Black and Blum Active Charcoal Water FilterRegular price £10.00
Black and Blum Active Charcoal Water Filter.
Black & Blum make the ultimate reusable food and drink utensils.
We love how they've achieved the seemingly impossible - producing extremely high quality functional products that have a chic and timeless design.
Active Charcoal using a traditional Japanese Binchotan method for cleaner tasting water.
- Removes Chlorine
- Adds Minerals
- Natural Water Filter lasts for 6 months
- It makes tap water taste great!
- 1x binchotan active charcoal filters (6 months life each)
- vacuum foil packed individually
- pre-washed and ready to use
- can be used in our EAU GOOD bottle, EAU CARAFE or any jug or bottle (*minimum spout opening 30mm / 1.2in)
- Our charcoal is made from natural wood sticks and dimensions vary (15 to 28mm diameter, maximum length 118mm)
When was Binchotan charcoal first used?
About 1,200 years ago, a form of Binchotan charcoal, also called ‘white charcoal’, was thought to have been used in Japan by a Japanese monk, and scholar named Kukai. But it wasn’t until the Edo Period in the 17th century that it became really popular.
How do you make Binchotan charcoal?
A kiln is set to a relatively low temperature to heat a piece of sustainably sourced wood for a long time. Near the end of this heating process, the kiln’s temperature is increased to 1000 degrees celsius until the wood is red hot. It’s removed from the kiln and placed under a combination of sand, soil and ash which rapidly cools it, and leaves a white residue. This is why you may hear of Binchotan charcoal referred to as ‘white charcoal’. After this cooling process, the surface will become hard and smooth and if you tap, it will make a metallic sound.
How does it filter impurities?
Binchotan charcoal doesn’t just remove impurities, it also is able to release minerals like potassium back into the water. It’s covered in tiny little cavities which attract impure ions like chlorine and binds them to the charcoal, leaving the water filtered. In fact, there’s so many of these small holes that just 1 gram of charcoal has enough surface area to cover one tenth the size of a football field!
What amount of water can be filtered with a charcoal stick?
If you want to use your bottle every day, you can filter about 1.1L of water for 3 months. Just add more charcoal sticks if your container or jug is larger.
How long does a charcoal stick last?
Filling your bottle once a day (either our ‘Eau Good’ range or another 800ml bottle), every day for 3 months will require the charcoal to be boiled for 10 minutes to recharge it. Then you can use it for another 3 months.
What should I do with my charcoal stick when it’s done?
There’s many things you can do with Binchotan charcoal after you’ve finished using it: it removes bad smells if added to cat litter trays or nappy bins, it removes moisture from the air if you add it to your wardrobe or drawers, and it adds nutrients to the soil if you pop it in with your houseplants (break it up first).
Should I wash my charcoal?
No, it’s already washed and can go straight into your bottle.
What else can I add to the water with my charcoal stick?
You shouldn’t add anything else to the water you want to filter with a charcoal stick, this includes fruit, herbs, teas or infusions.
Is charcoal bad for you if you swallow it?
Sometimes, small pieces or flakes of charcoal will break off and be found floating in your water. Don’t worry if you should swallow any of these, they are not dangerous. In fact, charcoal is sometimes used to treat things like upset stomachs, diarrhea and even hangovers.
How do I wash my bottle if the charcoal is in it?
Simply remove the charcoal stick before washing any bottle, carafe or other vessel with soap.