What is this used for? Can it be used at any temperature?

This mixing medium works by suspending the glaze particles in the mixture, so that it doesn't settle as quickly as it would without the mixing medium. This also helps the colour and consistency stay constant when the glaze is brushed onto a piece. This product can be used with all of our powdered glazes and fired up to Stoneware temperatures. The recommended mixing ratio for our powdered glazes is 1 part powder:1 part water:0.5 parts mixing medium, but I would suggest holding off adding all of the water at once so you can get the consistency right.

I hope this helps,
Hannah