BILT Osmotic Scale Reduction Cloth Pack – large


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BILT Osmotic Scale Reduction Cloth Pack – large

The Bilt Osmotic Scale Reduction Cloth Pack (O.Sca.R.) is an innovative product for helping reduce limescale in your espresso machine. It converts the calcium and magnesium ions into low level sodium ions (<150 mg / liter).

The Oscar pack is very easy to use. Remove the pack from the plastic bag. Rinse the pack under cold water to remove any sediment. Place it in the water tank of your espresso machine or a pitcher filled with the water you are going to use. That’s it! No special procedures.


  • Size: 10 mm x 15 mm.
  • For 2.5 – 4 liter reservoirs.
  • Operates between 5 and 40 degrees celsius water temperature.
  • Meets FDA requirements (Heading 21, Section 173.25, par. A. Sub 1).


  1. Remove the pack from the plastic bag.
  2. Rinse under cold water to remove any sediment.
  3. Place in a pitcher or the reservoir of your espresso machine.


  • This product is not re-generable.
  • Manufacturer recommends to replace once a year.
  • This pack will not fit in the all reservoirs for espresso machines.The reservoir must be fully open for this product to easily put in and remove. Some reservoirs have a only small opening for a water hose to go in.
  • The pack should not to be placed in a boiler vessel that has a heating element. It is only meant to be in cold water.

Informational Chart:

(French degrees)
Softening Time
(80 cc)
9 3 830 13830
18 9 415 6900
27 15 276 4600
36 21 200 3300
45 27 165 2750



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    1. 0 votes
      A I put it in the machine reservoir and the water is filtered before it goes in the reservoir. That said, I don't notice any unusual taste. Interesting though...I might try brewing without it in the reservoir to see how it tastes. I have a whole home dual filter system and then I also pull the water through the fridge filter before it goes in. So I can probably do without the bag in the water. If I get anything notable, I'll add back to this.
      A It sounds as if your experience was like mine. I had used tap water for a few months without the cloth, and the taste was OK, a bit overly “bright”. Poland Spring didn’t taste right. So I added the cloth to the tap water in the tank, and the taste changed, much as you describe. It tasted flat and stale to me. So I then switched to filtered tap water and it tastes great to me now. Hope this helps. Admin's Note: There is a possibility that the water becomes too soft and alters the taste.
    2. 0 votes
      A You are absolutely correct! Try and wait 24 hours before your next brew session so it can have the full effect.
      A Yes. That is the recommendation. I did it after using tap water for a while (as the manual recommended) and didn’t like the flatter, sour taste of my espresso. I then switched to filtered water without the scale reduction cloth and am very happy now with the taste.
      A Yep
    3. 0 votes
      Answered by the admin Yes, please buy the smaller size for now as most of Italy has been closed due to COVID-19.
    4. 0 votes
      Answered by the admin If the water reservoir has a small round opening, it will not fit. Sorry, we do not have every reservoir for every espresso machine to try this on. In these cases, a pitcher filled with water would need to be used.

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