Package Evaluation Training 5 conductivityredink customer

Package Integrity –General Information Conductivity and Red Ink Test PE-05/2012-04-01 ►This test method aimed to confirm the tightness of microbiological barrier for aseptic package 1..

Package Evaluation

T i i

Training

Conductivity and Red Ink Test

PE-05/2012-04-01

1 Package Integrity – General information

Agenda

2 Conductivity Test + Practical

3 Red ink Test + Practical

PE-05/2012-04-01 / 2

1 Package Integrity –

General Information

Conductivity and Red Ink Test

PE-05/2012-04-01

►This test method aimed to confirm the tightness of

microbiological barrier for aseptic package

1 Package Integrity – General

Information

microbiological barrier for aseptic package

►The microbiological barrier consist of Inner polyethylene,

Aluminum Foil, Lamination layer between the Al-foil &

paper board

►Following test methods used to find out the integrity of

microbiological barrier:

• Conductivity test - Screeny

• Red ink test - Tightness

• Copper test – Contact position

1 Package Integrity – General

Information

1 Outer PE

2 Paperboard p

3 Lamination

4 Al-foil

5 Inner coating 1

6 Inner coating 2

Corrective

PE-05/2012-04-01

Depth of

Defect

Conductivity Test

Red Ink Test

Tight Package

Actions Needed?

/ 5

2 Conductivity Test

Conductivity and Red Ink Test

PE-05/2012-04-01

2 Conductivity Test

►Detect Rupture in Inner PE layers, which leaves

Principle

Aluminum foil uncoated

►If positive reading, confirm package integrity by

red ink test

Note:

Only Red ink test used for high fat products, fat

creates insulating layer on the inside of the

packages and prevent current from circulation.

Note! Conductivity test cannot detect blocked TS

PE-05/2012-04-01 / 7

2 Conductivity Test

Set up of the conductivity test

3

1

7

6 3

5

Salt solution:

4 2

Note: Ammeter part no 90243-0110

Dilute 10 gram of NaCl

or salt to 1 litre of water.

(1% salt solution)

2 Conductivity Test

►Cut the package in

Preparation of the samples

two halves, or leaving the LS side intact to keep the package in one sample.

►Rinse the packages with clean tap water with clean tap water ensuring that all product residue is gone

PE-05/2012-04-01 / 9

2 Conductivity Test

Preparation of the samples

►Dry thoroughly the cut edges of the package with paper towel Trim the edges if necessary

Wet edges can give a false positive

PE-05/2012-04-01 / 10

►Add 1% salt solution into a plastic

Procedure

2 Conductivity Test

►Add 1% salt solution into a plastic

basin

►Fill a third of the package with the salt

solution

►Immerse the package in the basin Salt

solution level on outside package must

higher than the flaps

►Dip the positive probe (Red) of the

ammeter inside the package, the

negative one (Black) into the solution in

the bowl

Note! Check the battery of ammeter

before testing

PE-05/2012-04-01 / 11

2 Conductivity Test

Negative reading

Evaluation of the samples

If the reading is 0 μA

• Positive reading

If the reading is >0 μA

-If the reading is unsteady, wipe the edge

once more and make a new reading

If still unsteady, let the sample dry

- If the deflection is quick and steady

- If the deflection is quick and steady,

there is uncovered Al-foil The sample

must be further confirmed by red ink test

for package integrity

3 R d I k T t

3 Red Ink Test

Conductivity and Red Ink Test

PE-05/2012-04-01

3 Red Ink Test

►An aseptic package is defined as leaking when

Principle

red Ink penetrates through all coating layers

(inside PE + Al-foil + laminate) and leave stains

on the paperboard

PE-05/2012-04-01 / 14

3 Red Ink Test

Preparation of the samples

►Cut the packages in two halves or

keep the package in one sample

►During trouble shooting a hole can

be cut out in the front panel of the

package This allows investigation

of the package as a whole

►Dry carefully the inside of the

halves of packages with a paper

PE-05/2012-04-01 / 15

towel

3 Red Ink Test

Procedure

►Pour red ink inside the half

package red ink must over the

package, red ink must over the

critical points of the package,

such as corners, TS, crosses

►Leave the red ink inside the

package for at least 5 minutes

►Remove the excess of red ink

with the pipette

*** Note! Do not po r red ink o t

*** Note! Do not pour red ink out

of the package as this could lead

to false positive reading.

►Dry the package thoroughly,

wet ink left in the package

could jeopardise the result and

4 Red Ink Test

►When the ink has dried, unfold

Evaluate the samples Integrity

the flaps and peel off the outer

layer

►To facilitate evaluation it is

recommended that the

paperboard is peeled off starting

from the edge of the LS

►Visually inspect the package

Defective

If any ink has penetrated this is

considered a defect

PE-05/2012-04-01 / 17

Defective

4 Red Ink Test

►If the red ink spot is larger on

Evaluate the samples

the peeled external layer than

on the package side, it means

that the ink has leaked from the

OUTSIDEof the package to the

INSIDE

►This is NOT an integrity defect

but is a false positive p

►It is very important to ensure

that there are no ink spillage on

the working station during this

test as it could interfere with the

result

PE-05/2012-04-01 / 18

End of conductivity

and Red ink test

PE-05/2012-04-01

Appendix –Chemicals

Red ink and Copper solution

Appendix : Chemicals

Leak detection fluid – Red ink TP Part no 90298-26

PE-01/2012-04-01 / 21

Appendix : Chemicals

Leak detection fluid – Red ink

PE-01/2012-04-01 / 22

Appendix : Chemicals

Leak detection fluid – Red ink

PE-01/2012-04-01 / 23