Here you can buy activated charcoal filters from Purize, actiTube and GIZEH in Regular (8 mm), Slim (6 to 7 mm) and Xtra Slim (5.9 mm), mostly in packs of 40 or 50. All have an activated charcoal core between two ceramic or paper caps and fit hand-rolled joints as well as cigarette tubes.
What an activated charcoal filter does
Activated charcoal has a very large internal surface. When you draw, tar, suspended particles and some of the bitter compounds stick to it. The smoke is cooler and smoother, while the flavour of the flower is largely preserved. Cannabinoids such as CBD are not retained to any notable degree because they travel in the vapour, not as particles.
Which size fits which paper
Xtra Slim (5.9 mm) suits narrow papers such as King Size Slim and Purize Papes. Slim (6 to 7 mm) is the standard for most rolling papers. Regular (8 mm) fills wide papers and blunts and draws a little easier. For a cigarette tube, choose Slim or Regular depending on the tube.
The three brands compared
Purize comes from Germany, with coloured variants (blue, pink, yellow) and an Organic line in unbleached paper. actiTube is the Berlin classic with ceramic caps, in Standard, Regular and Slim. GIZEH is the budget entry with 6 mm filters, also as Xtra Slim in pink.
How to insert the filter, how often to change it and how it differs from a regular filter tip: see the guide Activated charcoal filters for joints and cigarettes. Matching papers are under Rolling papers and blunts, all filter types under Filters and filter tips.
