Patent SG-11201803587U-A (SG)
Title: Enhanced stability filter integrity test
Inventor: GIGLIA SALVATORE
IPC: G01N15/08
Filed: 2016-09-12
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 26 May 2017(26.05.2017) WIPOIPCT (10) International Publication Number WO 2017/087057 A1 (51) International Patent Classification: G01N15/08 (2006.01) B01D 65/10 (2006.01) (21) International Application Number: PCT/US2016/051268 (22) International Filing Date: (25) Filing Language: (26) Publication Language 12 September 2016 (12.09.2016) English English (30) Priority Data: 62/257,830 20 November 2015 (20.11.2015) US (71) Applicant: EMD MILLIPORE CORPORATION [US/US]; 290 Concord Road, Billerica, Massachusetts 01821 (US). (72) Inventors: GIGLIA, Salvatore; c/o EMD Millipore Cor­ poration, 290 Concord Road, Billerica, Massachusetts 01821 (US). NHIEM, David; c/o EMD Millipore Corpor­ ation, 290 Concord Road, Billerica, Massachusetts 01821 (US). (74) Agents: LEMACK, Kevin S. et al.; Nields, Lemack & Frame, LLC, 176 E. Main Street, Suite 5, Westboro, Mas­ sachusetts 01581 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) (54) Title: ENHANCED STABILITY FILTER INTEGRITY TEST i> i> oo i> CJ o PRESSURE VALVE F) FLOW METER COMPRESSED 13 TRANSDUCER . <R PRESSURE REGULATOR 19 1 PRESSURE POT FILLED WITH WATER HUMID AIR 15 PRESSURE TRANSDUCER OXYGEN ANALYZER FLOW METER f) DESICCANT FIG. 3 (57) : A method of integrity testing porous materials that is non-destructive to the material being tested. The method in­ cludes humidifying the inlet gas stream to minimize or prevent the porous material from drying out. The inlet gas stream includes at least two gases, wherein one of the gases has a different permeability in liquid than the other, such as oxygen and nitrogen. The per­ meate gas stream may be subjected to a driving force such as reduced pressure to increase the flow of gases and reduce test time. Multiple porous materials can be integrity tested at the same time, such as by manifolding a plurality of them together. The integrity test is capable of detecting the presence of oversized pores or defects that can compromise the retention capability of the porous ma­ terial.