This part of YY/T 0471 describes the test methods recommended for the evaluation of moisture vapor transmission rate of permeable film primary wound dressings.
2 Terms and definitions
For the purposes of this part, the following terms and definitions apply.
2.1
moisture vapor transmission rate (MVTR)
permeability of materials to the passage of water molecules from skin contact site to the external atmosphere under controlled conditions of humidity and temperature
2.2
permeable wound dressing
wound dressing that permits moisture vapor to pass from the skin or wound through it to the external atmosphere
2.3
primary wound dressing
material or combination of materials, in any shape, form or size that is intended to remain in direct contact with a wound
Note: primary wound dressing are used as mechanical barriers, for the absorption or transmission of exudates, to manage the micro-environment of the wound, and can enable the wound to heal by primary or secondary intent. Devices which have a metabolic, pharmacological or immunological interaction as their primary intent are excluded.
3 Test method for moisture vapor transmission rate (MVTR)
3.1 Test conditions
Unless otherwise stated, condition the test sample and carry out the tests at a temperature of (21±2)℃ and a relative humidity (RH) of (60±15)%.
YY/T 0471.2-2004 The following standards are cited：
YY/T 0471.2-2004 Cited by the following standards：
