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/二硫赤蘚醇

  • 型   號:714246-100mg
  • 類   別:純品標準品
  • 價   格:810

標準品/二硫赤蘚醇
產品編號:714246-100mg
CAS號:6892-68-8
規格:100mg
有效期:2025-11-26
品牌:TMstandard
標準值:99.9%

分享到:

資料下載

二硫赤蘚醇

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) Dithioerythritol(二硫赤蘚醇)
Product Code(產品編號)714246-100mg
 
Lot Number(產品批號)-
 
CAS No.6892-68-8
 
Mol. Weight(分子量)154.25
 
Mol. Formula(分子式)C4H10O2S2
 
Melting Point(熔點)N/A
 
Expiry Date(失效日期)2025-Nov-26
 
Boiling point(沸點)N/A
 
Appearance(外觀)Solid
(固體)_________________
 
Storage Temp(存儲條件)(2-8)℃,Keep in the shade
(2~8)℃冷藏,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/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

    18168802993

在線客服
主站蜘蛛池模板: 欧美一级做a爰片免费 | 在线观看欧美国产 | 男人的天堂色偷偷 | 日本一区二区三区在线观看 | 国产成人片 | 91亚洲国产成人久久精品网址 | 麻豆高清完整版观看在线 | 欧美成人香蕉在线观看 | 善良朋友的妻子在线观看 | h漫免费 | 亚洲成人黄色在线 | 日日草天天干 | 久久国产热这里只有精品8 久久国产热这里只有精品 久久国产热视频 | 性刺激免费视频观看在线观看 | 看片亚洲 | 欧美在线视频不卡 | 国产精品亚洲欧美大片在线看 | 四虎影在线永久免费观看 | 免费黄色成年网站 | 综合色在线| 全部老头和同性老头xxxxx | 久草视频首页 | 91视频最新网站 | 日日操网站 | 日韩毛片在线看 | 欧美黑人粗硬大在线看 | 福利午夜最新 | 国产欧美精品专区一区二区 | 美国黑人一级毛片免费看的 | 少妇太爽了在线观看 | 欧美在线高清 | 性欧美高清极品xx | 四虎永久免费地址ww 41.6 | 99精品免费视频 | 中文字幕久荜一区日本精品 | 两个人在线观看视频www | 欧美性video精品 | 九九99香蕉在线视频免费 | 久久99热精品免费观看k影院 | 亚洲第一se情网站 | 久久福利影院 |