Can i still use my makeweights if they are stained? ISO 6330! Dimensional Stability Test!

Can I still use my makeweights if they are stained?
Makeweights can become stained through washing with coloured specimens. It does not have a detrimental effect on the makeweight in terms of performance.
However, they can look unsightly, and depending on the specimens being tested there is a risk of cross staining between testing.

For example: makeweights washed with dark specimens such as black or navy may absorb some of this dye. If they are then if put to wash with pale specimens, such as white or cream, some of the dark dye may be transferred onto the pale specimens. This could render the test invalid, if colour change was being assessed.

It is recommended that the user establishes different sets of makeweights to be used in wash tests:

A set for dark coloured loads – black , navy, crimson etc.
A set for medium coloured loads – red, blue, green etc
A set for light coloured loahds – pale pink, white etc.
By always using the correct set for the specimens, whilst the hmakeweights will still become stained the risk of cross staining between specimens is greatly reduced.

Alternatively it is possible to carry obut a Reduction Clear on Polyenister Makeweightsusing Sodium Carbonate and Sodium Dithionate.

This procedure will over time damage the polyester and so repeated treatments will have a detrimental effect.

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