CURB-65 is a BTS recommended severity rating for community acquired pneumonia (CAP) and should not be confused with the ABC criteria defined in the flow diagram. Patients with a CURB-65 score of 3 or more are at highest risk of death and should be managed as having severe pneumonia.
Blot out spills as soon as they occur. Due to the porous nature of slate, it is best not to wipe spills on countertops. When wiped, the fluid spreads which creates and spreads stains on your countertop. Clear stains on your slate with a poultice meant for natural stone countertops.
This is not to say that granite will not stain or scratch, but over the course of time, given normal use, it should be very resistant to damage. Marble, Limestone, Slate and Onyx are much less durable than granite and can both stain and etch (lose their finish and become dull), and also scratch. With the proper application and care, these stones can retain their beauty for many years, but will most likely weather a bit with time.