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IEST-RP-CC001: A Comprehensive Guide to HEPA and ULPA Filters


What is Iest Rp Cc001?




If you are looking for a reliable and authoritative source of information on HEPA (high efficiency particulate air) and ULPA (ultra-low penetration air) filters, you may want to download Iest Rp Cc001 Pdf. This is a recommended practice (RP) document that covers basic provisions for these types of filter units as a basis for agreement between customers and suppliers. It was first published in 1986 by the Institute of Environmental Sciences and Technology (IEST), an international organization that develops standards and best practices for contamination control, nanotechnology, environmental testing, product reliability and aerospace. Since then, it has been revised regularly to keep it relevant to current industry practice. It was also one of the first RPs from IEST to be considered as a Canadian standard.




Iest Rp Cc001 Pdf Downloadl



In this article, we will explain what Iest Rp Cc001 is, why it is important, how it classifies and tests HEPA and ULPA filters, how to download it, how to use it, what are its challenges and limitations, and what are its future trends and developments. By the end of this article, you will have a comprehensive understanding of this essential document for anyone who deals with high-efficiency filters.


Why are HEPA and ULPA filters important?




HEPA and ULPA filters are important because they are capable of removing very small particles from the air that can pose health or quality risks. These particles can include dust, pollen, mold spores, bacteria, viruses, smoke, aerosols, asbestos fibers, radioactive particles, nanoparticles and more. HEPA filters can capture at least 99.97% of particles that have a size of 0.3 micrometers (μm) or larger. ULPA filters can capture at least 99.999% of particles that have a size of 0.12 μm or larger. These filters are suitable for use in clean air devices and cleanrooms that fall within the scope of ISO 14644, an international standard that specifies the classification of air cleanliness in terms of particle concentration. They are also suitable for use in supply air and contaminated exhaust systems that require extremely high filter efficiency for submicrometer particles.


HEPA and ULPA filters are widely used in various industries and applications that require a high level of air purity and protection, such as:


  • Pharmaceutical and biotechnology production



  • Medical and health care facilities



  • Laboratories and research centers



  • Nuclear power plants and waste management



  • Semiconductor and microelectronics manufacturing



  • Aerospace and defense engineering



  • Food and beverage processing



  • Museums and archives



  • Commercial and residential buildings



By using HEPA and ULPA filters, these industries and applications can ensure that their products, processes, equipment, personnel, customers and environment are safe from harmful or unwanted particles.


How are HEPA and ULPA filters classified?




Iest Rp Cc001 provides a systematic way of classifying HEPA and ULPA filters based on their performance and construction. It describes 11 levels of filter performance, or types, and five grades of filter construction. The types are designated by letters from A to L, excluding I. The grades are designated by numbers from 1 to 5. The table below summarizes the main characteristics of each type and grade.



TypeEfficiency (%)Resistance (mm H2O)Scan Test Required?


A>=99.97 @ 0.3 μmNo


B>=99.97 @ 0.3 μmNo


C>=99.97 @ 0.3 μmYes


D>=99.97 @ 0.3 μmYes


E>=99.999 @ 0.12 μmNo


F>=99.999 @ 0.12 μmNo


G>=99.999 @ 0.12 μmYes


H>=99.999 @ 0.12 μmYes


J>=99.9999 @ 0.12 μmN/A @ N/A cm/s*No


K>=99.9999 @ 0.12 μm N/A @ N/A cm/s* Yes


L >=99.99999 @ 0.12 μm N/A @ N/A cm/s* Yes Grade Construction Requirements 1 Wooden frame, no gasket, no handle, no label 2 Wooden frame, gasket on one side, no handle, label on gasket side 3 Metal frame, gasket on one side, handle on opposite side, label on gasket side 4 on both sides, label on handle side


5Metal frame, gasket on both sides, handle on both sides, label on both sides


* For types J, K and L, the resistance and face velocity are not specified because they depend on the filter media and configuration. The customer should specify these parameters according to their application.


For types J, K and L, the scan test is not required for flat sheet media filters, but it is required for pleated media filters.


The customer's purchase order should specify the type and grade of the filter required. The customer should also specify the filter efficiency required if it is not covered by the performance levels specified in this RP.


How are HEPA and ULPA filters tested?




Iest Rp Cc001 also provides a detailed description of the methods and instruments for testing HEPA and ULPA filters. The tests include measuring filter efficiency, resistance, leakage and integrity. The tests are performed under controlled conditions using standardized procedures and equipment. The tests are intended to verify that the filters meet the specifications and requirements of the customer and the RP.


The filter efficiency test measures the percentage of particles that are captured by the filter at a given particle size and face velocity. The test uses a calibrated aerosol generator to produce a challenge aerosol of known particle size distribution and concentration. The test also uses a calibrated aerosol photometer to measure the upstream and downstream concentrations of the challenge aerosol. The filter efficiency is calculated by dividing the difference between the upstream and downstream concentrations by the upstream concentration and multiplying by 100. The test can be performed using either a liquid or a solid aerosol. The liquid aerosol is usually a solution of dioctyl phthalate (DOP) or polyalphaolefin (PAO) in isopropyl alcohol (IPA). The solid aerosol is usually sodium chloride (NaCl) or potassium chloride (KCl). The test can be performed using either a discrete particle counter (DPC) or an optical particle counter (OPC) instead of an aerosol photometer, but this requires additional calculations and corrections.


The filter resistance test measures the pressure drop across the filter at a given face velocity. The test uses a calibrated manometer or differential pressure gauge to measure the upstream and downstream pressures of the air flow through the filter. The filter resistance is calculated by subtracting the downstream pressure from the upstream pressure. The test can be performed using either a constant volume or a constant pressure method.


The filter leakage test measures the amount of particles that pass through defects or holes in the filter media or sealant. The test uses a calibrated aerosol generator to produce a challenge aerosol of known particle size distribution and concentration. The test also uses a calibrated aerosol photometer to scan the entire filter surface for any local increases in downstream concentration that indicate leakage. The test can be performed using either a liquid or a solid aerosol, as described above.


The filter integrity test measures the ability of the filter to withstand mechanical stress without compromising its performance. The test applies a specified positive or negative pressure to the filter and checks for any changes in efficiency, resistance or leakage. The test can be performed using either an in-situ or an off-line method.


How to download Iest Rp Cc001 Pdf?




If you want to download Iest Rp Cc001 Pdf, you have several options to choose from. You can obtain the latest version of the recommended practice document from different sources, such as:


Iest official website




The most direct and reliable way to download Iest Rp Cc001 Pdf is to purchase it from Iest's official website. You can find it under Standards & RPs > Recommended Practices > IEST-RP-CC001: HEPA and ULPA Filters. You can buy it as a digital download or as a printed copy. The digital download costs $125 for non-members and $75 for members. The printed copy costs $150 for non-members and $90 for members. You can also buy it as part of a package that includes other related RPs, such as IEST-RP-CC007: Testing ULPA Filters and IEST-RP-CC034: HEPA and ULPA Filter Leak Tests. To purchase it from Iest's website, you need to create an account, add the item to your cart, and complete the checkout process. You will receive an email with a link to download the document or a confirmation of your order for the printed copy.


GlobalSpec website




Another option to download Iest Rp Cc001 Pdf is to access it from GlobalSpec's website. GlobalSpec is a leading provider of engineering information and tools that connects industrial buyers and suppliers. You can find Iest Rp Cc001 under Standards Library > Standards Detail > Institute of Environmental Sciences and Technology > IEST-RP-CC001. You can view the document online or download it as a PDF file. To access it from GlobalSpec's website, you need to register for a free account, provide some basic information, and agree to their terms and conditions. You will receive an email with a link to activate your account and access the document.


Semiconductor Digest website




A third option to download Iest Rp Cc001 Pdf is to read it from Semiconductor Digest's website. Semiconductor Digest is a leading online publication that covers the latest news, trends and technologies in the semiconductor industry. You can find Iest Rp Cc001 under News > Standards > IEST-RP-CC001.4: HEPA and ULPA filters. You can read the document online or download it as a PDF file. To read it from Semiconductor Digest's website, you do not need to register or provide any information. You can simply click on the link and access the document.


How to use Iest Rp Cc001 Pdf?




Once you have downloaded Iest Rp Cc001 Pdf, you can use it as a reference guide for selecting, installing, maintaining and replacing HEPA and ULPA filters. The document provides useful tips and best practices for applying the recommended practice to different filter configurations, applications and environments. Here are some examples of how to use Iest Rp Cc001 Pdf:


  • When selecting a filter, you should consider the type and grade of the filter, the filter efficiency required, the filter resistance acceptable, the filter size and shape suitable, and the filter media and construction compatible with your application.



  • When installing a filter, you should follow the manufacturer's instructions, ensure proper alignment and sealing of the filter, avoid damaging or contaminating the filter, perform a pre-installation test if required, and record the installation date and details.



  • When maintaining a filter, you should inspect the filter regularly for any signs of deterioration or damage, monitor the filter performance using appropriate instruments, clean or replace the filter when necessary, perform a post-maintenance test if required, and record the maintenance date and details.



  • When replacing a filter, you should follow the manufacturer's instructions, dispose of the old filter safely and properly, install the new filter correctly, perform a post-replacement test if required, and record the replacement date and details.



By using Iest Rp Cc001 Pdf, you can ensure that your HEPA and ULPA filters meet the specifications and requirements of your application and that they provide optimal performance and protection.


What are the challenges and limitations of Iest Rp Cc001?




Iest Rp Cc001 is a valuable document that provides comprehensive information on HEPA and ULPA filters. However, it is not without its challenges and limitations. Some of the potential issues and drawbacks of using Iest Rp Cc001 are:


  • The document may not cover all types of filters or applications that exist or may emerge in the future. For example, it does not specify resistance or face velocity for types J, K and L filters because they depend on the filter media and configuration. It also does not apply to non-rectangular filters that cannot be scanned easily.



  • The document may not reflect the latest developments or innovations in filter technology or testing methods. For example, it does not include new types of aerosol generators or particle counters that may offer better accuracy or efficiency than those currently recommended.



  • The document may not be consistent with other standards or regulations that apply to HEPA and ULPA filters in different countries or regions. For example, it may differ from ISO 29463 or EN 1822 standards that are widely used in Europe.



  • The document may not be accessible or affordable for everyone who needs it. For example, it may require registration or payment to download it from certain sources. It may also be difficult to find or obtain in some languages or formats.



necessary or appropriate.


What are the future trends and developments of Iest Rp Cc001?




Iest Rp Cc001 is not a static document that remains unchanged over time. It is a dynamic document that evolves and improves with the feedback and input of its users and experts. The latest revision of Iest Rp Cc001, which is IEST-RP-CC001.7, was published in 2016. It includes some new and improved features that reflect the current state of the art and practice of HEPA and ULPA filters. Some of these features are:


An alternate filter classification scheme




The document includes an appendix with a draft of an alternate filter classification scheme that relates classes to filter efficiency consistently instead of the nonsequential letter types. This new scheme uses numbers from 1 to 11 to designate the classes, where class 1 corresponds to type A, class 2 corresponds to type B, and so on. The new scheme also uses letters from A to E to designate the grades, where grade A corresponds to grade 1, grade B corresponds to grade 2, and so on. The new scheme is intended to simplify and clarify the filter classification system and make it more compatible with other standards. This being a new proposed scheme, it is included in an appendix for user comments and suggestions and may be considered as a recommended filter class in a future revision.


Guidelines for testing filter sizes with high aspect ratio




The document also includes an appendix that provides guidelines for system qualification for testing filter sizes with high aspect ratio, i.e., narrow and long. This is based on work done at NASA to test the filters used on the International Space Station. The appendix describes the criteria and procedures for determining the minimum number of sampling points, the minimum sampling time, and the maximum allowable leakage for testing these filters. The appendix also provides examples of calculations and graphs to illustrate the application of the guidelines. These guidelines are intended to help users test filters that have unconventional shapes and dimensions that may not be covered by the standard methods.


A low output thermal aerosol generator for testing filters




The document also includes an appendix that describes the operation and results of a low output thermal aerosol generator for testing filters. This is a new type of aerosol generator that produces a challenge aerosol by heating a liquid solution of DOP or PAO in IPA. The generator has a low output rate of about 0.5 mg/min, which reduces the amount of liquid required and minimizes the risk of condensation or coagulation. The generator also has a low power consumption of about 10 W, which makes it suitable for portable or battery-operated applications. The appendix presents data on the particle size distribution, concentration, stability and uniformity of the aerosol produced by the generator. It also compares the results with those obtained using a conventional Laskin nozzle generator. Based on feedback from users, this generator may be included as a recommended generator in future revisions of the RP.


Conclusion




Iest Rp Cc001 Pdf is a comprehensive and authoritative document that provides essential information on HEPA and ULPA filters. It covers basic provisions for filter units as a basis for agreement between customers and suppliers. It describes 11 levels of filter performance and five grades of filter construction. It also describes methods and instruments for testing filter efficiency, resistance, leakage and integrity. It provides tips and best practices for selecting, installing, maintaining and replacing filters. It also addresses some challenges and limitations of using the RP for different filter configurations, applications and environments. It also includes some new and improved features that reflect the current state of the art and practice of filter technology.


If you are interested in downloading Iest Rp Cc001 Pdf, you can obtain it from different sources, such as Iest's official website, GlobalSpec's website or Semiconductor Digest's website. You can view it online or download it as a PDF file. You can use it as a reference guide for your HEPA and ULPA filter needs.


We hope this article has helped you understand what Iest Rp Cc001 Pdf is, why it is important, how it classifies and tests HEPA and ULPA filters, how to download it, how to use it, what are its challenges and limitations, and what are its future trends and developments. If you have any questions or comments about this article or Iest Rp Cc001 Pdf, please feel free to contact us or leave a comment below. We would love to hear from you.


FAQs




Here are some frequently asked questions and answers about Iest Rp Cc001 Pdf:


  • What is the difference between HEPA and ULPA filters?



  • HEPA filters are high efficiency particulate air filters that can capture at least 99.97% of particles that have a size of 0.3 μm or larger. ULPA filters are ultra-low penetration air filters that can capture at least 99.999% of particles that have a size of 0.12 μm or larger.



  • What is the difference between filter types and filter grades?



  • Filter types are levels of filter performance that specify the filter efficiency, resistance and scan test requirements. Filter grades are levels of filter construction that specify the filter frame, gasket, handle and label requirements.



  • What is the difference between liquid and solid aerosols?



  • Liquid aerosols are droplets of liquid suspended in air. Solid aerosols are solid particles suspended in air. Liquid aerosols are usually produced by atomizing a solution of DOP or PAO in IPA. Solid aerosols are usually produced by nebulizing a solution of NaCl or KCl.



  • What is the difference between DPC and OPC?



DPC is discrete particle counter, which is an instrument that counts and sizes individual particles in an ae


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