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2 MediTEST User Guide Page 4
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4.3 PACK CONTACT COMPONENTS
4.3.1 PRODUCT PLATFORM PORVAIR
The Product Platform is covered in a porous material (Porvair mat). This allow any air from a fugitive
leak to pass unhindered. The pack to be tested is place directly on the mat. Should the mat become
contaminated or deformed, it may be replaced. Your supplier can assist you in this respect.
4.3.1 PRODUCT NESTS
It is not generally necessary to employ a product nest when testing a sample, however it may be
advantageous to use a product nest where a sample is likely to rupture (due to a weak seal) and the
nest would provide containment in respect of the spread product.
Product nests may also be employed to ensure consistent location within the testing area.
When a nest is employed it rests on the Product Platform (base of the drawer unit) and can be shaped
to fit a particular pack. If there is a need to test packs of different sizes (plan forms) sequentially, then
nests can be used for each type of pack.
Where the use of Product Nests is dictated, they will be supplied as part of the system (See Section 15
for your specific application). For requirements subsequent to the installation of the system, they can
be supplied as part of a Method Development package. Customers can also machine or source their
own. Your supplier can assist you in this respect.
4.3.2 PRESSURE PLATE PORVAIR
The internal pressure plate provides a reaction to the pack when it expands under test. It is also fitted
with a Porvair mat that allows the transmission of air from a leaking pack. If the mat becomes
contaminated or deformed, it may be replaced. Your supplier can assist you in this respect.
MEDITEST DESCRIPTION
Porvair material. Is held in place
with double
-
sided adhesive. If a
Product Nest is employed, Porvair
will not be required.
Porvair material is attached to the
Pressure Plate (normally out of
view). It is held in place with double
-
sided adhesive.
Figure 4.4
