Fit Sample Point
Identifythewatersystemtobesampledandanappropriatelocationfromwhichtoobtainarepresentative
sample.Largesystemsmayneedtobesampledandtestedatmultiplelocations.Attachthesamplepoint
adaptertothepointinthesystemtobetested.Itisrecommendedthatasamplepointadapterbettedand
retained to each sample point to avoid cross contamination. The sample line pressure should not exceed 6
bar (87 psi).
Resuspend the Bacteria
Disconnectthelterfromthesamplepointadapterbytwistingthelockringandpullingthelterfromthet-
ting.Removethewhitescrewcapfromthelterandreplaceitontheoppositeendofthelter.
•Pullthesyringebacktothe0.5mlmarktosuspendtherecoverybuffer,thenpushthesyringeall
thewaytothe0mlmark.
•Repeatthisprocesstwo(2)additionaltimes.
•Drawthesyringebacktocollect0.1mlofsample,thendisconnectfromthelter.Thesyringe
nowconainstherecoveredbacteriareadyfortesting.
Add Sample to the Test Strip
Removethetestfromitsfoilwrapping,andplacethetestonaatsurface.
Thefoilwrappingshouldnotbeopeneduntilimmediatelypriortorunningthetest.Ifthefoilisopenedand
thenthetestisnotperformedwithin60minutes,discardthetest.
Beforeuse,thetestshouldhave2palebluelinesacrosstheresultwindow.Ifthesearenotpresent,notifyyour
suppliertoreplacethetestkit.Takethepipettefromthefoilwrapping.
Placethesyringeoverthesmallsamplewindowattheendoftheteststrip,andpresstheplungersothat0.1ml
of sample is dispensed onto the test strip. Record the time.
Read the Test Strip
Leavetheteststripsittingonaatsurfaceduringincubation.Foroptimumresultsthetestresultsshouldbe
performed at room temperature. After waiting 25 minutes, examine the test strip in good lighting. If the
testisnotreadwithin60minutesofaddingthewatersample,itshouldbediscardedandanewtestshouldbe
run. The test should show one of the following results on the large result window on the test strip:
Negative Result:One(1)REDlineacrosstheresultwindowattheendfurthestfromthesamplewindow.
Positive Result:Two(2)REDlinesacrosstheresultwindow.Theredlineclosesttothesamplewindowmay
beveryfaint(palepink).Anydistinctline,nomatterhowfaint,shouldbecountedaspositive.
Invalid Result: If the test does not show any red lines; or if it only shows a line at the end closest to the sample
window;orifthelinefurthestfromthesamplewindowisveryfaint,thenthetestisinvalid.Repeatthetestand
notify your supplier for technical support.
Test Procedure
Take the Sample
Beforetakingthesample,ushthesampleportfor15seconds.Attachtheltertothesamplepointadapter;
pushtheopenendofthelterintotheplasticluerttingandtwistthelockingringtosecure.Holdthesample
collectionbottleundertheoutletportofthelter.
Openthesystemvalvetoallowtheltrationtostart,lter250mlofthewaterandcloseoffthevalve.
Ifthesampletakeslongerthan10minutestolter,thenstoptheltrationprocessandmeasuretheamountof
liquidinthecollectionbottlebeforeproceedingtothenextstep(thedetectionlimitwillbeaffected,seLimitof
Detectionsection).