Black+Blum Eau Good Charcoal Refill
It makes tap water taste great!
It may seem counterintuitive to purify your drinking water with a stick of charcoal, but the Japanese have been doing it for centuries. Binchotan—an active carbon made from tree branches—is renowned for its ability to soften water, add good minerals and absorb unwanted tastes and odors, such as chlorine.
Our binchotan is cut to a fixed length, so it slots perfectly into our 'eau good' BPA free water bottle. But you can use it with any bottle, carafe or jug. Leave it overnight in ordinary tap water and it will transform it into delicious tasting pure water.
We hope this will encourage you to drink tap water and stop buying bottled water.
(IMPORTANT NOTE - must only be used with drinking safe tap water).
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 our 'eau good' bottle 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.
Binchotan also has allegedly has many health benefits. It can supposedly dissipates 'hazardous' electromagnetic waves from computer monitors and also generates negative ions.
Use and care
Your binchotan charcoal is already washed and ready to use. Please do not wash with detergent or soap. Please do not use with flavoured cordials or juices. Please remove the binchotan from the bottle you are using it with these before washing it. Boiling the binchotan for 10 minutes in water will release the impurities it has been holding.
Occasionally you will notice tiny particles / fragments of the charcoal in the water, but do not be alarmed as it will do you no harm if you swallow them (active charcoal tablets are prescribed to treat diarrhoea, digestion and flatulence).
We dispatch as fast as possible direct from stock. Orders placed before 12 noon are dispatched the same working day.
Standard delivery is 2-5 working days (2nd class mail) for small items
FREE STANDARD DELIVERY is available on orders over £40 within Mainland UK. Under £60 standard delivery is low cost depending on weight ranging between £1.95 and £5.95
FREE CLICK AND COLLECT is available from our Wapping Wharf, Bristol Store. You'll be given the option during check out
Larger items are sent next day courier
Highlands and islands may vary
Fast delivery is available UK mainland / lowlands only and will be sent for next working day on orders before 12pm
Available to Order
Items listed as available to order are not in stock however are usually available within 1-2 weeks. If you order these items we will contact you as soon as possible to confirm an estimated delivery timescale.
Stock levels are advertised on our website. If a stock error should occur we will try to contact you as soon as possible. If you need more than the stock available please call us and we can give you an estimated delivery
Next day courier services are delivered on working days i.e. Monday - Friday except Bank Holidays.
SMS Alerts: most of our delivery companies can provide SMS alerts if you include a valid mobile number when ordering.
Damages in Transit - Inform Us Within 48 Hours
As per our terms and conditions, all damages in transit must be reported to us within 48 hours of receipt to firstname.lastname@example.org. We can then work out the best way to help you or provide a replacement. We therefore ask you to carefully check your order as soon as it arrives.
Unwanted Items - Our 14 Days Return Policy
We understand that sometimes an item arrives and it’s not quite suitable for what you needed it for - no problem. Please email us first at email@example.com to discuss the details.
You have 14 days from receipt to return the item
If you are returning over £30 of items we will provide you with a returns label - please email us to request
Returns below £30 are at your cost
Items remain your responsibility in transit - please pack them carefully.
Please ensure you include your name and address in all returns so we can trace your order.
Our return address if Fig1, Unit 9 Gaol Ferry Steps, Wapping Wharf, Bristol BS1 6WE.