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SN/T 2814-2011: contact materials for export. Polymers. Determination of the-extracts closures with sealing gaskets for food containers
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SN/T 2814-2011: contact materials for export. Polymers. Determination of the-extracts closures with sealing gaskets for food containers

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contact materials for export.Polymers.Determination of the-extracts closures with sealing gaskets for food containers People's Republic of China Entry-Exit Inspection and Quarantine Standards Export of food contact materials - Polymer Determination of food containers sealed with gaskets extract Issued on. 2011-02-25 2011-07-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard reference American CFR177.1210 making. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Guangdong Entry-Exit Inspection and Quarantine, Shenzhen People's Republic of China Bureau, People's Republic of China Zhuhai Entry-Exit Inspection and Quarantine Hubei People's Republic of China. The main drafters of this standard. Chengu Feng, Yang Bei, Liu Sheng, Bo Ping, Fang Yongkang, Linhong Xiong, Chen Wenhao, Di Cuiping, Zheng Jianguo. Export of food contact materials - Polymer Determination of food containers sealed with gaskets extract

1 Scope

This standard specifies the method for determination of food containers sealing washer extract. This standard applies to the determination of food containers sealed with gaskets extract.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis

3 PRINCIPLE OF THE METHOD

According to food type, select a variety of soaking solution to simulate the closed food container sealing gasket and conditions intended to contain food contact, for seals Ring samples were soaked. After evaporation of the remaining soaking liquid residue of the sample is different in the soaking solution extract. Added to the residue three Chloride solution 50mL, heated to dissolve, filtered, and evaporated to constant weight to give the residue as compared to the quality of the water capacity of the sample container is three Chloride soluble extract, in milligrams per kilogram (mg/kg) Fig.

4 Reagents

This standard reagents and water in the absence of other specified requirements, refer to an analytical reagent water and GB/T 6682 stipulated. 4.1 chloroform. 4.2 soaking solution. 4.2.1 of distilled or deionized water. 4.2.2 heptane. 4.2.3 volume fraction of 8% ethanol. preparation of anhydrous ethanol and distilled water. 5. Apparatus 5.1 rotary evaporator. 5.2 thermostat. to control the temperature accuracy of 0.1 ℃. 5.3 constant temperature water bath. 5.4 Analysis of balance. a sense of the amount of 0.1mg. 5.5 glass evaporating dish.200mL, vials concentrator. 100mL. 5.6 volumetric flask. 1000mL. 5.7 tweezers. ...