Tank of molecular sieve COLTRI 1Litre

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Price excluding tax / DOM-TOM €26.67

Molecular sieve for COLTRI breathing air compressor. Absorbs moisture during compressing process.

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Tank of molecular sieve COLTRI 1Litre

Tank of molecular sieve for breathing air compressor

The molecular sieve absorbs most of the moisture present in the compressed air as water vapor. It also has the particularity of partially retaining the CO2 molecules from gasoline engine compressors.

Coltri molecular sieve is compatible to recharge any type of final filter cartridge of high-pressure compressor (Coltri, Compair, Bauer, Lenhard & Wagner, Nardi, Cirrus ...)

Technical characteristics:

  • Average particle size: 1.6 mm
  • Size: 4 Ä


  • Resealable water bottle of 1 liter
  • Other packaging available (5L, 10L, ... contact us)

Number of possible refills with a 1L *

* For Coltri cartridges. It is necessary to respect the proportions of 1/4 of activated carbon - 3/4 of molecular sieve.

cartridges of MCH8, MCH11, MCH13, MCH16, MCH18, MCH26, MCH32: 3-4 cartridges
cartridges of MCH30, MCH36: 1 cartridge

The renewal frequency depends on the size of the compressor filter, the humidity, the purge frequency and mainly the inlet temperature of the filter cartridge.

Attention, contrary to popular belief, the temperature to be taken into account is the filter cartridge inlet temperature and not the compressor inlet temperature or the compressor room. Indeed, the compression of high pressure air requires the passage through several compression stages and at the output of each compression stage, the air rises to over 120 ° C temperature. The compressed air is then cooled by cooling coils, but no manufacturer has yet succeeded in developing a compressor that was able to cool the air at the outlet of the last stage at a temperature equal to the air entering the compressor. . Of course, the better the room is ventilated, the better the cooling of the air. In the case of a well-ventilated room, the inlet temperature of the filter cartridge is generally 10 ° C higher than the suction temperature. In the case of a poorly ventilated room, it is not uncommon to have a filter cartridge inlet temperature greater than 15 to 25 ° C with respect to the inlet temperature in the compressor.

Refer to the data sheets of the cartridges to know the autonomy according to the temperature of use.


The molecular sieve is a product that is poorly preserved over time (3 to 6 months in its original container after opening). It is therefore not recommended to order too much (5L cans for example which is only suitable for clubs or dive centers whose compressor runs more than 300 hours per year).

For a 16m3 / h compressor, 1 liter of molecular sieve allows compressor use of 160 hours per year (at an average temperature of 20 ° C).

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