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ASTM F1868 - 23
ASTM International (ASTM)
Title

"Standard Test Method for Thermal, Evaporative Resistance and Total Heat Loss Measurements of Clothing Materials Using a Sweating Hot Plate"

Description

This test method covers the measurement of the thermal resistance, evaporative resistance, and total heat loss under steady-state conditions of fabrics, films, coatings, foams, and leathers, including multi-layer assemblies, for use in clothing systems.

Standard Type(s)
Test Method

A definitive procedure that produces a test result: Examples of test methods include, but are not limited to: identification, measurement, and evaluation of one or more qualities, characteristics, or properties. A precision and bias statement shall be reported at the end of a test method.

Personal Protective Equipment
Body Protection

All items of clothing and/or accessories (whether or not detachable) designed and manufactured to provide specific protection. This includes bullet-proof clothing, general protective clothing and full body ensembles that protect from cuts, radiation, temperature extremes, hot splashes from molten metals and other hot liquids, potential impacts from tools, machinery and materials and hazardous chemicals. Examples of body protection include laboratory coats, coveralls, vests, jackets, aprons, surgical gowns and full body suits

  • Environmental protective clothing
Hazards
Thermal
  • Flame and Thermal
SOC Codes
33-0000 Protective Service Occupations
  • 33-2000 Fire Fighting and Prevention Workers
    • 33-2011 Firefighters
    • 33-2022 Wildfire Prevention Specialists
Standard References
Referenced Standard

ASTM F1291 - 22(https://wwwn.cdc.gov/PPEInfo/Standards/Info/ASTMF129122) - Standard Test Method for Measuring the Thermal Insulation of Clothing Using a Heated Manikin

ASTM F1494 - 23(https://wwwn.cdc.gov/PPEInfo/Standards/Info/ASTMF149423) - Standard Terminology Relating to Protective Clothing

ASTM F2370 - 22(https://wwwn.cdc.gov/PPEInfo/Standards/Info/ASTMF237022) - Standard Test Method for Measuring the Evaporative Resistance of Clothing Using a Sweating Manikin

ISO 11092:2014(https://wwwn.cdc.gov/PPEInfo/Standards/Info/ISO110922014) - Textiles - Physiological effects - Measurement of thermal and water-vapor resistance under steady-state conditions (sweating guarded hotplate test)

Conformity Assessment Notes

This test method covers the measurement of the thermal resistance and the evaporative resistance, under steady-state conditions, of fabrics, films, coatings, foams, and leathers, including multi-layer assemblies, for use in clothing systems.  Please see the full standard for complete details.

Comments

Additional References:

ASTM Standards

  • C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus
  • D1518 Test Method for Thermal Resistance of Batting Systems Using a Hot Plate (withdrawn 2023)
  • E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
  • E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
  • F1291 Test Method for Measuring the Thermal Insulation of Clothing Using a Heated Manikin
  • F1494 Terminology Relating to Protective Clothing
  • F2370 Test Method for Measuring the Evaporative Resistance of Clothing Using a Sweating Manikin
  • F3426 Test Method for Measuring the Thermal Insulation of Clothing Items Using Heated Manikin Body Forms

ISO Standards

  • ISO 11092 Textiles–Physiological Effects–Measurement of Thermal and Water-Vapour Resistance Under Steady- State Conditions (Sweating Guarded-Hotplate Test)
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