Treated Articles

The IBRG Treated Articles Group was formed in Autumn 2018 through the merging of the former Plastics and Textiles Group during a general reorganisation within IBRG. This was a logical outcome as the general basis of much of the work at that time was similar in the two groups and allows for more efficient use of new approaches.

For the past few years, the focus of activity of the previous IBRG Plastics and Textiles Groups relevant to treated articles with added functionality has been on the development of methods to examine the performance of non-porous and porous treated articles / materials that are intended to demonstrate external, hygiene-related effects. Following collaborative work with SIAA, to help validate the conversion of JIS Z 2801 into ISO 22196, activities have progressed towards producing methods that explore the functionality of such materials under simulated realistic conditions. The aim is to provide frameworks that can be employed to support claims made for such materials. A number of exposure scenarios have been defined and work is in progress to produce methodologies that can simulate them. The first is currently undergoing international rings tests and the data and approach has been used to both support activities within the OECD as well as producing IBRG guidance documents.

The former IBRG Textiles group was formed with the intention of developing testing approaches that could be used in the validation of claims for antimicrobial and hygienic effects from textiles and other porous material that have been treated with biocides. As part of this process, the group has completed work to provide validation data for a harmonised Tier 1 efficacy test for the OECD and this is also available as an IBRG test method.

The main activity within the Treated Articles Group curretly now focussed on the production of a number of in-use simulation tests. The first such protocols that simulates the effect of a treatment on the survival of bacteria delivered as either fine droplets or splashes are undergoing international ring testing. The group is also exploring possible in-vitro tests for treatments intended to prevent / reduce the formation of odour in textiles.

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    • £100.00
      Tier 1 Textile Method - Antibacterial Properties
      This document describes a method to determine the basic antibacterial properties of textiles and porous materials and articles treated with a biocide with the intension of introducing disinfectant / hygienic properties. Samples are inoculated with defined suspensions of microorganisms and then incubated. The changes in the size of the populations both over time and on treated compared with untreated materials are used to describe the basic antimicrobial properties of the materials. The results obtained may not describe the performance of the treated materials under normal conditions of use. Changes in v1.03 Typographical corrections.
      IBRG TEX13-005
    • ISO 22196:2011 - Measurement of antibacterial activity on plastics and other non-porous surfaces
    • Chopra, I. 2007 The increasing use of silver-based products as antimicrobial agents: a useful development or a cause for concern? Antimicrob. Chemother. 59 (4): 587-590
    • Peter Askew 2014 Efficacy Assessment of Treated Articles - A guidance Nordic Council
    • Askew P 2018 Guidance Document on Use and Development of Tier-2 Laboratory Based Tests Used to Substantiate Claims for Efficacy of Biocide Treated Articles 287/13
    • Askew P 2008 Guidance Document on the Evaluation of the Efficacy of Antimicrobial Treated Articles with Claims for External Effects OECD
    • James Redfern, Jake Tucker, Lisa M. Simmons, Peter Askew, Ina Stephan and Joanna Verran 2018 Environmental and Experimental Factors Affecting Efficacy Testing of Nonporous Plastic Antimicrobial Surfaces Methods and Protocols 1 (4) 36 MDPI
    • Dunne CP, Keinänen-Toivola MM, Kahru A, Teunissen B, Olmez H, Gouveia I, Melo L, Murzyn K, Modic M, Ahonen M, Askew P, Papadopoulos T, Adlhart C, Crijns FRL. 2017 Anti-microbial coating innovations to prevent infectious diseases (AMiCI): Cost action ca15114. Bioengineered 2 (8-6) 679-685
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