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/庚酸

標準品/庚酸
產品編號:72004-1g
CAS號:111-14-8
規格:1g
有效期:2030-06-27
品牌:TMstandard
標準值:99.9%

分享到:

資料下載

庚酸

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) Heptanoic Acid(庚酸)
Product Code(產品編號)72004-1g
 
Lot Number(產品批號)-
 
CAS No.:111-14-8
 
Mol. Weight(分子量)130.18
 
Mol. Formula(分子式)C7H14O2
 
Melting Point(熔點)N/A
 
Expiry Date(失效日期)2030-Jun-27
 
Boiling point(沸點)223℃(dec.)
 
Appearance(外觀)Liquid
(液體)______________________
 
Storage Temp(存儲條件)Normal temperature,Keep in the shade
常溫,置于陰涼處
 
Transportation(運輸條件)Normal temperature transportation(常溫運輸)
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

Neutralization titration


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: 国产精品一区二区人妻无码| 国产精品女上位好爽在线短片| 亚洲国产夜色在线观看| 日本漫画母亲口工子全彩| 桃花论坛POWERED2019| 2021久久99国产熟女人妻| 精品无码一区二区三区中文字幕| 亚洲专区一区| 国产午夜精品理论片免费观看| 乌克兰17一18处交| 亚洲爱视频| 人成午夜免费视频| 亚洲国产日韩欧美在线a乱码| 麻豆一二三区果冻| 亚洲视频久久| 脱了护士的奶罩吃奶免费观看| 四虎网站最新地址| 久久精品美女久久| 亚洲天堂影院在线观看| 中国同性男男gayxxxx免费的| 亚洲人成影院在线播放| 国产WW久久久久久久久久| 手机看片一区二区| xxxx69日本| 一个人在线观看免费高清视频在线观看| 尤物成人| 白丝女仆被强扒内裤| 乱h好大噗嗤噗嗤烂了| 国产成人免费观看在线视频| 办公室里呻吟的丰满老师电影| 亚洲精品入口一区二区乱麻豆精品| 99热国产这里只有精品免费| 8x华人免费视频| 国产这里有精品| 国产成人在线视频观看| 岛国片在线免费观看| 孕交videos欧美小孕| 国产曰批试看免费视频播放免费| 艳妇乳肉豪妇荡乳a∨| 爽爽影院在线免费观看| 欲梦ai换脸www在线观看视频|