Bamboo Forests

Our high-quality filters are made using the same traditional Binchotan process described here. Firstly, the bamboo is grown in north Fujian, a south eastern province of China. Bamboo has been grown here sustainably for many years and since it is a grass, it grows back after being cut down, unlike trees. The bamboo is harvested every four to five years to be converted into Binchotan charcoal through the process described below.

Feeling Hot Hot Hot

The next stage of the bamboo charcoal production process is handled by highly-skilled charcoal makers in Fujia. Here the lengths of bamboo are placed in hand-built clay kilns where the temperature reaches 800 degrees and above in a process called carbonisation. The bamboo is not burned but carbonised which can best be explained by the analogy of vaping vs smoking – the bamboo is heated in a tightly-packed room starved of oxygen to prevent ignition.

As you can see above, additional oxygen is prevented from entering the kiln once the desired temperature is reached by sealing off the front of the kiln with bricks. The carbonisation process can take up to 35 days during which volatile organic compounds, hydrocarbons and steam leave the bamboo leaving almost pure carbon

During the final stage of carbonisation the bricks are removed from the kiln opening during the last day to allow some oxygen to enter, thus increasing the temperature inside the kiln to approximately 1000 degrees Celsius. This process strengthens the bamboo so it does not crumble like typical charcoal would after burning.

Once the carbonisation process is complete, the binchotan charcoal is removed and then covered in a damp mixture of earth, sand and ash where it is left to cool.

Now there you have it—that is how Natural Filters are produced. They are then packed and shipped to Australia one large batch at a time, to minimise carbon emissions associated with single-item shipping from overseas online shops and suppliers.

Buy Now