Bladewerx Speclon™ Filters

PTFE Membrane Filters

Features

• PTFE-membrane (Polyester-backed)

• Greatly reduces background from radon
  progeny for alpha spectroscopy

• Available in a variety of diameters

• Low pressure drop for flow rates up to 2
  CFM

• Durable polyester backing will not tear or
  break

• Conveniently packaged in boxes of 100
  filters

• Custom sizes and shapes

• Better CAM Sensitivity

• Lower False Alarms

• Faster Alarm Response Times

Introduction

Bladewerx SpeclonTM PTFE-membrane filter media is recognized for its superior surface deposition characteristic, resulting in sharper energy resolution for alpha spectroscopy applications. Whether the application is continuous air monitoring, or personal/fixed air samplers with retrospective analysis, Bladewerx Speclon filters can provide a cost-effective alternative to glass fiber, cellulose, or acetate filters.

In alpha air monitoring for plutonium or transuranics, improved energy resolution means reduced background from interfering radon decay peaks. In many facilities, alpha air quality is determined retrospectively by gross counting after radon daughters have been decayed. By switching to Speclon filters, samples can be counted immediately using alpha spectroscopy, without waiting for radon products to decay, thereby improving worker safety.

High sensitivity alpha-in-air spectroscopy is dependent on spectrum resolution. Because of the excellent surface deposition qualities of the PTFE membrane filter, the full-width half-max (FWHM) alpha radiation peak resolution is significantly improved over glass fiber, cellulose or acetate filter media.  As a result of using the PTFE membrane filters in an alpha radiation CAM, the minimum detectable concentration can be improved by as much as 30% and allow either faster alarm response times or reduced false alarms.

Bladewerx offers Speclon PTFE membrane filters in a variety of sizes or shapes. Contact us by phone at: (865) 947-5123 or by email at: sales@deqtech.com for an estimate on unlisted diameters or pore sizes. 

Specifications

PART NUMBERS:

• Speclon 5.0, 37 mm diameter, 5 µm pore, box 100: BSP-FILT-50B037

• Speclon 5.0, 47 mm diameter, 5 µm pore, box 100: BSP-FILT-50B047

• Speclon 1.5, 33.5 mm diameter, 1.5 µm pore, box 100: BSP-FILT-15B034

• Speclon 1.5, 37 mm diameter, 1.5 µm pore, box 100: BSP-FILT-15B037

• Other diameters and pore sizes available

Speclon 1.5

• Pore Size: 1.5 μm

• Air Flow @ 0.7 bar: 30 LPM/cm²

• Thickness: 10 Mils

• Backing: Polypropylene

Speclon 5.0

• Pore Size: 5.0 μm

• Air Flow @ 0.7 bar: 120 LPM/cm²

• Thickness: 12 Mils

• Backing: Polypropylene

Technical Information

• Speclon™ Filter Data Sheet

• Aerosol Collection Efficiency Measurements of the Speclon™ Filters

• Evaluation of Filter Media for Alpha Continuous Air Monitoring in the Ultrafine Particle Size Range Paper

• Evaluation of Filter Media for Alpha Continuous Air Monitoring in the Ultrafine Particle Size Range Presentation from July 15, 2009 Health Physics Society Meeting

Other Bladewerx Products

• SabreAlert2 Alpha Radiation Air Monitor

• SabreBZM Alpha Radiation Breathing Zone Monitor

• SabreASC Alpha Radiation Sample Counter

• SabrePSC Portable Alpha Radiation Sample Counter

• SabreBPM Beta Radiation Particulate Air Monitor