Solu-Sert™ Soluble Filter Capsule :: 37mm Air Sampling Cassettes :: Air Sampling Cassettes - Preloaded :: Sampling Medias & Cassettes :: Zefon International, Inc.

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Zefon International, Inc. :: Sampling Medias & Cassettes :: Air Sampling Cassettes - Preloaded :: 37mm Air Sampling Cassettes :: Solu-Sert™ Soluble Filter Capsule

Solu-Sert™ Soluble Filter Capsule  
Solu-Sert™ Soluble Filter Capsule 
Printable version

The Solu-Sert™ filter capsule is a self-contained filter "cassette capsule" that captures all particles collected by a filter cassette. It consists of an MCE filter membrane sealed to a cellulose shell to create the capsule. This capsule is then inserted into a Zefon 2-Piece filter cassette with a support pad as a complete unit. After sampling the entire capsule is removed, digested in an acid solution, and then analysis performed. This process eliminates the need to rinse or wipe the cassette interior to account for "wall deposits" and makes it ideal for performing airborne metals analysis.

  • Contains 100% of the sample collected within the capsule.
  • Meets NIOSH requirements for including "wall deposits" as part of the sample.
  • Suitable for use in 15 NIOSH methods (listed below).
  • Easy laboratory processing with NO rinsing or wiping.
  • Lightweight shell design contributes to less background and improved limits of detection vs using a heavier weight shell.

How it works

Air flows into the filter cassette through the inlet and continues into the Solu-Sert. Particulate is then contained within the Solu-Sert while the airflow continues through the filter membrane and exits out the cassette outlet.

Shell Material: Cellulose Acetate
Filter: 0.8m pore size, mixed esters of cellulose (MCE)
Weight: ~200 mg @ 50% RH


Solu-Sert is suitable for collecting the following contaminants:

Contaminant NIOSH Method
Aluminum 7013
Arsenic 7900
Barium 7046
Beryllium 7102
Cadmium 7048
Chromium 7024
Cobalt 7027
Copper 7029
Elements 7300, 7301, 7303, 7306
Lead 7082 & 7105
Tungsten 7074
Zinc 7030
= Blanks may have to be determined prior to analysis

Solu-Serts have been shown to exhibit background levels at or below the detection limit of 25 elements. Measurable background levels of Ca, Mg and P, have been detected, however these levels are not significant in relation to the Occupational Exposure Limit (OEL) for e.g., Ca, (OH)2, MgO or H3PO4. (Background levels as presented by NIOSH in "NIOSH Guidelines for Aerosol Sampling", Pg 33). Link: NIOSH Guidelines for Aerosol Sampling

PLEASE NOTE that Solu-Sert is not appropriate for gravimetric analysis. Due to the hygroscopic nature of cellulose, tare weights will not be reproducible. For gravimetric analysis using a cassette capsule, use the Zefon Gravi-Sert.

Additional Information Available

Click here to download information on using the Zefon Solu-Sert for the new NIOSH method 7306

Solu-Sert Instructions for Use

Accounting for Cassette Wall Deposits - The Zefon Solu-Sert Solution

Reference Articles

NIOSH Manual of Analytical Methods - Consideration of Sampler Wall Deposits
NIOSH Manual of Analytical Methods, Chapter O
NIOSH and AIHA Developments on Including Closed Face Cassette Wall Deposits
NIOSH Guidelines for Aerosol Sampling Presentation
OSHA On Wiping the Interior Walls of 37-mm Closed-face Cassettes: an OSHA Perspective

Solu-Sert is a trademark of Zefon International, Inc.
Manufacturer Zefon International
U/M See Description
Stock Status Normally ships within 24 Hours

Product Price Order

  25mm Solu-Sert Filter Capsule, 50/pk
  Product #: CLCL-C2550


  37mm Solu-Sert Filter Capsule, 50/pk
  Product #: CLCL-C3750


  25mm 2pc Cassette Preloaded with Solu-Sert Capsule, 50/bx
  Product #: 528MCE-SS


  25mm 2pc Cassette BANDED Preloaded with Solu-Sert Capsule, 50/bx
  Product #: 529MCE-SS


  37mm 2pc Cassette Preloaded with Solu-Sert Capsule, 50/bx
  Product #: 728MCE - SS


  37mm 2pc Cassette BANDED Preloaded with Solu-Sert Capsule, 50/bx
  Product #: 729MCE - SS


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