PSL Spheres, 20-900nm | PSL Spheres, 1-160um | Silica Nanoparticles | PSL Spheres, SurfCal | PSL Spheres, NIST SRM | PSL Spheres, HEPA Test | OptiBind PSL Spheres

There is a worldwide growing demand for polystyrene latex sphere particles (PSL) by filter manufacturers, end-users and third-party testing services. PSL spheres are listed as suitable test materials when using particle counters by both the Institute of Environmental Sciences (IEST) and European Norm (EN) standards. HEPA CHECK Filter Challenge Particles are polystyrene latex particles optimized for performance, aerosolization, safety and economy for both HEPA and ULPA filter testing. Unlike traditional oil-based filter test materials such as DOP, called dioctyl phthalate, the HEPA-CHECK PSL spheres do not have carcinogenic health risks associated with atomized oils such as dioctyl phthalate or other oil-based filter test materials. Due to the clean, oil-free nature of this ultra-pure water suspension, HEPA-CHECK is ideal for leak testing in-situ filters where the highest degree of cleanliness is required. Our polystyrene microspheres, for HEPA and ULPA filter testing, are manufactured with a consistent, repeatable supply of highly uniform, monodisperse PSL particles that meet or exceed efficiency filter test requirements.

Each 25 mL bottle is to be diluted in one US gallon (3.79 liters) of clean water and then nebulized. Nebulizing can be accomplished by using commercially available ultrasonic PSL Generators, such as a High Output PSL Generator. Single use bottles ensure reproducible test conditions from site to site. The product is available in particle sizes from 0.12um to 0.3um, sizes normally associated with testing mean particle penetration size, MPPS, and is sold individually or in convenient packs of 6 or 20 bottles.

Particle CompositionPolystyrene Latex Particles, PSL Spheres
Particle Density1.05 g/cm³
Index of Refraction1.59 @ 589nm (25°C)
Particle Concentration7.5 x 1012 /mL
Fill Volume:25 mL
ContentPolystyrene microspheres in Dionized water
AdditivesTrace amounts of surfactant to inhibit agglomeration and promote stability
Expiration Date≤ 24 months
Suggested Storage2-8°C
Bottle Size and VolumeA: 25ml, 1 Bottle (Off the Shelf), B: 25ml, 6 Bottles (Off the Shelf) C: 25ml, 24 Bottles

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PSL Spheres, HEPA-Check Filter Challenge Particles, HEPA & ULPA Filters
 Product#

 Volume

 Mean Diameter

 Size Uniformity

 Bottle Quantity

Particle Concentration

 APHF12 

 25ml

 0.12 μm

 ≤ 5%

1

7.5 x10 e12

 APHF12-PK 

 6x25ml

 0.12 μm

 ≤ 5%

6

7.5 x10 e12

 APHF12-BX 

 20x25ml

 0.12 μm

 ≤ 5%

20

7.5 x10 e12

 APHF14 

 25ml

 0.14 μm

 ≤ 5%

1

7.5 x10 e12

 APHF14-PK 

 6x25ml

 0.14 μm

 ≤ 5%

6

7.5 x10 e12

 APHF14-BX 

 20x25ml

 0.14 μm

 ≤ 5%

20

7.5 x10 e12

 APHF17 

 25ml

 0.17 μm

 ≤ 5%

1

7.5 x10 e12

 APHF17-PK 

 6x25ml

 0.17 μm

 ≤ 5%

6

7.5 x10 e12

 APHF17-BX 

 20x25ml

 0.17 μm

 ≤ 5%

20

7.5 x10 e12

 APHF20 

 25ml

 0.20 μm

 ≤ 5%

1

7.5 x10 e12

 APHF20-PK 

 6x25ml

 0.20 μm

 ≤ 5%

6

7.5 x10 e12

 APHF20-BX 

 20x25ml

 0.20 μm

 ≤ 5%

20

7.5 x10 e12

 APHF22 

 25ml

 0.22 μm

 ≤ 5%

1

7.5 x10 e12

 APHF22-PK 

 6x25ml

 0.22 μm

 ≤ 5%

6

7.5 x10 e12

 APHF22-BX 

 20x25ml

 0.22 μm

 ≤ 5%

20

7.5 x10 e12

 APHF26 

 25ml

 0.26 μm

 ≤ 5%

1

7.5 x10 e12

 APHF26-PK 

 6x25ml

 0.26 μm

 ≤ 5%

6

7.5 x10 e12

 APHF26-BX 

 20x25ml

 0.26 μm

 ≤ 5%

20

7.5 x10 e12

 APHF30 

 25ml

 0.30 μm

 ≤ 5%

1

7.5 x10 e12

 APHF30-PK 

 6x25ml

 0.30 μm

 ≤ 5%

6

7.5 x10 e12

 APHF30-BX 

 20x25ml

 0.30 μm

 ≤ 5%

20

7.5 x10 e12

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