[7 Holes |  190mm OD]

[7 Holes |  146mm OD]

[3 Holes |  95mm OD]

[4 Holes |  115mm OD]

[8 Holes |  230mm OD]

It is glazed on the top surface. CoorsTek porcelain & ceramic labware has excellent thermal-shock resistance. It remains the responsibility of the user to determine the suitability for use. To prevent thermal stress cracks on porcelain ware, CoorsTek strongly recommends a heating/cooling rate not to exceed 200°C/hour. To prolong the life of your CoorsTek labware be sure to follow gradual heating and cooling rates. Use an oven or hot plate as an intermediate step when quicker heating/cooling rates are required. Gradually increase flame intensity when using a gas burner. Avoid contact of heated ware with a cold surface. Carefully inspect your ceramic labware prior to each use.