RANGE OF APPLICATION The Accelerator for Topcoat 501 is used to reduce the drying time of ALEXSEAL® Premium Topcoat 501. Per each mixed (catalyzed and reduced) 2 quarts (2 liters) of ALEXSEAL Premium Topcoat 501, a maximum of 1 cap or 10 ml (1 /3 ounce) of ALEXSEAL® Topcoat 501 Accelerator may be added. Additional quantities of accelerator reduce pot life, and are not recommended.