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Filter Papers

Filters for Staplex Model TFIA, TFIA-2, TFIA-4 High Volume Air Samplers

TYPE FILTERS

FLOW RATE, (approx).

CHARACTERISTICS

TFA41
4”
(10.16 cm)
Diameter

15-20 cfm
.4-.6 cmm

Ashless paper. 95% collection efficiency of 1 micron. 58% DOP on 0.3 micron particles. Easily countable for Alpha particles, obtaining 70% count and a penetration absorbtion of approximately 30%. Good efficiency for industrial dusts and for particulate matter size 10 microns and under to submicron to .01 micron. Sampler may be operated for approximately 1 hour without overheating. Dissolvable with dimethylphthlate

TFAGF41 Glass Fiber
4" Diameter

15-20 cfm
.4-.6 cmm

Binderless. Very high retention of fine particles. 99.98% retention efficiency of 0.3 micron particles. Recommended wherever gravimetric weighing analysis is used because of non-hydroscopic properties. Sampler may be operated for approximately 1 hour without overheating. Also see data on Glass Fiber Filters below.

TFA69
6" x 9"

50-58 cfm 1.4-1.7 cmm

Same Specs. As TFA41, except Sampler may be operated for approximately 24-48 hours.

TFAGF69 Glass Fiber
6" x 9"

50-58 cfm 1.4-1.7 cmm

Same specs as above. Also see data on Glass Fiber Filters below.

TFA810
8" x 10"

60-70 cfm
1.7-2 cmm

Same Specs. As TFA69.

TFAGF810 Glass Fiber
8" x 10"

60-68 cfm
1.7-2 cmm

Same Specs. As Above. Also see data on Glass Fiber Filters below.

TFA2133 4"
Diameter
36-40 cfm 1.0-1.1 cmm Moderate flow rate. Moderate resistance buildup. 95% Collection Efficiency of particles 0.5 microns and over. Countable for Beta Radiation. Sampler may be operated for one hour or more depending upon saturation without significantly overheating.

TFAQ810 Quartz Fiber
8" x 10"

60-68 cfm
1.7-2 cmm

Pure quartz.  Binderless.  99.9% retention efficiency of 0.3 micron particles. Recommended for PM10 and PM2.5 High Volume Air Sampling

NOTES: cfm = cubic feet per minute; cmm = cubic meters per minute (35 cfm = 1 cmm)

 

Staplex® Slotted Filter Media for

High Volume Cascade Impactors

Models 234, 235 & 235  

(Click for info on Staplex High Volume Cascade Impactors)

use between each impactor stage. Size: 14.3 cm x 13.7 cm (5.63 in. x 5.38 in.)

TFAS810 Slotted Cellulose Filters (100 per box)

TFAGFS810 Slotted Glass Fiber Filters (100 per box)

TFAQS810 Slotted Quartz Fiber Filters (25 per box)

 

GLASS FIBER FILTER DATA

Glass Fiber Filters are especially recommended wherever gravimetric weighing analysis may be required because of their non-hygroscopic properties, i.e. they will maintain constant weight under wide-ranging conditions of ambient humidity. Their excellent loading characteristics make them ideal for routine air monitoring and for specialized monitoring of solid pollutants, microrganisms, oil and acid smokes etc. They are particularly recommended where higher efficiency collection of fine particles is required. They exhibit higher particle capacity then cellulose filters. Their fine optical characteristics make them ideal for sensitive and accurate measurement of collected smoke par­ticle. Used especially for on-the-spot visual examination and instrumentation. Glass Fiber Filters have a higher den­sity then paper filters and can tolerate a far wide useful temperature range.

Composition of the Glass Fiber Filter is of such a nature that the finely woven texture of microfilaments of glass creates the highest sampling efficiency. The efficiency of the Glass Fiber Filters at the relative flow rate for particles as small as .3 micron is 99.98%.

Staplex Glass Fiber Filters are binderless (i.e. they do not contain organic binders). The heat resistance is up to approximately 470-490 degrees C.

NOTES:
For Slotted Filters used with Staplex Models 234, 235 and 235 High Volume Cascade Impactors, see additional data page.

For Pre-loaded Filter Cassettes and Membrane Filters for Staplex Personal, Volumetric and Econometric Air Samplers (for asbestos, lead and other dusts), see additional data page