Pink Stain Remover

Hi. Been brewing of and on for about twenty years now, I have always used Pink Stain Remover as a steriliser.
It appears to be very difficult to get at the moment. Is there a decent substitute? And if any one has a supplier of PSR can you forward me their details?

Cheers!

https://www.cleverbrewing.com.au/pin...n-remover.html

Just bear in mind that technically pink stain remover is a cleaner not a steriliser.

For a proper steriliser you'd be looking at something like sodium percarbonate or phosphoric acid like "StarSan"