GB/T 38787-2020 (English Version) PDF

Scope: This standard describes the preparation of test samples for testing the ultimate aerobic and anaerobic biodegradability in aqueous media, activated sludge, compost, digested sludge and soil. The purpose is to achieve the dimensional consistency of the test samples, thereby improving the repeatability of the test results during the final biodegradability test of the product. These methods are applicable to the following materials: --- natural and/or synthetic polymers, copolymers and their mixtures; --- plastic materials containing additives such as plasticizers, pigments, etc.; --- containing organic or inorganic fillers Plastic composite materials; - products made of the above materials.

GB/T 38787-2020 Referenced Document

GB/T 38787-2020 Plastics—Methods for the preparation of samples for biodegradation testing of plastic materials
ISO 14851 Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium — Method by measuring the oxygen demand in a closed respirometer
ISO 14853 Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system - Method by measurement of biogas production
ISO 14855-2 Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions - Method by analysis of evolved carbon dioxide - Part 2: Gravimetric measurement of carbon dioxide evolved in a laboratory-scale test
ISO 15985 Plastics - Determination of the ultimate anaerobic biodegradation under high-solids anaerobic-digestion conditions - Method by analysis of released biogas
ISO 17556 Plastics — Determination of the ultimate aerobic biodegradability in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved
ISO 3310-1 Test sieves - Technical requirements and testing - Part 1: Test sieves of metal wire cloth
ISO 472 Plastics — Vocabulary — Amendment 1: Additional items

2020 GB/T 38787-2020 Plastics—Methods for the preparation of samples for biodegradation testing of plastic materials