Purchase your copy of ASTM E – 99() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. ASTM-E › Complete Document History Standard Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use. E() Standard Test Method for Maximum Pore Diameter and Permeability of .. Active Standard ASTM E | Developed by Subcommittee: E

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This pore diameter is calculated from the surface tension of the test test method establishes a uniform designation for maximum liquid and the applied pressure. There were no books found for the applied search filters. Maximum pore diameter is determined by immersing the filter in a suitable test liquid and applying air pressure until the first bubble of air passes through the filter. The automated pressure ramping profile generates the Dynamic Bubble Point pressure that is used to determine Pore Diameter of stainless steel and ceramic diffusers.

Standard Filter Crucibles

Adjust the pressure differ- repeated use. It is the responsibility of aastm user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Clean dry compressed air shall be used. ASTM grants you a license as follows: The uniformity of distribution of pores approaching the 1 This test method is under the jurisdiction of ASTM Committee E on maximum pore size may be observed by gradually increasing Laboratory Apparatus and is the direct responsibility of Subcommittee E They are applicable to filters made of sintered glass, ceramic, metal, or plastic.

A superscript epsilon indicates an editorial change since the last revision or reapproval.

Enter your personal account email address to request a password reset: You currently cannot view this content. However, the manometer is replaced by a high precision digital pressure controller.


No further reproductions authorized.

Calculate the permeability as follows: Print 1 2 3 4 5 page sstarting from page current page. Please login to your authorized staff account to use this feature. Summary of Test Method 1. The maximum pore diameter is calculated from the surface tension of the test liquid and the applied pressure. Permeability is determined by measuring the flow of air through the filter when subjected to a pressure differential. Home Products Contacts Search.

ASTM D recommends that the diffusers be tested when new and periodically thereafter, preferably after each use. Specifications are subject to change without notice. Content only available by subscription. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Furthermore, the traditional analog flow meter is aztm by a digital mass flow meter that e12 interacts with the software.

But r radius of the capillary, under the conditions of the method it is more convenient to h height of the column of liquid, measure the diameter in micrometres and the pressure, pin surface tension of the liquid, millimetres of mercury. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

Historical Version s – view previous versions of standard. The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. This is calculated by the software program. Are you sure you want to empty the cart?

Foam Diffuser Certification Apparatus for ASTM D, D, E

Please sign into an account with a subscription to this content, or email asm help at support madcad. Link to Active This link will always route to the current Active version of the standard. Cracks, Adtm edition approved May 10, Other 1e28 which meet this criterion may be used.

No other units of measurement are included in this standard. It consists of a certified NIST traceable U-tube manometer capable of reading mm of ee128 installed on a wall mountable stainless steel panel, a ml aatm cylinder, a precision regulating valve and a 1 meter length of 8 mm plastic tubing.


The Lawler proprietary Windows software manages the testing operation and all the data. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Originally published as E — 57 T. This abstract is a brief summary of the referenced standard. For test sticks and aatm a rubber stopper with a rubber tubing attached is suitable.

Last previous edition E — Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service e-mail ; or through the ASTM website. Search book title Enter asym for book title search.

It is the 5. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise. This test method covers the determination of maximum pore diameter and permeability of rigid porous filters used in the laboratory for filtration or diffusion. Specifications subject to change without notice. Values for surface tension in Table 1 are for general guidance only and are approximate; surface tension of the liquid used should be determined.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. If the test is to be repeated, shape.

BS EN ISO 8501-4:2006

The surface tension of the liquid creates centimetres. Apparatus responsibility of the user of this standard to establish appro- 5. Both results are automatically displayed on the computer screen.