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4.1.1 Zero-tleadapaee lxtraeeion vessel (see Fiture ]) then ohs <br />sasple is beint evaluated for volatilea, the zero-headapue exnsutioa <br />vessel is wod !er !lltration. Tha davits shall be capable of suppertint <br />and keeping !s place the Jibes lilter, and be able to richacand the <br />pressure needed to aeeospliah separation (SO psi). <br />~: tfien it Ls swpected that the this fiber lilter has been <br />ruptured, an in•lina =lass fiber filter m.y be used ee <br />filter the saterial rithia the 211H. <br />4.3.2 Filtas holder then the sasple is beint evalwated for <br />ocher than volatile compounds, a lilter holder capable o! suppareint a <br />=leas fiber lilter and able eo rithaeaad SO psi or sore of pressure shall <br />be wed. 'chase devices shall haw s ninisum internal wlume o! 300 sl and <br />be equipped to aeeosmodate a oinisur lilter size of 47 s (tllerr holders <br />havint an inearnal eapuiey of 1.S liters or treater ue reeo~lsnded). <br />4.3.3 Materials o! cosu traction - filtration devices shall be <br />lade of inert saceriala rhieh rill not leach or absorb sample eompooanta. <br />Glass, polytetralluoroethylene (PTFE) os type 316 stainless steal equipsent <br />say be wad then evalwtint the nobility o! both ostanie and inottaaie <br />eosponants. Devices made of pith danairy polyethylene (10)!H), <br />polypropylene, or polyvinyl chloride say ba wad only than avaluatint the <br />nobility o! steals. borosilieaee clue bottles era recoasrndad !or wa <br />own other types of Hasa bottles, eapeeially than iaortaaies sea <br />eonatitwnts of concern. <br />4.4 Fileera - lilcara shall be lade o! boroeilicaq clue fiber, <br />shall haw an affective pore size of 0.6 O.t, v and shall contain no <br />binder saeeriala. Filters knorn to HFA eo mate =l=ess raquizamanea are <br />identified in Table S. vhan avalweint the nobility of setala, lileass <br />should be aeld•rashed prior co we by sinsint rich 1.0 h nitric aid <br />followd by three eonsaeueive rinses rich daionized distilled rater (a <br />sinimum of 1•liter per rinse !a racosmendad). Class fiber liltasa are <br />fratila and should be hae~dled with care. <br />4.3 p8 stress - a~ of the eossonly available pN me=tre are <br />aeeaptable. <br />4.6 ZHS a=tsaat aelleetion devieee - THDLAIA bats, =lass, stainless <br />stool or F'l1t; tea titbt tyriatea are wed to collect the initial liquid <br />phase a~ ttaa Baal phua then want the Z1(H deuces. These devices are <br />reeosmanded toi the tollorint condition: <br />4.`.1 It a caste contains an agwow liquid phase or if a taste <br />does not contain a sitnifieane asou~t of nonagwow Liquid (~f, <1 <br />percent o! total taste), the THDL1l bat should be wed to collect and <br />eosbine the initial liquid and solid extract. The syrinte is not <br />raeomendad in chase eases. <br />TEDIJIA is a setistered trademark of DuPont <br />