Aggelies

ASTM E Antimicrobial Standard Test Method for Determining the Antimicrobial Activity of Immobilized Antimicrobial Agents Under Dynamic Contact. ASTM E Standard Test Method for Determining the Antimicrobial Activity of Immobilized Antimicrobial Agents Under Dynamic Contact Conditions. ASTM E Standard Test Method for Determining the Antimicrobial Activity of Immobilized Antimicrobial Agents under Dynamic Contact Conditions. The test.

Author: Zulkitilar Tasar
Country: Portugal
Language: English (Spanish)
Genre: Love
Published (Last): 8 July 2014
Pages: 251
PDF File Size: 20.41 Mb
ePub File Size: 5.44 Mb
ISBN: 703-3-90144-784-8
Downloads: 8107
Price: Free* [*Free Regsitration Required]
Uploader: Dasar

Log in Log out Edit. No other units of measurement are included in this standard.

Organisms typically used in this method: This method is generally used to substantiate antimicrobial properties of treated specimens for non-public health related claims. The test quantitatively evaluates the effectiveness of a sample treated with a non-leaching antimicrobial agent by shaking in an organism suspension.

This standard does not purport to address all of the safety concerns, if any, associated with its use. This website stores cookies on your computer. For example, water soluble antimicrobials will be prone to removal from the test surface using the method described in Section 13 but insoluble compounds will not. Atm test method standardizes both the growth conditions of the challenge species and substrate contact times to reduce the variability associated with growth phase of the microorganism.

A single cookie will be used in your browser to remember your preference not to be tracked. In this method, treated test samples are placed in a laboratory flask containing a dilute suspension of test organism, commonly Escherichia coli.

This dynamic shake flask test was developed for routine quality control and screening tests in order to overcome difficulties in using classical antimicrobial test methods to evaluate substrate-bound antimicrobials. We use this information to improve and customize your browsing experience and for analytics and asm about our visitors — both on this website and other media.

ASTM E – Method Determining the Antimicrobial Activity

Link to Active This link will always route to the current Active version of the standard. Materials evaluated by this method may be comprised of fabric, paper, powder or other solid materials.

Following exposure, a sample of the test organism suspension is removed quantitatively assayed for survivors. 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.

  HP OMNIBOOK XE4500 MANUAL PDF

Maria Curry ext Wrist Action Shaker. To determine if a compound is immobilized in all conditions or during the end use of the product additional testing may be required. Facebook Linkedin Instagram Twitter Google. This test ensures good contact between bacteria and the treated fibre by constant agitation of the test specimen in a bacterial suspension during the test period 1hour. Surface antimicrobial activity is determined by comparing results from the test sample to controls run simultaneously.

Summary of Test In this method, treated test samples are placed in a laboratory flask containing a dilute suspension of test organism, commonly Escherichia coli. One-hour contact time in a buffer solution allows for metabolic stasis in the population.

Qstm Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Test Package Request Form. The number of viable organisms e2419 the suspension is determined and the percent reduction is calculated by comparing retrievals from appropriate controls. This test method is designed to evaluate the antimicrobial activity of non-leaching, antimicrobial-treated specimens under dynamic contact conditions.

The ASTM E Standard Test Method is used to evaluate the antimicrobial activity of substrate-bound, non-leaching, antimicrobial-treated samples under dynamic contact conditions.

Microbial concentrations in the treated and untreated samples are usually determined at 0, 1 or 24 hours contact time. These difficulties include ensuring contact of inoculum to treated surface as in AATCCflexibility of retrieval at different contact times, use of inappropriately applied static conditions as in AATCCsensitivity, and reproducibility.

The test qstm the antimicrobial activity of a treated specimen by shaking samples of surface-bound materials in a concentrated bacterial suspension for a one hour contact time. Record and report presence of solution activity.

Note 1 — Stresses may include laundry, wear and abrasion, radiation and steam sterilization, UV exposure, solvent manipulation, temperature susceptibility, or similar physical or chemical manipulation.

Link to Active This link will always route to the current Active version of the standard. The resulting plates are incubated, the number of survivors asrm enumerated and a percent reduction is determined for the test flask as compared to the untreated control suspension.

  CAREZZA SKI MAP PDF

This dynamic shake flask test was developed for routine quality control and screening tests in order to overcome difficulties in using classical antimicrobial test methods to evaluate substrate-bound antimicrobials. This test method is only intended to determine efficacy as described in 4.

The presence of a leaching antimicrobial is determined post-test. Work Item s – proposed revisions of this standard. It is for this reason that the use of the term leaching throughout this document is limited to only e21149 testing conditions described herein.

Immobilized antimicrobial agents, such as surface bonded materials, are not free to diffuse into their environment under normal conditions of use.

ASTM E – Microbe Investigations (MIS)

The susceptibility of the species to particular biocides could be altered depending on its life stage cycle. These difficulties include ensuring contact of inoculum to treated surface as in AATCCflexibility of retrieval at different contact times, use of inappropriately applied static conditions as in AATCCsensitivity, astk reproducibility.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This standard does not purport to address all of the safety concerns, if any, associated with its use. It has been developed for routine quality control and screening tests and is used to evaluate substrate bound antimicrobials.

No regulated reduction limits currently exist for general antimicrobial claims made qstm this method. Accept Decline Privacy policy. The antimicrobial activity of a substrate-bound, non-leaching antimicrobial agent is dependent upon direct contact of asfm with the active chemical agent. The flask is placed onto a wrist-action shaker and shaken for a desired exposure time, typically 1 hour.

Accuratus Lab Services

This test method ensures good contact between the bacteria and the treated fiber, fabric, or other substrate, by constant agitation of the test specimen in a challenge suspension during the test period. To find out more about the cookies we use, see our Privacy Policy.

This dynamic shake flash test was developed for routine quality control and screening test. Work Item s – proposed revisions of this standard.