BOTZ PLUS 9020 - the liquid effect intensifier for the firing range from 1150°–1250°C BOTZ PLUS increases the effects particularly nicely on BOTZ stoneware glazes and distinctly increases the brilliance of the ceramics. Use BOTZ PLUS to re-combine the substances of the glaze contents combine during firing - dependent on the layer thickness - and change the colours, structures and the brilliance. With BOTZ PLUS, you can even reduce the firing range of the stoneware glazes to 1150°C.