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正丁醇_
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正丁醇

BW901112 {{goodObj.price > 0 ? '￥' + goodObj.price : '咨詢'}} ￥{{goodObj.sell_price || 0}} 咨詢 500mg {{goodObj.date}} 秦境 {{item.norm}} 99.7% {{inventory}}
正丁醇介紹：

REFERENCE MATERIAL CERTIFICATE

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 17025, ISO 17034 and a registered quality management system ISO9001.

Product Name

1-Butanol

Product Code

BW901112

Lot Number

23091523

CAS No.

71-36-3

Mol. Formula

C4H10O

Mol. Weight

74.12

Certified on

13 Sep 2023

Expiry Date

12 Sep 2028

Storage Temp

20°C ± 4°C

Specification

500mg

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.7%

1.0%

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.

The producer certifies that this reference material meets the specification stated in this certificate until the expiry date, provided it is stored unopened at the recommended temperature herein. Product warranties for this reference material are set out in the terms and conditions of purchase.

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.

Safety

Proper precautions should be observed while handling. See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements are calibrated with weights traceable to the national standards (DKD). The calibration of the balances is verified daily internally and annually by an external accredited calibration service. Chromatographic methods are traceable to the International System of Units (SI).

Homogeneity

Random replicate samples of the final packaged RM have been analysed to prove homogeneity compliant with ISO 17034.

Storage

The RM should be stored in the original sealed container at the indicated temperature.

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. If storage after opening is necessary, the RM should be tightly closed and kept from light and moisture. If the RM was in a sealed ampoule, it should be transferred to a vial with minimum head space.


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手機(jī)版：正丁醇

本公司銷售的所有產(chǎn)品僅供實(shí)驗(yàn)科研使用，不用于人體及臨床診斷。
1. 標(biāo)準(zhǔn)名稱及標(biāo)準(zhǔn)號(hào)
GB/T 23990-2008
2. 適用范圍
本標(biāo)準(zhǔn)適用于涂料、油墨及相關(guān)產(chǎn)品中正丁醇含量的測(cè)定，適用于溶劑型涂料及含有機(jī)溶劑的產(chǎn)品質(zhì)量控制。
3. 核心檢測(cè)方法
氣相色譜法（GC-FID）：通過色譜柱分離樣品中正丁醇與其他組分，氫火焰離子化檢測(cè)器（FID）定量分析。
4. 檢出限與定量限
檢出限（LOD）為0.5 mg/kg，定量限（LOQ）為2.0 mg/kg，適用于低濃度正丁醇的痕量檢測(cè)。
5. 質(zhì)控樣品要求
每批次樣品需包含空白對(duì)照、平行樣及加標(biāo)回收樣，回收率范圍應(yīng)控制在85%-115%，相對(duì)標(biāo)準(zhǔn)偏差（RSD）≤5%。
6. 關(guān)鍵實(shí)驗(yàn)步驟
① 樣品預(yù)處理：稱取1.0 g樣品，用丙酮萃取并過濾；
② 色譜條件：DB-WAX色譜柱，柱溫120℃→220℃（10℃/min），進(jìn)樣量1 μL；
③ 校準(zhǔn)曲線：配制0.5-50 mg/L正丁醇標(biāo)準(zhǔn)系列。
7. 特別說明
① 避免使用含醇類溶劑的實(shí)驗(yàn)耗材；
② 若樣品含高沸點(diǎn)干擾物，需采用程序升溫至280℃進(jìn)行徹底洗脫；
③ 實(shí)驗(yàn)環(huán)境溫度需控制在25±2℃。

以上信息僅供參考，請(qǐng)以相應(yīng)標(biāo)準(zhǔn)的原文為準(zhǔn)！
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