乙醇中4种酯类混标（GB/T 10345-2022）
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总磷标准溶液/以P计
BW02282-1000-1000 | 1000μg/mL
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水中镉单元素溶液标准物质/介质:1%硝酸
GBW(E)084443 | 1000μg/mL
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水中铅单元素溶液标准物质/介质:1%硝酸
GBW(E)084451 | 1000μg/mL
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水中银成分分析标准物质/介质:5%硝酸
GBW(E)083740 | 1000μg/mL
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总氮标准溶液/以N计
BW02003-1000-1000 | 1000μg/mL
乙醇中4种酯类混标
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
3,4,5-Trichlorophenol
Product Code
BW901064
Lot Number
23061508
CAS No.
609-19-8
Mol. Formula
C6H3Cl3O
Mol. Weight
197.45
Certified on
2 Jun 2023
Expiry Date
1 Jun 2025
Storage Temp
20°C ± 4°C
Specification
25 mg
CERTIFIED
Purity
CERTIFIED
Expanded Uncertainty (U)
Approved by
98.6%
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.
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 external7 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.
相关标准解读：GB/T 10345-2022《白酒分析方法》
1. 适用范围
本标准规定了白酒中挥发性酯类物质（包括乙酸乙酯、己酸乙酯、乳酸乙酯、丁酸乙酯等）的检测方法，适用于以粮谷、薯类、水果等为原料酿造的白酒中酯类成分的定量分析。
2. 关联内容
3. 关键性能指标
4. 方法验证要求
5. 注意事项
以上信息仅供参考，请以相应标准的原文为准！