ASTM E1482-23 PDF

Overview

ASTM E1482-23 is the internationally recognized standard practice for the use of gel filtration columns for cytotoxicity reduction and neutralization in virology testing. Developed by ASTM International, this standard outlines procedures to decrease the cytotoxic properties of test product mixtures, enabling more accurate assay of viral infectivity. By removing or reducing residual disinfectants or neutralizing agents that could harm host cells, researchers can evaluate virucidal efficacy without interference from cytotoxicity. This standard is essential for laboratories evaluating disinfectant efficacy and is commonly referenced in the context of surface disinfectant, hand hygiene product, and antiviral testing on environmental surfaces.

Key Topics

• Purpose and Scope

  • Reduces cytotoxicity in virus-test product mixtures prior to viral infectivity assays
  • Applicable for disinfectant solutions, wipes, sprays, pre-saturated towelettes, handwashes, and handrubs
  • Enables testing across a wide range of viruses and host systems

• Gel Filtration Technology

  • Utilizes gel filtration columns, such as those packed with Sephadex or similar media
  • Effectively separates viruses from cytotoxic agents via size exclusion chromatography
  • Efficiency depends on the volume of gel bed, sample size, and consistent column preparation
  • Compatible with organic soils, hard water, products containing organic solvents, and various chemical neutralizers

• Operational Considerations

  • Method should be carried out by individuals trained in virology techniques
  • High-viscosity products may require alternative neutralization methods, as some cannot pass through gel columns
  • The gel filtration method reduces but does not necessarily eliminate cytotoxicity, so further processing or controls may be needed

• Quality and Safety

  • Ensures reduction of cytotoxic activity while striving to maintain viral titer for accurate efficacy measurement
  • Requires adherence to health, safety, and regulatory guidelines as part of laboratory best practices

Applications

ASTM E1482-23 is a critical standard for practitioners in microbiology, virology, and clinical laboratory settings, particularly those involved in:

• Efficacy Testing of Disinfectants

  • Evaluating the virucidal activity of liquid and aerosolized disinfectants, wipes, and sprays on nonporous environmental surfaces

• Personal Hygiene Product Evaluation

  • Testing of handwash or handrub products for their effect on virus inactivation efficacy

• Neutralization in Virucidal Testing

  • Essential for studies where chemical neutralizers are insufficient or require confirmation of cytotoxicity removal

• Regulatory Compliance

  • Supports compliance with international requirements for disinfectant and sanitizer product registration, especially regarding virucidal claims

• Research and Development

  • Facilitates accurate virological assays by ensuring cell health, allowing comparison of product performance across laboratories

Related Standards

For a comprehensive approach to virucidal efficacy and cytotoxicity assessment, consider these associated ASTM standards:

• ASTM E1052: Practice to Assess the Activity of Microbicides Against Viruses in Suspension
• ASTM E1053: Practice to Assess Virucidal Activity of Chemicals Intended for Disinfection of Inanimate, Nonporous Environmental Surfaces
• ASTM E2756: Terminology Relating to Antimicrobial and Antiviral Agents

Using ASTM E1482-23 in conjunction with these standards helps ensure valid, reproducible, and regulator-approved data for antiviral and disinfectant product testing.

Keywords: cytotoxicity reduction, gel filtration columns, viral infectivity assay, disinfectant efficacy testing, neutralization, virology, ASTM E1482-23, virucidal, tissue culture, handwash evaluation, nonporous surface disinfection