欧美色图88,美女免费三级网站,AV不卡专区,女优专区校园春色,亚洲一级二级三级视频,老色鬼无码视频在线观看

標準品/2,2-二甲基丁烷

標準品/2,2-二甲基丁烷
產(chǎn)品編號:72330
CAS號:75-83-2
規(guī)格:100mg
有效期:2026-09-25
品牌:TMstandard
標準值:99.6%

分享到:

資料下載

2,2-二甲基丁烷

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(chǎn)品名稱) 2,2-Dimethylbutane(2,2-二甲基丁烷)
Product Code(產(chǎn)品編號)72330
 
Lot Number(產(chǎn)品批號)-
 
CAS No.75-83-2
 
Mol. Weight(分子量)86.18
 
Mol. Formula(分子式)C6H14
 
Melting Point(熔點)N/A
 
Expiry Date(失效日期)2026-Sep-25
 
Boiling point(沸點)49.7℃(dec.)
 
Appearance(外觀)Liquid
(液體)____________________
 
Storage Temp(存儲條件)(-18±5)℃,Keep in the shade
(-18±5)℃冷凍,置于陰涼處
C E R T I F I E D
Purity
99.6%
 
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(zhì)檢
  • 電話

    4008-099-669

    手機

    18168802993

在線客服
阜城县| 镇坪县| 陇南市| 鄂伦春自治旗| 桂东县| 温州市| 河北省| 吉安市| 渭源县| 临武县| 青浦区| 新宁县| 郯城县| 蒙山县| 澎湖县| 新安县| 富裕县| 建平县| 手机| 和顺县| 滕州市| 塘沽区| 桐乡市| 桂阳县| 丰镇市| 灌阳县| 河间市| 青阳县| 静乐县| 太原市| 晋城| 余姚市| 苗栗市| 涟源市| 宿州市| 耿马| 祁阳县| 泸州市| 湟源县| 都安| 嘉兴市|