Key Benefits

• Naturally purifies and improves the taste of tap water.

• Removes chlorine and add minerals.

• Each filter lasts for up to 6 months.

Made from premium Binchotan charcoal, this filter harnesses traditional Japanese methods to purify and soften water. Binchotan charcoal is sourced sustainably from the branches of fast-growing trees in Laos, ensuring minimal environmental impact. The charcoal's active carbon works effectively to absorb impurities like chlorine, leaving water free from unpleasant tastes and odours.

Designed to fit most bottles and jugs, it starts working within an hour and filters 1.1L of water daily, lasting up to three months. When it needs a refresh, simply boil it for 10 minutes to extend its life by another 3 months. Even if it breaks, the charcoal pieces can still be used, making this an easy, sustainable way to reduce waste while enjoying better hydration every day.

Ideal for those wanting better-tasting water and to reduce waste, this filter comes with no extra plastic packaging. It also provides a natural way to cut down on single-use bottled water, helping users make a smarter choice for the planet.

Every Black+Blum purchase contributes to positive change. As part of the 1% for the Planet initiative, the brand donates 1% of every sale to organisations tackling food waste. These efforts support over 375 community partners, including food banks and soup kitchens, redistributing meals to those in need while reducing greenhouse gas emissions from landfill waste. Plus, their innovative products also help reduce food waste at home, making meal-prepping and storing leftovers more sustainable and convenient.

Founded by Dan Black and Martin Blum over 20 years ago, Black+Blum is a UK-based brand known for innovative, eco-conscious food containers, drinkware, and accessories. Designed with reuse and sustainability in mind, each product is thoughtfully crafted in-house using durable, eco-friendly materials where possible. With over 25 global design awards and a presence in 60+ countries, Black+Blum blends style and function to inspire sustainable living and create products people love to use and proudly own.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

-Pre-washed and ready to use.

-Can be used in any jug or bottle (*minimum spout opening 30mm / 1.2in).

-Charcoal is an incredibly dense material, so please take care when dropping into glass bottles & jugs. It is recommended to only add once bottle/jug is full.

-Store in a cool place and avoid direct sun light on your bottle/ jug. Consume the filtered water within 24hrs.

-This will filter about 1.1L of water for 3 months if used every day. Afterwards, you can just boil it for 10 minutes to ‘recharge’ the charcoal, and then use it for another 3 months.

-This charcoal is made from natural wood sticks and dimensions vary (15 to 28mm diameter, maximum length 118mm).