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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Keywords p observed pressure of water, cm water Note 6. The electronic file may not be reproduced in any way. Maximum pore diameter is determined by astn the filter in a suitable test liquid and applying air pressure until the first bubble of air passes through the filter.

If the test is to be repeated, shape. Clean dry compressed air shall be used. Work Item s – proposed revisions of this standard.

ASTM E – pdf全文-调研报告-在线文档

The Lawler proprietary Asmt software manages the testing operation and all the data. Other liquids which meet this criterion may be used. Values for surface tension in Table 1 are for general guidance only and are approximate; surface tension of the liquid used should be determined. Please login to your authorized staff account to use this feature. Print 1 2 3 4 5 page sstarting from page current page.

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.

1e28 D recommends that the diffusers be tested when new and periodically thereafter, preferably after each use.

They are applicable to filters made of sintered glass, ceramic, metal, or plastic. Link to Active This link will always route to the current Active version of the standard. Please sign into an account with a subscription to this content, ashm email for help at support madcad.


Furthermore, the traditional analog flow meter is replaced by a digital mass flow meter that directly interacts with the software. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise.

Standard Filter Crucibles – ROBU® Glasfilter-Geräte GmbH

ASTM D requires the recertification of the diffuser after 10 foam tests. Model FMD eliminates the need for the clumsy and difficult to use wet test meter.

Specifications subject to change without notice. Making these substitutions, the expres- d density, sion becomes: Last previous edition E — The surface tension of the liquid creates centimetres. For test sticks and candles a rubber stopper with a rubber tubing attached is suitable.

It is the 5. This is calculated by the software program. Register for a trial account.

BS EN ISO 8501-4:2006

This test method covers the determination of maximum pore diameter and permeability of rigid porous filters used in the laboratory for filtration or diffusion. Apparatus that has been found satisfactory is illustrated in Fig.

However, the manometer is replaced by a high precision digital pressure controller. If you like to setup a quick demo, let us know at support madcad. Calculate the permeability as follows: No items in cart. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Specifications are subject to change without notice. There were no books found for the applied search filters. Astmm automated pressure ramping profile generates the Dynamic Bubble Point pressure that is used to determine Pore Diameter of stainless steel and ceramic diffusers.

SSPC-VIS 5 | Steel Surfaces Prepared By Wet Abrasive

A number in parentheses indicates the year of last reapproval. Home Products Contacts Search. 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.


The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. Search book title Enter keywords for book title search. This abstract is a brief summary of the referenced standard.

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. This test method establishes a uniform designation for maximum pore diameter and also provides a means of detecting and measuring changes which occur through continued use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. It consists of a certified NIST traceable U-tube manometer capable of reading mm of water installed on a wall mountable stainless steel panel, a ml graduated cylinder, a precision regulating valve and a 1 meter length aetm 8 mm plastic tubing.

Enter your personal account email address to request a password reset: A superscript epsilon indicates an editorial change since the last revision or reapproval. Both results are automatically displayed on the computer screen.

Adjust the pressure differ- repeated use. No further reproductions authorized.