27450 Molecular Sieve Desiccant


The 27450 is molecular sieve desiccant material to refill the bottles in the 27423 Scrub Module. This desiccant is included with the scrub module and is available as a replacement part. The 27450 consists of 13 x 1.6-2.5 mm beads in a 250 g bottle.



Amount 250 g (8.82 oz)

Frequently Asked Questions

Number of FAQs related to 27450: 4

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  1. The bottles of sieve for drop-in replacement contain the pellets and a membrane on top. The membrane is necessary to keep the pellets contained while allowing gas to pass over the zeolite. The bottle has the same footprint as the old magnesium perchlorate bottles. The amount in each bottle is listed on the bottle. The amount of sieve needed for each analyzer is the following:

    • The EC150 needs 22 g (drop-in bottle).
    • The IRGASON® needs 22 g (drop-in bottle).
    • The EC155 needs 22 g (drop-in bottle).
    • The AP200 needs 500 g (refill).
    • The 27423 needs 1000 g (refill).
    • The 31022 needs 500 g (refill).
  2. The molecular sieve is a non-hazardous material that can be shipped to any country.

  3. The molecular sieve is a direct replacement for the old magnesium perchlorate bottles. The molecular sieve may be used for any Campbell Scientific analyzer that used the old bottles.

  4. The molecular sieve has been demonstrated here by our engineering department to be effective at removing CO2 and H2O from the air sample. The change was made for two reasons:

    1. It was a safer alternative than using the previous chemicals.
    2. Increased shipping regulations for the chemicals limited the number of suppliers. 

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