GB/T 24127-2009 English PDF

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GB/T 24127-2009: Testing method for determining algal resistance of plastics
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24127-2009	139	Add to Cart	3 days	Testing method for determining algal resistance of plastics	Valid

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Basic data

Standard ID: GB/T 24127-2009 (GB/T24127-2009)
Description (Translated English): Testing method for determining algal resistance of plastics
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080
Word Count Estimation: 6,635
Date of Issue: 2009-06-15
Date of Implementation: 2010-02-01
Adopted Standard: ASTM G29-1996 (2002), NEQ
Regulation (derived from): National Standard Approval Announcement 2009 No.8 (Total No.148)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the plastic anti-algae performance test methods. For plastic anti-algae performance evaluation. This standard does not address issues related to security, safety and health practices developed by the use of personnel prior to use standards. And determine the scope and limitations apply.

GB/T 24127-2009: Testing method for determining algal resistance of plastics

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Testing method for determining algal resistance of plastics ICS 83.080 G31 National Standards of People's Republic of China Plastic anti-algae performance test methods Posted 2009-06-15 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard ASTMG29.1996 (2002) "plastic film anti-algae properties Standard Test Method for" consistent (in English) non-equivalent. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee plastic aging methods Technical Committee (SAC/TC15/SC5) centralized. This standard is drafted by. Institute of Microbiology, Guangdong Province, Zhuhai City, far Kang Enterprise Co., Ltd., Beijing Institute of additives addition, Guangzhou Institute of Materials Co., Ltd., Beijing noble Nano Technology Co., Ltd. Participated in the drafting of this standard. blond Technology Co., Ltd. The main drafters of this standard. Xie Bao, Ouyang sheng, Wang Haojiang, Xiezhen Ping, Li Jie, Chen Yi this, Yang Yunong, Bi Li Zhong. This standard is the first release. Plastic anti-algae performance test methods

1 Scope

This standard specifies the plastic anti-algae performance test methods for evaluating the performance of plastic anti-algae. This standard does not address issues related to security, the development of standards prior to use by the use of personnel safety and health practices and determine the applicable limits and System range.

2 Principle and summary

This test method is to simulate natural environmental conditions, algae growth, algae growth by physiological characteristics of the design of artificial simulation test for Plastics - Determination of inhibition of algae and killing effect, to evaluate the performance of plastic anti-algae and algae growth is determined by the degree of visual inspection method. This standard is a plastic test specimen suspended in a glass beaker at room temperature and exposed to fluorescent light, direct contact with the medium Filamentous blue-green algae of the Oscillatoria (Oscilatoria), every 2d ~ 3d inoculated fresh algae species to sample test bottles. With plastic untreated Material as a control sample or test 21d after the end of the intensive growth of algae in the control sample.

3 Significance and Use

Agriculture, a lot of plastic is used to make film, film seedlings, big films and irrigation pipes, fishing nets, buoys and other farming; industrial areas More widely, such as water and outdoor architectural pipe, submersible pumps, ship building materials. Since the humid climate and light conditions, algae Class of growth and reproduction in large numbers on the surface of plastic or plastic products, algae and its metabolites (such as acids, enzymes and other chemicals) affect not only the plastic The appearance of the material itself, but also affect the performance of plastic or plastic products. In the swimming pool, artificial ponds, irrigation canals and other facilities usually lined with a plastic film. When weather conditions are suitable, easy raw algae Long, they produce thick and unsightly film on the plastic. This method was used to evaluate the anti-algae grade plastic.

4 Equipment

4.1 Light incubator Temperature can be maintained at 25 ℃ ± 2 ℃, fluorescent light intensity 2000lx ~ 10000lx. 4.2 two biological safety cabinets or clean benches 4.3 Electronic Balance Precision 0.01g. 4.4 Analytical Balance Precision 0.0001g. 4.5 high-pressure steam sterilizer Pressure can be maintained at 0.10MPa ~ 0.11MPa. 4.6 homogenizer Speed \u200b\u200bis not less than 10000r/min. 4.7 Beaker Capacity 1000mL. 4.8 Petri dishes Diameter 9cm. Precision 0.1. ......

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