What material is 0.23g Biodegradable BB made of? Has it passed the biodegradability test?

Made of materials
0.23g BB-High Grade Precision BB Bullets is made of biodegradable material PLA (polylactic acid). PLA is a new type of bio-based and biodegradable material, and its production raw materials mainly come from renewable resources, such as corn starch, sugar cane, etc. These raw materials can be converted into PLA resin through fermentation and chemical synthesis, and then processed and molded into plastic products of various shapes, including BB bullets, etc.
PLA material has the following characteristics:
Good biocompatibility: PLA material has good compatibility in the human body and will not cause allergic reactions or rejection reactions, so it is widely used in the medical field.
Strong biodegradability: PLA material can be decomposed by microorganisms in the natural environment and eventually converted into water and carbon dioxide, which will not pollute the environment.
Good processing performance: PLA material has good processing performance and can be made into plastic products of various shapes through molding processes such as injection molding, extrusion, and blow molding.

Biodegradability test
Regarding the biodegradability test, this BB bullet has passed the test of ISO14855-1 standard. ISO14855 is a series of standards formulated by the International Organization for Standardization (ISO) on the biodegradability of plastic materials under specific environmental conditions. ISO14855-1 is part of this series of standards and is used to evaluate the biodegradability of plastic materials under controlled composting conditions.
The test method of ISO14855-1 standard mainly includes the following steps:
Sample preparation: The plastic material to be tested is made into a sample of a certain size and shape, and the initial mass is weighed and recorded.
Composting inoculation: The sample is mixed with the composting inoculum and placed in a composting container to simulate the composting process in a natural environment.
Composting conditions: Control the temperature, humidity, oxygen content and other conditions of the composting container to ensure the normal progress of the composting process.
Regular testing: During the composting process, the quality change of the sample and the amount of carbon dioxide released are regularly tested to evaluate the biodegradability of the material.
Data processing: According to the test results, calculate the biodegradation rate and disintegration degree of the material to determine whether the material meets the biodegradability requirements.
Through the test of ISO14855-1 standard, it can be confirmed that this BB bullet has good biodegradability and can be decomposed by microorganisms in the natural environment without causing long-term pollution to the environment.