The Exchange Test Method

LABORATORY TEST METHOD NO. H-3: DISPERSION- PERSONAL HYGIENE PRODUCTS

  1. PURPOSE:

    To measure the ability of personal hygiene products to allow migration of fluid. The ability of a specimen to let fluid or moisture migrate or disperse within itself is directly related to the user feeling dry. The higher the dispersion value, the better a specimen is.
  2. PRINCIPLE:

    A predetermined amount of solution is poured into the center of a specimen and allowed to travel or disperse within the specimen to determine the amount of dispersion.
  3. APPARATUS AND MATERIALS:

  4. PROCEDURE:

  5. EVALUATION:

    Measure the longest dimensions of the stain in mm. The higher the dispersion value, the better the specimen.
  6. REPORT

    Report the amount of dispersion in mm.