How do I find the expiration date on a Mirka Polarshine bottle?
Check this handy guide to confirm the expiration dates of Mirka® Polarshine polishing compounds.
Bottles produced from January 2022
The YYWW and MMYYYY formats are superseded by a new, more precise DDMMYYYY format which displays the expiration date instead of the production date. The batch number remains in use, in the same form, but it is placed on a separate line alongside the expiration date.
Where to find the expiration date:
On a 250ml bottle: Batch number and expiration date are laser printed onto the upper part of the bottle.
On a 1-litre bottle: Batch number and expiration date are engraved onto the bottom part of the bottle.
On a 2.8-litre can: Batch number and expiration date are laser printed onto the bottom part of the can.
On a 5-litre can: Batch number and expiration date are laser printed onto the bottom part of the can.
On a 17-litre bin: Batch number and expiration date are laser printed onto the bottom part of the bin.
On a 180-litre barrel: Batch number and expiration date are located on the label on the lid.
The expiration date depends of the product.
Earlier, the shelf life of Polarshine compounds has been 2 years from the marked production date. This has now been expanded to 3 years for the following Polarshine products: 20, 15, 12, 12 Black, 10, 8, 5, 3, Liquid Wax, E3 and Polarshine 45. The shelf life of Polarshine 35 and 25 remains at 2 years.
Earlier styles of marking the batch number and expiration date
Bottles produced from 1st of October, 2019
For clarity, the production date is changed from YYWW to MMYYYY format. A typical production date will now read 092019.
Bottles produced before 1st of October, 2019
The bottle is marked with a batch number and a production date in YYWW format, which consists of the last four digits. For example, if the numbers are 1938, that stands for week 38 of 2019.
Related articles
What is the difference between Abranet and Autonet?
Mirka® Abranet has been developed for sanding filler, primer, lacquer, composite and many other materials. Mirka® Autonet has been developed for the automotive refinishing industry, fitting a wide spectrum of applications.
Which backing pad fits my tool
Using an incorrect backing pad can cause additional strain on your sander. We have a useful guide to help you choose the correct backing pad.