What is monopersulfate?

[CarlD]

No, but I believe it's used for bromine pools.
You can happily and safely use a FAS-DPD Monopersulfate kit with your pool. You simply don't run the Monopersulfate test.
I have the Leslie's re-badged Taylor version.

[Poolsean]

Potassium Monopersulfate is also labeled as Non-Chlorine Shock and is sometimes called oxone (ox - own). It is a chemical patented by Dupont and is used primarily as an oxidizer. It is fast acting to rid Combined Chlorine in a pool or spa. It will increase/enhance the oxidizing ability of the chlorine in the water, but then reduce it back down to a safe level, usually within 15 - 30 minutes, so the kids can swim again the same day, rather than waiting for tomorrow.

Hope this has been helpful