Binchotan Charcoal Water Filter - Black & Blum

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Code: Char_Filter

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  • Description
  • FAQ

It may seem counter intuitive to purify your drinking water with a stick of charcoal, but the Japanese have been doing it for centuries - and it makes your tap water taste great. 

It adds minerals (such as calcium) and removes chemicals (such as chlorine). 

You can pop it into any water bottle, jug or other holder you have and it lasts for 6 months! 

Binchotan is also an effective moisture absorbent and can help absorb humidity in the air if placed in a wardrobe. 

This is 1 vacuum wrapped* binchotan active charcoal filter 

  • 100% natural wood 
  • Makes tap water taste great 
  • Each filter lasts up to 6 months (with a recharge by boiling after 3 months - see below) 
  • Pre-washed and ready to use 
  • Fits in any water bottle or jug
  • Size: 11.8cm high, 2.5cm wide approx 
  • Do not wash with soap. 

* Due to the highly absorbent nature of charcoal it needs to be vacuum packed for storage, so yes, there is some plastic but we figure it is far better than the current filters on the market.

Please check out the FAQ for lots more info on these amazing filters

What is the history of Binchotan charcoal? 

The origins are not completely clear, but it is believed that a form of Binchotan charcoal (sometimes referred to as 'white charcoal') was introduced to Japan by a Japanese monk and scholar called Kukai 1,200 years ago. It was during the Edo Period (17th century) that a man called Binchuya Chozaemon made it popular. 

How is it made? 

Sustainably sourced wood is placed in a kiln and charred at a relatively low temperature for some time, then, near the end of the process, the kiln temperature is raised to about 1000 degree Celsius to make the wood red-hot. The charcoal is then removed and quickly covered with a special powder made from earth, sand and ash, and this gives the charcoal surface a whitish hue (explaining the name 'white charcoal'). The rapid rise in temperature, followed by a rapid cooling, incinerates the bark and leaves a smooth, hard surface. If you strike it, you'll hear a clear, metallic sound.

How does it work? 

Binchotan charcoal has an incredibly porous surface with tiny cavities oriented in many directions. Just 1 gram has a surface area in excess of 500 m2 (about one tenth the size of a football field). It is also known as active carbon as the ions of contaminants are attracted to the surface of the carbon, where they will be held. It is also able to release minerals such as calcium, iron and magnesium back into the water which enhances its taste and health benefits. 

How long will it last? 

If you are using your Binchotan with an average sized water bottle (750ml) and fill it up once a day, then it should last three months. You are then able to recharge it by boiling it in water for ten minutes and then leaving to dry in sunlight. You should be able to keep recharging it for a further three months. 

What other uses does the binchotan have? 

  • When you have finished using your binchotan as a water filter, it still has many secondary uses. If you break it up and put it in your house plants, it will add nutrients to the soil that will help the plant to grow. 
  • Because of its porous surface, it can be used as a deodoriser to remove unwanted odors in your cat litter, laundry basket, nappy bin or shoes. 
  • Binchotan is also an effective moisture absorbent, and can help absorb humidity in the air if placed in a wardrobe. 

Do I need to wash my charcoal? 

Your binchotan charcoal is already washed and ready to use. Please do not wash with detergent or soap. 

Can I use my binchotan with flavoured water (fruit infused or tea)? 

Please do not use with flavoured cordials, fruit infusions or tea.

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Customer reviews

Bought one of these for the water cointainer in the fridge, water tastes real good and filtered. It has saved me purchasing plastic cartridges for water jug


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