久久5-久久4-久久3-久久2019-一个人hd高清在线观看免费一-一个人hd高清在线观看免费

標準品/2-己酮

  • 型   號:72028
  • 類   別:標準品
  • 價   格:110

標準品/2-己酮
產品編號:72028
CAS號:591-78-6
有效期:2030-04-23
品牌:TMstandard
標準值:99.9%

分享到:

資料下載

2-己酮

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-Hexanone(2-己酮)
Product Code(產品編號)72028
 
Lot Number(產品批號)-
 
CAS No.591-78-6
 
Mol. Weight(分子量)100.16
 
Mol. Formula(分子式)C6H12O
 
Melting Point(熔點)N/A
 
Expiry Date(失效日期)2030-Apr-23
 
Boiling point(沸點)N/A
 
Appearance(外觀)Colorless Clear Liquid
(無色透明液體)____
 
Storage Temp(存儲條件)(20±5)℃,Keep in the shade
常溫(20±5)℃,置于陰涼處
C E R T I F I E D
Purity
99.9%
 
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


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

    18168802993

在線客服
主站蜘蛛池模板: 好男人官网在线观看 | 中文在线免费不卡视频 | 果冻天美a∨传媒 | 韩剧网最新的韩国电视剧免费观看 | 偷偷碰偷偷鲁免费视频 | 99久久精品费精品国产一区二 | 日韩高清在线日韩大片观看网址 | 精品一区二区三区视频在线观看 | 欧美精品v日韩精品v国产精品 | 九九九九在线精品免费视频 | 免费网站黄成人影院 | 二级片在线观看 | 精品视频日本 | 99精品国产福利免费一区二区 | 欧美地区一二三区 | 欧美日韩一二三区 | 欧美在线看片a免费观看 | 亚洲视频精品 | 国产青青在线视频 | 国产成人久久精品激情 | 青青青久草 | 99re这里有精品 | 国产福利一区在线 | 日韩精品视频福利资源站 | 国产农村一一级特黄毛片 | 久草视频在 | 久久最新免费视频 | 久草视频首页 | 东方四虎| 色丁香色婷婷 | 国产麻豆免费 | 日韩一级欧美一级 | 日韩国产午夜一区二区三区 | 亚洲a视频| 久久久久久久国产 | 日韩欧美二区 | 在线看的成人性视频 | 亚洲国产成人久久精品app | 激情 婷婷 | 免费一级特黄3大片视频 | 国产小视频在线看 |