[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.