ASTM G21-09 PDF

  • July 30, 2019

Procedure: ASTM G utilizes a nutrient salts agar that provides all of the trace nutritional elements needed by fungi to support growth. However, to achieve a. Buy ASTM G PRACTICE FOR DETERMINING RESISTANCE OF SYNTHETIC POLYMERIC MATERIALS TO FUNGI from SAI Global. ASTM G Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi. This practice covers determination of the effect of.

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ASTM G21:09

It is generally the other components, such as plasticizers, cellulosics, lubricants, stabilizers, and colorants, that are responsible for fungus attack on plastic materials. Monitoring Standards monitoring is a free service designed for you who wish to be alerted of changes to or new editions of the standards required in your work.

Start Webshop Product catalog Product presentation. If handling is necessary gloves, should be worn while handling test specimens.

Contamination can have a negative effect on the test results since it could easily provide nutrients to the fungus for growth. Need more than one copy? Your Alert Profile lists the documents that will 2g1-09 monitored. The inch-pound units given in parentheses are for information only. Subscription – always available and updated A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition.

You may delete a document from your Alert Profile at any time. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. NTS engineers are extremely careful handling samples for fungus testing, as the cleanliness of the specimens is important prior to testing — especially testing being conducted on a cleaning or decontamination process. Read more about subscriptions.

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Test methods are used to determine the effect of fungi on the properties of synthetic polymeric materials in the form of molded and fabricated articles, tubes, rods, sheets, and film materials.

ASTM G21 – National Technical Systems

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Standards monitoring is a free service designed aatm you who wish to be alerted of changes to or new editions of the standards required in your work.

NOK 1 ,00 excl. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The benefits of a subscription: It can also show, for long test durations, the effects fungus may have on the test specimen, such as changes in appearance, or in mechanical and electrical properties.

Please first verify your email before subscribing to alerts. To varying degrees, live fungi will use wood, paper, leather, hydrocarbons, PVC, polyurethanes, certain plastics and paints, along with other materials, as fuel for growth.

Add to Alert PDF. This ensures that you are always up-to-date and saves you both time and money. The fungus results are usually determined and recorded as a growth rating: Already Subscribed to this document.

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It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition. Please first log in with a verified email before subscribing to alerts. If the g221-09 are mishandled or suspected of contamination prior to testing, they should be cleaned, Testing cannot be conducted on specimens until 72 hours astn passed.

This standard is also available to g1-09 included in Standards Subscriptions. To ensure that estimates of behavior are not too optimistic, the greatest observed degree of deterioration should be reported. Changes in optical, mechanical, and electrical properties may be determined by the applicable ASTM methods.

Many products that operate in warm, humid environments must be tested to withstand fungal attacks, since this problem can cause myriad of operational challenges.

This standard is not included in any asrm. You need to log in before adding standards to the monitoring service. The test can reveal if the specimen being analyzed supplies sufficient nutrition for fungal growth.