What Is the Mixed Standard of 20 PCBs (GB 5009.190-2014 Table A.1)?

The mixed standard of 20 PCBs (SKU M1539180) is a ready-to-use reference solution prepared in n-hexane containing the 20 polychlorinated biphenyl (PCB) congeners listed in Table A.1 of the Chinese national standard GB 5009.190-2014, Determination of Polychlorinated Biphenyls in Foods. Polychlorinated biphenyls are persistent organic pollutants regulated in food due to their toxicity and bioaccumulation potential. This mixed standard is intended for use in instrument calibration, method validation, and routine quality control in food safety laboratories performing PCB residue analysis.

The product is supplied by Putong Bio (谱同生物) under stock code PT71001MK-2.5N and is distributed by Aladdin Scientific as M1539180.

Which PCB Congeners Are Included?

The 20 PCB congeners included in this mixed standard are those explicitly enumerated in Table A.1 of GB 5009.190-2014. The specific IUPAC numbers and congener identities are defined within the standard itself. Users should consult GB 5009.190-2014 Table A.1 directly to confirm the exact list of congeners, their IUPAC PCB numbers, and their target concentrations, as these details are normative requirements of the standard.

Common regulatory PCB congeners monitored in food safety programs typically include indicator PCBs such as PCB-28, PCB-52, PCB-101, PCB-118, PCB-138, PCB-153, and PCB-180 among others; however, the precise 20-congener list for this product is governed by the GB 5009.190-2014 Table A.1 specification. Please refer to the standard or the product Certificate of Analysis (CoA) for the definitive congener list.

How Should This Standard Be Stored and Handled?

As an n-hexane solution of halogenated organic compounds, this mixed PCB standard requires careful handling and appropriate storage conditions:

• Storage temperature: Store at -20 °C or as specified on the product label and CoA to maintain stability and prevent solvent evaporation.
• Light protection: PCB solutions should be protected from light to minimize photodegradation. Store in amber vials or in the dark.
• Ventilation: n-Hexane is a flammable solvent with significant vapour pressure. Handle only in a well-ventilated fume hood away from ignition sources.
• Personal protective equipment: Wear appropriate PPE including chemical-resistant gloves, lab coat, and eye protection when handling.
• Waste disposal: Dispose of PCB-containing waste in accordance with local and national regulations for hazardous halogenated organic waste.

Always refer to the Safety Data Sheet (SDS) provided with the product before use.

Regulatory Context: GB 5009.190-2014

GB 5009.190-2014 is the Chinese national food safety standard that specifies analytical methods for the determination of polychlorinated biphenyls in food. It is issued by the National Health and Family Planning Commission of China (now National Health Commission) and is part of the GB 5009 series of food safety testing standards.

The standard prescribes sample preparation, extraction, cleanup, and instrumental analysis procedures (typically gas chromatography with electron capture detection, GC-ECD, or GC-MS) for quantifying PCB residues. The use of a certified mixed standard corresponding to Table A.1 is essential for establishing calibration curves and ensuring traceability of results to the requirements of the standard.

Laboratories seeking accreditation or regulatory compliance for PCB testing in food in China must use standards and reagents that are compliant with GB 5009.190-2014 specifications.

Ordering and Availability

The mixed standard of 20 PCBs (GB 5009.190-2014 Table A.1) is available from Aladdin Scientific under SKU M1539180. The product is supplied by Putong Bio (谱同生物) with supplier stock code PT71001MK-2.5N.

To place an order or request a quotation, contact your Aladdin Scientific account representative or visit the product page on the Aladdin Scientific website. For bulk orders, custom concentration requirements, or questions about lead time and stock availability, please contact Aladdin customer service directly.

A Certificate of Analysis (CoA) and Safety Data Sheet (SDS) are available upon request and should be reviewed prior to use to confirm concentration values, congener identities, expiry date, and safe handling requirements.