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There are several industry accepted tests for feather and down fill used in bedding and other finished products. This section will help explain three of the most prominent tests and explain the importance of both internal and independent ou...
Fill power is a measure of how 'fluffy' or 'lofty' down is. The higher the fill power, the more it traps air, and it's trapped air that keeps the sleeper warm. The actual test involves weighing and filling a cylinder tube with 28.4 grams of down. A specially calibrated weight is then placed on top of the cylinder and its weight is slowly allowed to fall onto the down...
Turbidity is a technique that involves measuring 10 grams of down and placing it into a special beaker with 1 liter of water. This beaker is then sealed up and vigorously shaken for 15 minutes. After 15 minutes, the mixture is strained usin...
The oxygen test is a technique where the presence of organic materials is measured. Organic materials are found in unwashed products that come from the meat processing plants - including blood from the waterfowl. The test is somewhat compli...
Down testing is best performed after the down is washed and dried and before it is used in the final products. This allows tighter control over products all the way through final production. Some feather and down processors do their own int...
There are many labs for the testing of down products - two of which are: The International Down and Feather Laboratories (IDFL) and the Independent Down Laboratory (IDL). Both of these facilities regularly test down from both down processor...