1 Learn more.  Google Cloud Platform and the Level 3 CDN. Google Cloud Platform customers can receive special egress rates to the Level 3 Content Delivery Network. Learn more. DDoS Mitigation Capabilities Enhanced. Level 3 adds proxy and behavioral analytics. Learn more. LEVEL 3 NETWORK SECURITY SERVICES. Take control of your network security. Own ...
Lemon Test - The lemon test is to determine the ability of your granite to resist etching. Follow the steps below: 1  Place a wedge of lemon or lime, cut side down, on the sample overnight. 2  Wipe the sample in the morning and hold it at an angle to the light.  Check for a rough spot where the lemon was placed.
The Acid Test for Carbonate Minerals and Carbonate Rocks. 1  Hydrochloric acid on limestone: This video demonstrates what happens when one drop of dilute (10%) hydrochloric acid is placed on a piece of limestone. Protective glasses and gloves are recommended when doing the acid test.