How to recognize quality pellets

Must me formed by cylinders with a constant diameter with a smooth and shiny surface. In the pack should not be a lot of wood waste.

Throwing a few of pellet in water, if the product is of high quality, will sink, contrary if float it is not.

Must control that the package reports all the details of quality certifications. Must control that the package is whole, as the pellets absorb moisture.

The moisture reduce the calorific and increase the fumes, but swollen the product creating problem with stoves and boilers.

What is Pellet
How to recognize quality pellets
Devices that use pellets