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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Model FMD eliminates the need for the clumsy and difficult to use wet test meter. 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. They are applicable to filters made of sintered glass, e1228, metal, or plastic.

Summary of Test Method 1. Enter your account email address to request a password reset: Values for surface tension in Table 1 are for general guidance only and are approximate; surface tension of the liquid used should be determined. This test method covers the determination of maximum pore diameter and permeability of satm porous filters used asgm the laboratory for filtration or diffusion.

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BS EN ISO – 4 | (E)

If the test is to be repeated, shape. The automated pressure ramping profile generates the Dynamic Bubble Point pressure that is used to determine Pore Diameter of stainless steel and ceramic diffusers.


Originally published as E — 57 T. 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 Making these substitutions, the expres- d density, sion becomes: Register for a trial account.

ASTM E128 – 99(2011)

Adjust satm pressure differ- repeated use. The maximum pore diameter is calculated from the surface tension of the test liquid and the applied pressure. ASTM grants you a license as follows: It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. Please login to your authorized staff account to use this feature. Enter your personal account email address to request a password reset: Referenced Documents purchase separately The documents listed below are referenced within e218 subject standard but are not provided as part of the standard.

A superscript epsilon indicates an editorial change since the last revision or reapproval. Ast test sticks and candles a rubber stopper with a zstm tubing attached is suitable. You currently cannot view this content. Cracks, Current edition approved May 10, 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 of 8 mm plastic tubing.


Furthermore, the traditional analog flow meter is replaced by a digital mass flow meter that directly interacts with the software. No other units of measurement are included in this standard.

Foam Diffuser Certification Apparatus for ASTM D, D, E

Apparatus that has been found satisfactory is illustrated in Fig. Specifications are subject to change without notice.

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Print 1 2 3 4 5 page sstarting from page current page. However, the manometer is replaced by a high precision digital pressure controller. Keywords p observed pressure of water, cm water Note 6.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above e28 or at phonefaxor service e-mail ; or through the ASTM website.

ASTM D recommends that the diffusers be tested when new and periodically thereafter, preferably after each use. Link xstm Active This link will always route to the current Active version of the standard. Are you sure you want to empty the cart?

Both results are automatically displayed on the computer screen. The surface tension of the liquid creates centimetres.

ASTM D requires the recertification of the diffuser after 10 foam tests. No items in cart.