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GB 31604.3-2016 PDF English

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GB 31604.3-2016: Method for analysis of hygienic standard of polyethylene resin for food packaging
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Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
GB 31604.3-201670 Add to Cart Auto, 9 seconds. Method for analysis of hygienic standard of polyethylene resin for food packaging Valid

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GB 31604.3-2016: Method for analysis of hygienic standard of polyethylene resin for food packaging


---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB31604.3-2016
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA National Food Safety Standard – Food Contact Materials and Products – Determination of Resin Drying Weight Loss Issued on: AUGUST 31, 2016 Implemented on: MARCH 1, 2017 Issued by. National Health and Family Planning Commission of PRC

Table of Contents

Foreword ... 3 1 Scope ... 4 2 Principle ... 4 3 Apparatus ... 4 4 Analytical Procedures ... 4 5 Expression of Analytical Results ... 5 6 Precision ... 5 National Food Safety Standard – Food Contact Materials and Products – Determination of Resin Drying Weight Loss

1 Scope

This Standard specifies the determination of resin drying weight loss in food contact materials and products. This Standard is applicable to determination of polyethylene resin and polystyrene resin drying weight loss in food contact materials and products.

2 Principle

The weight loss on drying polyethylene resin at 90°C~95°C, polystyrene resin at 100°C; namely, the drying weight loss, it indicates the existence of volatile substances in this condition.

3 Apparatus

3.1 Balance. sensibility is 0.1g. 3.2 Electrothermal constant temperature dry box. 3.3 Flat weighting bottle. diameter 40mm.

4 Analytical Procedures

4.1 Sampling method Operate as per GB 5009.156. 4.2 Determination of specimen 4.2.1 Polyethylene resin Weigh 5g~10g (accurate to 0.1mg) of particle specimen, put into the constant-weight ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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