磺胺甲基嘧啶_单标_有机类_标准物质_萘析商城

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磺胺甲基嘧啶

BW905015

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127-79-7

250mg

秦境

99.8%

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磺胺甲基嘧啶介绍：

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	Sulfamerazine
Product Code	BW905015
Lot Number	23061538
CAS No.	127-79-7
Mol. Formula	C₁₁H₁₂N₄O₂S
Mol. Weight	264.30
Certified on	2 Jun 2023
Expiry Date	1 Jun 2025
Storage Temp	20°C ± 4°C
Specification	250 mg

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.8%

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.

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本公司销售的所有产品仅供实验科研使用，不用于人体及临床诊断。

国家标准：食品安全国家标准动物性食品中磺胺类药物残留量的测定高效液相色谱法

标准名称及标准号	GB 29694-2013《食品安全国家标准动物性食品中磺胺类药物残留量的测定高效液相色谱法》
适用范围	适用于动物源性食品（如肌肉、肝脏、肾脏等）中磺胺甲基嘧啶等20余种磺胺类药物残留的定量检测。

核心检测方法

高效液相色谱法（HPLC），采用C18色谱柱，紫外检测器波长设定为270 nm，流动相为乙腈-磷酸盐缓冲体系。

检出限与定量限

磺胺甲基嘧啶的检出限为5 μg/kg，定量限为10 μg/kg。

质控样品要求

每批次检测需包含空白样品、加标回收样品和平行样。加标回收率需在70%-120%范围内，相对标准偏差（RSD）≤15%。

关键实验步骤

1. 样品经乙腈提取后，用正己烷脱脂；
2. 提取液经氮吹浓缩后，用流动相复溶；
3. 经0.22 μm滤膜过滤后进样分析。

特别说明

当样品基质复杂时，建议采用固相萃取（SPE）净化。若检测结果接近限量值，需通过质谱法（如LC-MS/MS）进行确证。

以上信息仅供参考，请以相应标准的原文为准！