WP-CR-001-A “PPE Requirement for PAO-4 During Filter Leakage Testing”

Personal Protective Equipment (PPE) Requirement for PAO-4 During Filter Leakage Testing When the PAO-4 Safety Data Sheet was updated to align with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), PAO-4 became classified as an Aspiration Hazard under A.10 Aspiration Hazard in OSHA’s Hazard Communication Standard updated March, 2012. According the GHS...

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AN-FT-007-A “Aerosol Correction Factors”

Corrections Factors for Filter Leakage Testing using an Aerosol photometer and Laskin nozzle generator. In general usage, a Laskin nozzle type III-A generator requires no pressure adjustment to obtain valid results, provided the following conditions are met: the aerosol photometer in use has internal reference settings for the chosen aerosol reagent allowing the upstream aerosol...

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AN-FT-004-A “Determination of Appropriate TDA-100P Cycle Time”

  Introduction The two primary factors effecting throughput are the values used for the Load and Sample time variables.  Open time can normally be set to zero and is not an issue in most applications.  The required Load and Sample time are a function of sample flow rate, test fixture volume and the characteristics of the...

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AN-FT-006-A “TDA-100P RS-232 Serial Data Output”

Relevant Equipment:   Revision 1.17 & higher ‘C’ compiled TDA-100P Operating Firmware Detailed examples of the available serial output strings for the TDA-100P:  Trace level setting versus data output content.    Passing Test TLEVEL (trace level) effect on serial output with “Passing” result. Load time=8 seconds, Ext Load =12 seconds, Sample time =1 second TLEVEL=0,...

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AN-PH-002-A “Forward Light Scattering Linearity & Repeatability”

Introduction To date, no recognized national metrological institute has successfully devised a method of calibrating a forward light scattering photometer.  This is primarily due to the difficulty in generating a stable and repeatable aerosol that is capable of providing input at the lowest ranges of photometric detection. Currently available calibrated aerosol sources are limited to...

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AN-CR-003-A “PAO-4 GHS Aspiration Hazard Clarification”

Introduction When the ATI PAO-4 Safety Data Sheet, PN 1800101, was updated to align with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), it became classified as an Aspiration Hazard under A.10 Aspiration Hazard in OSHA’s Hazard Communication Standard updated March, 2012. Per the GHS classification requirements, ATI PAO-4 is an Aspiration...

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U.S. Government Study, Implementing Best Practices in BioSafety/BioSecurity

Following a memorandum issued from the White house this week, the Cleanroom Contamination Control Industry is preparing for an increase in focus on the biosafety and biosecurity infrastructure in the United States. The memorandum, issued by Lisa Monaco, Assistant to the President for Homeland Security and Counterterrorism and Deputy National Security Advisor, and Dr. John...

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