Aarke Pure vs Enriched Filter Granules: Which to Use?
By Aarke Official Website | Aarke | Published: 2026-10-13
Category: Product Reviews
Compare Aarke Pure and Enriched Filter Granules on taste, minerals and limescale so you can pick the right Aarke Purifier refill for your water.
Quick answer
Choose Pure Filter Granules if your main goal is softer, cleaner water with less limescale, chlorine and heavy metals. Choose Enriched Filter Granules if you also want magnesium added and a higher, alkaline pH. Both fit the same Aarke Purifier cartridge, so the decision comes down to taste and mineral preference, not hardware.
What actually separates the two granule types
Both granule types are made in close collaboration with BWT, one of the world's leading water technology companies, and both are poured into the Aarke Purifier's refillable water filter cartridge. Each bag filters up to 120 liters of water and lasts up to 4 weeks, so the refill rhythm is identical whichever you pick.
The difference is what happens after the water is cleaned. Pure Filter Granules focus on reducing limescale, chlorine and heavy metals, which makes water softer, cleaner and tastier and is a good match for tea and coffee. Enriched Filter Granules start from the same cleaning job, reducing chlorine and heavy metals, then add magnesium, an essential mineral that supports normal muscle function, and raise the pH level to create alkaline water.
How to choose in under a minute
If you live in a hard-water area and your kettle or coffee machine is the main concern, Pure is the straightforward pick. If you already filter your water and want it to taste fresher, colder and more mineral-forward, Enriched is the upgrade that changes the drinking experience rather than the cleaning result.
One practical note: neither granule type removes the need to replace the granules on schedule. Because a bag is rated for up to 120 liters or up to 4 weeks, whichever comes first, the cost per liter is the same across both options. That makes the choice about what you want in the glass, not about which is more economical to run.
Buying the right refill format
Aarke sells these granules in more than one format, and the format matters more than most people expect. The Pure Filter Granules 9-pack is a single bag of nine refill bags, equivalent to nine filter cartridge refills, which suits a household that has already settled on Pure and wants to stop reordering every month.
The Pure Filter Granules Kit and the Enriched Filter Granules Kit each include both granule types, which is the sensible first purchase if you have not yet decided. You can run Pure for a few weeks, switch to Enriched, and let your own tap water and taste buds settle the argument. If you already know you want the mineral version, the Enriched Filter Granules bag is the simplest way to restock.
Trade-offs to weigh before you refill
- Taste and mouthfeel: Pure aims for softer, cleaner, tastier water that suits tea and coffee. Enriched keeps that cleaning step but adds magnesium and raises pH, which shifts the water toward fresh, cold and mineralised. If you drink water plain, Enriched is the more noticeable change; if you mainly brew with it, Pure is the safer default.
- Limescale and appliance care: Pure is explicitly positioned around reducing limescale, chlorine and heavy metals. Enriched is described as reducing chlorine and heavy metals and adding minerals, so limescale reduction is not its headline benefit. In a hard-water area, start with Pure and treat Enriched as a taste upgrade rather than a descaling solution.
- Cost per liter: Every bag, Pure or Enriched, filters up to 120 liters and lasts up to 4 weeks. The 9-pack and the two kits simply change how many refills you buy at once, not how far each one goes. Compare pack sizes on convenience and upfront spend, not on which granule type is cheaper to run.
Aarke refill options at a glance
- Enriched Filter Granules: Enriched Filter Granules are the upgraded filtration option, designed to mineralise tap water, reduce chlorine and heavy metals, add magnesium, and increase pH to create alkaline water. This is the pick when you want the water itself to change character, not just become cleaner.
- Pure Filter Granules 9-pack: Pure Filter Granules come as a 9-pack of refill bags, equivalent to 9 filter cartridge refills, with each bag filtering up to 120 liters and lasting up to 4 weeks. Buying nine refills at once removes the monthly reorder and keeps the same per-liter cost as single bags.
- Pure Filter Granules Kit: The Pure Filter Granules Kit includes both granule types, which are made in close collaboration with BWT and each filter up to 120 liters per bag. This is the lowest-risk way to test Pure against Enriched using your own tap water before committing to a larger pack.
- Enriched Filter Granules Kit: The Enriched Filter Granules Kit also includes both granule types, with the same 120-liter-per-bag rating. If you expect to prefer the mineral version, this kit still lets you verify that against Pure before restocking.
Which granule type fits your kitchen
Best for
- Hard-water households dealing with limescale in kettles and coffee gear
- Tea and coffee drinkers who want a neutral, soft-tasting base
- Anyone who wants a simple, repeatable refill and prefers buying a 9-pack at once
Not for
- Drinkers who specifically want added magnesium and a higher, alkaline pH
- Buyers who want to taste both options before committing — choose a kit instead
- Anyone expecting either granule type to replace descaling or other appliance maintenance
