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HEPA-Check Filter Challenge Particles
 
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  HEPA-Check Filter Challenge Particles


There is a worldwide growing demand for polystyrene latex* particles (PSL) by filter manufacturers, end-users and third-party testing services. PSL's are listed as suitable test materials when using particle counters by both the Institute of Environmental Sciences (IEST) and European Norm (EN) standards.

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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 dioctylphthalate (DOP), HEPA-CHECK does not carry the health risks associated with atomized oils such as dioctylphthalate (DOP) 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 so you are ensured a consistently controllable and repeatable supply of highly uniform, monodisperse particles which meet or exceed efficiency testing 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 humidifiers. Single use bottles ensure reproducible test conditions from site to site. The product is available in particle sizes traditionally associated with testing and is sold individually or in convenient packs of 6 or 20 bottles.

*Latex is a general term for a suspension of plastic particles in water
 HEPA-Check Filter Challenge Particles
 Product# Price  Mean
Diameter		  Size
Uniformity		  Quantity  
           
 HF12      -    0.12 μm ≤ 5% 1 bottle   SELECT  
 HF12-PK      -    0.12 μm ≤ 5% 6 bottles   SELECT  
 HF12-BX      -    0.12 μm ≤ 5% 20 bottles   SELECT  
 HF14      -    0.14 μm ≤ 5% 1 bottle   SELECT  
 HF14-PK      -    0.14 μm ≤ 5% 6 bottles   SELECT  
 HF14-BX      -    0.14 μm ≤ 5% 20 bottles   SELECT  
 HF17      -    0.17 μm ≤ 5% 1 bottle   SELECT  
 HF17-PK      -    0.17 μm ≤ 5% 6 bottles   SELECT  
 HF17-BX      -    0.17 μm ≤ 5% 20 bottles   SELECT  
 HF20      -    0.20 μm ≤ 5% 1 bottle   SELECT  
 HF20-PK      -    0.20 μm ≤ 5% 6 bottles   SELECT  
 HF20-BX      -    0.20 μm ≤ 5% 20 bottles   SELECT  
 HF22      -    0.22 μm ≤ 5% 1 bottle   SELECT  
 HF22-PK      -    0.22 μm ≤ 5% 6 bottles   SELECT  
 HF22-BX      -    0.22 μm ≤ 5% 20 bottles   SELECT  
 HF26      -    0.26 μm ≤ 5% 1 bottle   SELECT  
 HF26-PK      -    0.26 μm ≤ 5% 6 bottles   SELECT  
 HF26-BX      -    0.26 μm ≤ 5% 20 bottles   SELECT  
 HF30      -    0.30 μm ≤ 5% 1 bottle   SELECT  
 HF30-PK      -    0.30 μm ≤ 5% 6 bottles   SELECT  
 HF30-BX      -    0.30 μm ≤ 5% 20 bottles   SELECT  
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Specifications:
Particle Composition :Polystyrene (PS)
Particle Density :1.05 g/cm³
Index of Refraction :1.59 @ 589nm (25°C)
Particle Concentration :7.5 x 1012 #/mL
Fill Volume :25 mL
Content :Polystyrene microspheres in water
Additives :Trace amounts of surfactant to inhibit agglomeration and promote stability
Expiration Date :≥ 24 months
Package Includes :Material Safety Data Sheet (MSDS),
Prouduct Insert Sheet
Storage & Handling :Refrigerate when not in use, do not freeze. Store upright and keep bottle tightly sealed.