MIL --- PR F --- 51193E (E A)
4.2.2.1 For examination. The sa mple filte rs sha ll be e xa mine d for a ll re quire d visua l a nd
me a sura ble cha ra cte ristics of this spe cifica tion.
4.2.2.2 For test. Sa mple s of a t le a st 100 gra ms e a ch of a dsorbe nt sha ll be ta ke n during the
filling of the first, te nth a nd twe ntie th filte rs a nd pla ce d in se pa ra te ope n conta ine rs. Those
sa mple s of a dsorbe nt sha ll be e xpose d to the sa me conditions of te mpe ra ture a nd humidity a s
the ir a ssocia te d filte rs. E a ch filte r sha ll be te ste d for a ir flow re sista nce (4.3.6.1) a nd le a ka ge
(4.3.6.2). Six of the se filte rs sha ll the n be te ste d in a ccorda nce with the fine s re te ntion te st
(4.3.6.8), the da mpne ss a nd milde w re sista nce te sts (4.3.6.9) a fte r be ing visua lly e xa mine d for
workma nship. Following le a ka ge te sting, the 14 re ma ining a cce pta ble filte rs sha ll be pa cka ge d
using the sa me me thods, ma te ria ls, e quipme nt, a nd proce sse s a s will be use d during re gula r
production. Concurre nt with or imme dia te ly following the pa cka ging of the filte rs corre spond -
ing to e a ch a dsorbe nt sa mple , a 10 gra m portion of e a ch mixe d a dsorbe nt sa mple sha ll be te ste d
for moisture conte nt in a ccorda nce with 4.3.6.3. The pa cka ge d sa mple filte rs sha ll the n be for -
wa rde d to the G ove rnme nt, a nd se ve n of the m subje cte d to structura l inte grity te sting in a ccor -
da nce with 4.3.6.4. The se se ve n filte rs sha ll be te ste d by the G ove rnme nt in a ccorda nce with the
D MMP ga s life te st (4.3.6.5) a nd the othe r se ve n filte rs sha ll be te ste d in a ccorda nce with the
CK va lue te st (4.3.6.6). If a ny sa mple filte r from the lot fa ils to me e t the re quire me nts for struc-
tura l inte grity, fine s re te ntion, da mpne ss a nd milde w re sista nce , D MMP ga s life , CK ga s life ,
dime nsions or workma nship, the first a rticle lot sha ll be re je cte d.
4.2.3 Acceptance criteria. If a ny first a rticle sa mple ite m fa ils to comply with a ny of the a p -
plica ble re quire me nts, the first a rticle sa mple sha ll be re je cte d. The G ove rnme nt re se rve s the
right to te rmina te inspe ction upon a ny fa ilure to comply with a ny of the of the re quire me nts.
The contra ctor sha ll obta in writte n a pprova l from the contra cting a ctivity prior to proce e ding
with re gula r production.
4.3 Conformance inspection.
4.3.1 Lotting. A lot sha ll consist of the filte rs produce d by one ma nufa cture r on one produc-
tion line , from the sa me ma te ria ls, with the sa me proce ss, a nd without a bre a k in production of
more tha n 10 ca le nda r da ys. H owe ve r, a ny one lot of filte rs sha ll conta in no more tha n one lot
of ca rbon, a nd a ne w lot sha ll be sta rte d whe ne ve r a ny ca rbon filling or fina l a sse mbly proce ss
e quipme nt cha nge is ma de . E a ch lot sha ll be ide ntifie d a nd controlle d in a ccorda nce with nor -
ma l industry pra ctice .
4.3.2 Sampling.
4.3.2.1 For examination. Sa mpling of pa cka ge d filte rs sha ll be conducte d in a ccorda nce in
a ccorda nce with the cla ssifica tion of cha ra cte ristics in 4.3.5. Sa mple s sha ll be se le cte d a t ra n -
dom.
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