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/1,1'-聯(lián)萘

標準品/1,1'-聯(lián)萘
產(chǎn)品編號:72400
CAS號:604-53-5
規(guī)格:10mg
有效期:2025-11-11
品牌:TMstandard
標準值:99.8%

分享到:

資料下載

1,1'-聯(lián)萘

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 1,1'-Binaphthyl
Product Code72400
 
Lot Number-
 
CAS No.604-53-5
 
Mol. Weight254.33
 
Mol. FormulaC20H14
 
Melting Point154℃(dec.)
 
Expiry Date2025-Nov-11
 
Boiling pointN/A
 
AppearanceWhite to Off-White Solid__
 
Storage Temp(20±5)℃,Keep in the shade
C E R T I F I E D
Purity
99.8%
 
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
大埔县| 车致| 宜都市| 平遥县| 会同县| 高安市| 大方县| 宜城市| 长葛市| 镇平县| 石渠县| 册亨县| 屯留县| 隆子县| 汨罗市| 酒泉市| 普宁市| 伊宁县| 屯门区| 高淳县| 肇源县| 德州市| 渝中区| 江华| 阳原县| 囊谦县| 定结县| 大同市| 南平市| 武威市| 高尔夫| 邵东县| 杂多县| 翁牛特旗| 长泰县| 延边| 旺苍县| 连州市| 夹江县| 德昌县| 顺昌县|