Can feather and down be hypoallergenic?

We require that our Feather & Down fillings meet the following minimum standards for cleanliness:
A turbidity rating of 300mm++ or above
An oxygen reading of 10 or below

These tests measure the cleanliness of the filling by looking at dust & particle content and fat & oil content respectively within the filling.

A Feather & Down filling is generally considered hypoallergenic or super-clean when the turbidity rating is 550mm++ or above and the oxygen reading is 10 or below. All of our ranges that meet both of these criteria have Oxygen levels that exceed the requirement with a reading of 5 or below.