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: 国产精品美脚玉足脚交 | 国产大学生av | 国产成人亚洲综合色婷婷 | 夜夜嗨av一区二区三区 | 91精品国产入口在线 | 欧美精品一区二区a片免费 蜜桃av无码免费看永久 | 国产人妻aⅴ色偷 | 国产成人精品综合在线观看 | 国产精品久久久影视青草 | 人人爱夜夜爽日日做蜜桃 | 蜜桃视频在线观看免费网址入口 | 日韩欧美在线视频免费观看 | 1024国产精品| 亚洲高清成人 | 免费国产午夜高清在线视频 | 少妇愉情理伦片高潮日本 | 成人免费高清在线观看 | 成人短视频在线观看 | 国产成人午夜在线视频a站 奇米777四色在线精品 | 国内自拍第一页 | 久久精品桃花av综合天堂 | 免费女人裸体视频无遮挡免费网站 | 久久久久久久久精 | 日韩欧美综合在线 | 91网站免费| 色婷婷av一区二区三区gif | 色一情一乱一伦一区二区三欧美 | 午夜性色福利在线视频18观看 | 国产在线视频福利 | 国产自在自线午夜精品视频 | 欧美日本国产欧美日本韩国99 | 人妻少妇被猛烈进入中文字幕 | 国产三级网站 | 免费无码国产欧美久久18 | 中国超帅年轻小鲜肉自慰 | 亚洲图片在线 | 国产a免费视频 | 哈利波特3在线观看免费版英文版 | 一二三四社区在线中文视频 | 99免费在线播放99久久免费 | 亚洲v国产v欧美v久久久久久 | 国产成人综合久久精品推最新 | 热99在线| 丰满熟女人妻中文字幕免费 | 一级黄色片在线免费观看 | 日韩毛片在线视频 | 秋霞午夜久久午夜精品 | 人妻夜夜爽天天爽三区 | 大地资源中文在线观看官网第二页 | 2020国产激情视频在线观看 | 色综合天天综合网中文 | 99久无码中文字幕一本久道 | yy8090新视觉午夜毛片 | 国产一区二区三区日韩精品 | 成人免费看片'在线观看 | 在线人视频观看免费 | 午夜精品影视国产一区在线麻豆 | 久久婷香 | 精品一区二区三区影院在线午夜 | 国产福利91 | 午夜影院一区二区 | 国产剧情麻豆女教师在线观看 | 国产成人成网站在线播放青青 | 亚洲国产精品久久青草无码 | 97caoporn| 少妇饥渴偷公乱av在线观看涩爱 | 青草伊人久久综在合线亚洲 | 国产人成无码视频在线 | 五月天福利视频 | 中文av资源 | 99精品国产久热在线观看 | 日韩av无码久久精品免费 | 18禁超污无遮挡无码网址极速 | 国产欧美一区二区精品性色超碰 | 男人天堂久久 | 精品视频一区二区三三区四区 | av无码免费岛国动作片片段欣赏网 | 少妇交换做爰中文字幕 | 欧美成人做爰猛烈床戏 | 18无码粉嫩小泬无套在线观看 | 日本在线视频www色 日韩免费无码视频一区二区三区 | 13一15学生毛片视频软件 | 日韩美女爱爱 | a国产一区二区免费入口 | 亚洲综合成人av一区在线观看 | 精品少妇一区二区30p | 老司机黄色影院 | 正在播放少妇呻吟对白 | 亚洲狠狠爱综合影院网页 | 国产精品视频久久 | 高清乱码一区二区三区 | 欧美色噜噜噜 | 日产亚洲一卡2卡3卡4卡网站 | 久久精品99 | 亚洲成人黄色 | 久久精品国产99久久美女 | 亚洲欲色欲色xxxxx在线观看 | 狠狠欧美 | 国产性自拍|