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/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

    15806127965

在線客服
主站蜘蛛池模板: 国产粉嫩尤物极品99综合精品 | 亚洲成av人片无码bt种子下载 | 国产免费视频精品视频 | 亚洲va欧美 | 91国内精品自线在拍白富美 | 无码人妻丰满熟妇区五十路在线 | 国产精品成人va在线观看 | 精品一区二区免费视频 | 欧洲无码精品a码无人区 | 青青草视频网站 | 野外做受又硬又粗又大视频 | 午夜激情一区二区 | 2020无码天天喷水天天爽 | 国产精品va在线播放 | 国内外成人免费视频 | 亚洲视频免费观看 | 日本日皮视频 | 日韩丰满少妇无吗视频激情内射 | 在线免费日韩av | 国产欧美一区二区精品忘忧草 | 亚洲国产无套无码av电影 | 成年女人18级毛片毛片免费 | 亚洲老妇色熟女老太 | 精品国产123 | 欧美日本黄色 | 免费国产白丝喷水娇喘视频 | 国产第一页在线播放 | 99国产免费 | 一二三四在线视频社区3 | 51国偷自产一区二区三区的 | 国产白嫩美女在线观看 | 黑人ⅴvideo粗暴亚洲娇小 | 欧美一区二区在线视频观看 | 奇米影视777在线观看 | 51国偷自产一区二区三区的来源 | 在线亚洲精品国产二区图片欧美 | 免费的一级片 | 中文字幕日韩欧美一区二区三区 | 少妇丰满大乳被男人揉捏视频 | 天天干天天草天天 | 日韩精品影片 | 日本成人午夜视频 | 97无码免费人妻超级碰碰夜夜 | 亚洲国产区男人本色 | 99精品国产综合久久久久五月天 | 欧美黄色片网站 | 国产欧美日韩二区 | 97超碰资源总站 | 国产一区二区日韩 | 91嫩草视频在线观看 | 欧美成人形色生活片 | 亚洲一区爱区精品无码 | 国产精品全国免费观看高清 | 99久久精品国产第一页 | 久久久久久久久久久久久大色天下 | 国产毛1卡2卡3卡4卡免费观看 | 色窝窝无码一区二区三区色欲 | 乱淫av| 天天做日日干 | 久久五 | 色妞欧美| 免费看男人j放进女人p的视频 | 强奷漂亮饱满雪白少妇av | 三级三级三级三级 | 国产精品五区 | 国产精品久久久久9999 | 自拍偷拍视频在线观看 | 日噜| 久久久久亚洲精品无码网址色欲 | 少妇爱做高清免费视频 | 无码人妻av免费一区二区三区 | 国产精品国产三级国产专区53 | 精品久久久无码人妻中文字幕 | 久久久91精品国产一区二区精品 | 国产成人久久av免费看 | 亚洲专区视频 | 欧美性大战久久久久xxx | 久久人人97超碰精品 | 精品多人p群无码 | 久久精品久久久久久噜噜 | 国产熟妇久久777777 | 免费看黄色一级视频 | 欧美日韩一区二区三区不卡 | 未成满十八禁止免费网站1 麻豆av在线看 | 2019精品国自产拍在线不卡 | 黄色a一级 | 韩国午夜av| 日本美女色片 | 无码成人h免费视频在线观看 | 老司机精品在线 | 香蕉噜噜噜噜私人影院 | 美女一级黄色片 | 亚洲成人一区二区三区 | 国产日韩欧美一区 | 亚洲视频无码高清在线 | 西西人体大胆444www | 日本丰满少妇裸体自慰 | 精品无人区卡一卡二卡三乱码 | 亚洲中文欧美在线视频 |