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Contamination:
This can be resulted from the attachment of amplified virus nucleic acids
on places (eg. Operator’s hands, equipment, or package of unused kits…etc) due
to the unskilled operation, unguarded handling, or “Cleaning Plan” is not
properly done. Improper cleaning may lead future tests to all positive results.
Under what circumstances should a suspicion of
contamination arise?
1. Positive results gained from all samples
continuously in 2~3 consecutive days.
2. Positive results obtained continuously
from guaranteed SPF.
How do I verify if the operating space is contaminated or
not?
One i-screen reaction can help you with the contamination
verification. Pre-heat the oven for more than 30 minutes first. Start test from
step 5 after defrosting and dissolving the test kit. Without any shrimp sample
is being taken, regular procedure is followed from tube 1. If a positive
result is still obtained, it shows the working space is being contaminated.
How should I resolve a contamination problem?
Please refer “Cleaning Plan” chapter and follow its step for
cleaning according to incidents happened if liquid spilled. After proper
cleaning, please confirm whether contamination is excluded by using another new
kit with the method above. Nevertheless, contact your local agent for immediate
and direct assistance if needed.
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Items
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Cleaning
Plan
|
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Before test
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After tests
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Annually
|
Liquid Spilled
|
|
Dissolving Space
|
Hands
|
ˇ
|
|
|
ˇ
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Table
|
Check
|
|
|
ˇ
|
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Tube Rack
|
Check
|
ˇ
|
|
ˇ
|
|
Micropipette (Black)
|
Check
|
ˇ
|
|
ˇ
|
|
Sampling Space
|
Hands
|
ˇ
|
ˇ
|
|
ˇ
|
|
Table
|
Check
|
ˇ
|
|
ˇ
|
|
Forceps
|
Check
|
ˇ
|
|
ˇ
|
|
Micropipette (White)
|
Check
|
ˇ
|
|
ˇ
|
|
Reacting Space
|
Hands
|
ˇ
|
ˇ
|
|
ˇ
|
|
Table
|
Check
|
ˇ
|
|
ˇ
|
|
Tube Rack
|
Check
|
ˇ
|
|
ˇ
|
|
Timer
|
|
ˇ
|
|
ˇ
|
|
Reaction Oven
|
Outer
|
|
ˇ
|
|
ˇ
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Inner
|
|
|
ˇ
|
ˇ
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