Uncertainty, including uncertainties of characterisation, homogeneity and stability testing. Stability values are based on real evidence opposed to simulation.

Traceability

The balances used for gravimetric measurements are calibrated with weights traceable to the national standards. The calibration of the balances is verified annually by an external accredited calibration service. This analysis method has been verified using an approach consistent with ISO 17034:2016 & ISO 17025:2017.

CERTIFICATE    ONQC    SIGNATURE
-RM Release
Method of Identification

GC/FID


Intended Use

This RM is intended for use in a laboratory as a calibration and quality control standard or in method development for analytical techniques.

Storage

This reference material meets the specification stated in this certificate until the expiry date, provided it is stored unopened at the recommended temperature here in. If storage after opening is necessary, the RM should be tightly closed and kept from light and moisture.

Hazards

Read Material Safety Data Sheet (MSDS) and understand any potential hazard(s) prior to the use of this product. All chemicals should be considered potentially hazardous in nature and should only be handled by qualified personnel using established good laboratory practices.

Homogeneity

Random replicate samples of the final packaged RM have been analysed to prove homogeneity compliant with ISO 17034.

Instructions for use

It is recommended to use 1 mg as the minimum sample size and if less material is used, to increase the certified uncertainty by a factor of two for half sample and four for a quarter of sample.Visit the support section of our website technology videos and frequently asked questions.


壇墨質檢
  • 電話

    4008-099-669

    手機

    15806127965

在線客服
主站蜘蛛池模板: 91麻豆精品国产 | 伊人91在线 | 欧美日韩三 | 国产精品合集久久久久青苹果 | 三级做爰高清视频 | 亚洲欧洲国产综合aⅴ无码 亚洲二区在线视频 | 香蕉国产 | 国产一级做a爱片久久毛片a | 日韩午夜伦 | 99热这里只就有精品22 | 四虎网站免费观看视频 | 久久午夜夜伦鲁鲁片免费无码影视 | 国产精品视频500部 好看的91视频 | 亚洲精品久久久久久久小说 | 乱色欧美 | 蜜臀av性久久久久蜜臀aⅴ麻豆 | 国产视频xxxx| 国产又粗又黄又爽又硬的免费视频 | 欧美视频日韩视频 | 国产9色在线 | 日韩 | 猫咪av网| 麻豆精品传媒一二三区艾秋 | 波多野无码黑人在线播放 | 亚洲日韩一页精品发布 | 国产精品亚洲а∨天堂2021 | 蜜桃91麻豆精品一二三区 | 又大又粗又硬又爽黄毛少妇 | 国产在线资源站 | 妺妺窝人体色www在线观看 | 国产亚洲精品超碰热 | 又黄又粗又爽免费观看 | www.色中色 | 中文字幕不卡在线 | 女人爽到高潮视频免费直播 | 肉色超薄丝袜脚交91 | av国産精品毛片一区二区三区 | 五月天丁香综合久久国产 | 色综合欧美亚洲国产 | 午夜大片免费男女爽爽影院 | 欧美性jizz18性欧美肥胖脸 | 亚洲精品一二 | 国产玉足脚交极品在线播放 | 免费观看成年人视频 | 国产精品露脸国语对白 | 性xxx18| 亚洲仺av香蕉久久 | 欧洲一区二区三区 | 老色批av| 久久一区二区三区视频 | 逼逼av网站| 欧美激性欧美激情在线 | 强行无套内谢大学生初次 | 国产又粗又猛又黄又爽视频 | 久久久久国产精品人妻电影 | 久久婷婷五月综合色奶水99啪 | 国产亚洲欧美日韩精品一区二区 | 国产日本一级二级三级 | 日韩伦理在线视频 | 天堂av网手机版 | 久久久久久夜 | 亚洲成熟少妇视频在线观看 | 99在线免费视频 | 一区二区三区在线 | 欧洲 | 夜夜躁狠狠躁日日躁202 | 国产av新搬来的白领女邻居 | 国产成年无码av片在线 | 无码人妻av一二区二区三区 | 亚洲中文字幕日产无码2020 | 啪啪后入内射日韩 | 国产视频日韩 | 国产性自拍 | 新搬来的女邻居麻豆av评分 | 亚洲色欲久久久综合网东京热 | 亚洲成成品网站 | 免费大片黄在线观看视频网站 | 在线观看无码的免费网站 | 欧美福利视频一区二区 | 中国孕妇变态孕交xxxx | 大地资源中文第二页日本 | 成人免费视频高潮潮喷无码 | 精品无人区麻豆乱码1区2区 | 色婷婷综合久色aⅴ五区最新 | 天天色天天操天天 | 国产精品久久久久久久久免费桃花 | 亚洲视频 中文字幕 | 日韩欧美一级 | 麻豆乱码国产一区二区三区 | 最新在线精品国自产拍福利 | 老牛影视av老牛影视av | 欧美三级欧美成人高清www | 黄色成人一级片 | 亚洲大尺度在线 | 日韩欧美高清在线视频 | 亚洲成在人线av中文字幕喷水 | 亚洲欧美日韩综合在线 | 五月天久久久久 | 亚洲精品人成网线在线播放va | 任我爽橹在线视频精品583 | 日本人xxxxxxxxx泡妞 |