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SKC Coated Filters
Pretreated, Preloaded, and Prebanded

  • Ready to use

  • Time-saving

  • Convenient alternative to impinger wet chemistry methods

  • Economical

  • No assembly required
    • Preloaded into cassettes with end plugs and shrink bands

  • Meet agency method specifications

  • No cumbersome collection liquids or glass

  • Easy personal sampling

  • Small package size for short shelf-life product

  • Custom coated filters are available
coated filters in preloaded cassettes

SKC Coated Filters make sampling reactive compounds fast and easy. They are a convenient alternative to wet chemistry methods using impingers. Simply unplug the lightweight cassette, insert it into an SKC Filter Cassette Holder, clip holder to a worker’s collar, and attach to a personal sample pump. Use coated filters to collect compounds that exist as an aerosol or mist or for some higher boiling vapors. Flow rates are typically greater than 1 L/min and sampling times range from 15 minutes to one hour. Most coated filter samples are extracted in solvents and analyzed by gas or liquid chromatography. SKC offers coated filters to meet a variety of OSHA, NIOSH, ASTM, and international agency methods.

ISO-CHEK Coated Filter System Developed for Isocyanates
Traditional methods for isocyanate collection (NIOSH Method 5521 with impinger and OSHA 42 with 1-2PP impregnated filter) yield samples that are susceptible to degradation under ambient conditions, require time-consuming sample preparation, and can provide ambiguous results. The IRSST (Institut de recherché Robert-Sauvé en santé et en sécurité du travail du Québec) minimized these problems by developing and patenting the ISO-CHEK Sampling System. The ISO-CHEK dual-filter cassette captures isocyanate aerosols and vapors simultaneously and separately at the point of collection. This collection method is highly stable, allows rapid sampling, and provides for highly sensitive physical and chemical characterization of isocyanates.

Sample Time Varies; 15 minutes to 1 hour
Sample Rate Typically >1
Sample Pump AirChek series
Analysis Typically solvent extraction and gas or liquid chromatography

 

Ordering Information    

Coated Filter Selection Chart
For Agency Methods
Chemical
Method*
Filter and Coating
37-mm cassette with shrink bands
Coated filters have a limited shelf-life
Notes Qty. Cat. No.
Acetic anhydride
OSHA 82
2 Glass filters; 1-(2-pyridyl) piperazine
4-piece, 37-mm cassette
1 10 225-9009
Acetic anhydride
OSHA 102
2 Glass filters; veratrylamine and di-n-octyl phthalate
4-piece, 37-mm cassette
3 10 225-9010
4-Aminobiphenyl
OSHA 93
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Aniline
NIOSH 2017
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
6 10 225-9004
Arsenic, inorganic
(volatile compounds as As)
OSHA ID-105
1 MCE filter and cellulose pad; sodium carbonate
3-piece, 37-mm cassette
  10 225-9001
Benzidine
OSHA 65
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Bromine
NIOSH 6011
1 PTFE pre-filter and polypropylene support;1 specially cleaned silver membrane and polypropylene support
3-piece, 25-mm cassette
  5 225-9006
Chlorine
NIOSH 6011
1 PTFE pre-filter and porous plastic support; 1 specially cleaned silver membrane and porous plastic support
3-piece, 25-mm cassette
  5 225-9006
Crotonaldehyde
OSHA 81
2 Glass filters; 2,4-dinitrophenylhydrazine and phosphoric acid
3-piece, 37-mm cassette
1 10 225-9019
o-Dianisidine
OSHA 71
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
3,3'-Dichlorobenzidine
OSHA 65
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Diisocyanates —
1,6-Hexamethylene diisocyanate (HDI),
Toluene-2,4-diisocyanate (2,4-TDI),
Toluene-2,6-diisocyanate (2,6-TDI)
OSHA 42
1 Glass filter and cellulose support; 1-(2-pyridyl) piperazine
3-piece, 37-mm cassette
1,4,0 10 225-9002
1,3,4,0 10 225-9013
Diisocyanates —
Toluene-2,4-diisocyanate (2,4-TDI),
Toluene-2,6-diisocyanate (2,6-TDI)
ASTM D5836
1 Glass filter and cellulose support; 1-(2-pyridyl) piperazine
3-piece, 37-mm cassette
1,4,0 10 225-9002
1,3,4,0 10 225-9013
Diphenylamine
OSHA 78
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Fluorides
OSHA ID-110
NIOSH 7902
NIOSH 7906
ASTM D4765
1 MCE filter and cellulose pad; sodium carbonate
3-piece, 37-mm cassette
8 10 225-9001
Glutaraldehyde
OSHA 64
2 Glass filters; 2,4-dinitrophenyl hydrazine and phosphoric acid
4-piece, 37-mm cassette
1 10 225-9003
Hydrazine
OSHA 108
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9012
Hydrogen peroxide NON 57 1 Quartz filter; titanium oxysulfate hydrate
2-piece 25-mm cassette
z 10 225-9030
Isocyanates
Toluene-2,4-diisocyanate (2,4-TDI),
Toluene-2,6-diisocyanate (2,6-TDI),
Hexamethylene diisocyanate
ASTM D5932
ASTM D6561
ASTM D6562
1 PTFE filter, 1 glass fiber filter treated with MAMA
(ISO-CHEK Sampling System)
3-piece, 37-mm cassette
5
12 225-9022
5
36 225-9022A

Isocyanates
Hexamethylene diisocyanate (HDI)
Hexamethylene diisocyanate biuret (HDI-BT)
Hexamethylene diisocyanate isocyanurate (HDI-IC)
Isophorone diisocyanate (IPDI)
4,4-Methylene bisphenyl isocyanate (MDI)
2,4-(Toluene diisocyanate) (2,4-TDI)
2,6-(Toluene diisocyanate) (2,6-TDI)

Oregon-OSHA 1010 1 glass fiber filter; MAMA
13 mm preloaded in a 13-mm Swinnex holder
1,y 5 225-9029
Isocyanates, organic
MDHS 25/3 (UK)
AE Glass filter; methoxyphenyl piperazine
25-mm filters only, not in preloaded cassettes
1,7 5 225-9011
n-Isopropylaniline
OSHA 78
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Maleic anhydride
OSHA 86
2 Glass filters; veratrylamine
3-piece, 37-mm cassette
1 10 225-9021
Maleic anhydride

Glass filter; veratrylamine
25-mm filters only, not in preloaded cassettes

1 10 225-9028
Mercaptans
(methyl-, ethyl- , n-butyl-, and phenyl-)
NIOSH 2542
OSHA 26
OSHA PV2075
1 Glass filter; mercuric acetate
2-piece, 37-mm cassette
1 10 225-9007
4,4'-Methylene bis (2-chloroaniline) (MOCA)
OSHA 71
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Methylene bisphenyl isocyanate (MDI)
OSHA 47
1 Glass filter and cellulose support; 1-(2-pyridyl) piperazine
3-piece, 37-mm cassette
1,4,0 10 225-9002
1,3,4,0 10 225-9013
4,4'-Methylenedianiline
OSHA 57
NIOSH 5029
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
9 10 225-9004
1-Naphthylamine
OSHA 93
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
2-Naphthylamine
OSHA 93
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Nitrobenzene
NIOSH 2017
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
6 10 225-9004
Ozone
OSHA ID-214
2 Glass filters; nitrite-impregnated
3-piece, 37-mm cassette
1,3 10 225-9014
Phenylenediamine
(o-, m-, p-)
OSHA 87
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
Phosphine
OSHA 1003
1 Glass filter; 1 polyester filter treated with mercuric chloride
3-piece, 37-mm cassette
1,3 10 225-9018
Sulfur dioxide
NIOSH 6004
(modified)
1 MCE pre-filter and support/1 cellulose filter and support; sodium carbonate
3-piece, 37-mm cassette
  10 225-9005
o-Tolidine
OSHA 71
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
2,4-Toluendiamine
OSHA 65
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
2,6-Toluendiamine
OSHA 65
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
o-Toluidine
NIOSH 2017
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
6 10 225-9004
Toluidine
(o-, m-, p-)
OSHA 73
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004
1,3,5-Triglycidyl isocyanurate (TGI)
OSHA PV2055
1 Glass filter; hydrobromic acid
2-piece, 37-mm cassette
  10 225-9027
n-Valeraldehyde
OSHA 85
3 Glass filters; 2,4-dinitrophenylhydrazine and phosphoric acid
3-piece, 37-mm cassette
1 10 225-9020
m-Xylylenediamine,
p-Xylylenediamine
(m-XDA, p-XDA)
OSHA 105
2 Glass filters; sulfuric acid
3-piece, 37-mm cassette
  10 225-9004

Table Notes
1 Storage below 39.2 F (4 C) required

3 Custom order due to very limited shelf-life

4 While meeting the specifications of OSHA Methods 42 and 47, Coated Filter Cat. No. 225-9002 contains a higher than specified loading of reagent to increase stability and shelf-life. Coated Filter Cat. No. 225-9002 traps both vapor and aerosol phases. SKC also offers Coated Filter Cat. No. 225-9013 that contains the specified reagent loading for OSHA 42 and 47 but has a freezer shelf-life of only three months.

5 Meets multiple ASTM methods:
ASTM D5932 for 2,4 and 2,6-TDI
ASTM D6561 for HDI
ASTM D6562 for HDI

6 NIOSH Method 2017 also requires SKC Sorbent Tube Cat. No. 226-15.

7 Filters only; not in preloaded cassettes

8 Collects both vapor and aerosol phases of fluorides. The concept of sampling for fluorides in air using a double filter is patented in Canada by IRSST (Institut de recherche en santé et Robert-Suavé en sécurité du travail du Québec), 21-April-92, Patent No. 1,299,114.

9 OSHA 57 is an update of NIOSH 5029 which called for a single filter
0 OSHA Directive CPL 03-00-017
ASTM D5836 and D5932 for 2,4-TDI, 2,6-TDI only
* The methods listed are the most widely used. Additional methods may be listed in the Sampling Guide or use the search form below.
y
Requires Impinger Cat. No. 225-36-1
z Also requires Sorbent Tube Cat. No. 226-193 or 226-199 for simultaneous, separate sampling of peracetic acid. See Method Note.
For inhalable TLV; analysis by OSHA 86
  Non 57: Hecht, G., et. al., Simultaneous Sampling of Peroxyacetic Acid and Hydrogen Peroxide in Workplace Atmospheres, The Annals of Occupational Hygiene, Vol. 48, No. 8, 2004, pp. 715-721

 

Search for Methods for SKC Coated Filters

To search for methods which use a particular SKC Coated Filter, enter the exact SKC Catalog Number in the search box.

Enter SKC Catalog Number:

 

Chemical Name CAS No. Method Description and Cat. No.

For detailed information of Methods refer to SKC's:

Coated Filters in Preloaded Cassettes Spec. Sheet (PDF)

Operating Instructions (PDF)

   

 

Material Safety Data Sheets (PDF)

9-(Methylaminomethyl) Anthracene (MAMA) (Cat. Nos. 225-9022, 225-9022A, 225-9023, 225-9023A)

Derivatizing Solution containing 1-(2-Methoxyphenyl) Piperazine (MOPIP) in Toluene (Cat. Nos. 225-9023, 225-9023A , 225-9050)

Custom Filters Available
For specific applications, SKC will manufacture filters to meet your specific requirements. Download the Custom Filter Order Form in PDF format. Complete the form and fax it to your SKC representative, contact your SKC representative, or call the SKC Sales Department at 724-941-9701 for more information.

Custom Filters Order Form (PDF)
This page was last modified June 11, 2014
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