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-乙基吡嗪

標準品/2-乙基吡嗪
產品編號:730819-10mg
CAS號:13925-00-3
規格:10mg
有效期:2027-05-22
品牌:TMstandard
標準值:99.9%

分享到:

資料下載

2-乙基吡嗪

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-Ethylpyrazine(2-乙基吡嗪)
Product Code(產品編號)730819-10mg
 
Lot Number(產品批號)-
 
CAS  .13925-00-3
 
Mol. Weight(分子量)108.14
 
Mol. Formula(分子式)C6H8N2
 
Melting Point(熔點)N/A
 
Expiry Date(失效日期)2027-May-22
 
Boiling point(沸點)N/A
 
Appearance(外觀)Colorless Clear Liquid
(無色液體)____
 
Storage Temp(存儲條件)(2~8)℃,Keep in the shade
冷藏(2~8)℃,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


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.

以上信息僅供參考,請以實物批次為準!


壇墨質檢
  • 電話

    4008-099-669

    手機

    18168802993

在線客服
主站蜘蛛池模板: 国产精品伊人| 亚洲国产精品yw在线观看| 一级毛片视频免费| 视频一区二区国产| 香蕉依人| 亚洲一区二区日韩欧美gif| 国产剧果冻传媒星空在线观看| 视频一区国产| 亚洲性网站| 婷婷国产| 亚洲天堂网站在线| 国内高清在线观看视频| 亚洲三级视频在线观看| 亚洲国产视频网站| 亚洲午夜久久久久久91| 在线免费中文字幕| 免费高清毛片| 亚洲免费中文| 手机在线日韩高清理论片| 亚洲国产网址| 国产婷婷午夜精品无码A片| 亚洲午夜久久久久中文字幕| 日本小网站| 中文国产| 伊人逼逼| 免费观看久久| 青青在线| 天天干天天操天天爱| 亚洲日韩色图| 成人性生交大片免费看中文| 欧美91精品久久久久网免费| 一本到在线视频| 四虎影院海外永久| 亚洲午夜一区| 狂操空姐电影| 日韩精品久久久久影院| 日本欧美特黄特色大片| 亚洲经典自拍| 在线色综合| 啪啪激情婷婷久久婷婷色五月| 日本看片网址|