When purchasing a new glass or metal utensil/pot/object to be used in the kitchen for drinking, cooking, or eating purposes, you must first mikveh the item in a living body of water.
This means a body of water that is moving (I use my pond because the water is pumped, it receives rainfall quite often, and has fish - therefore the water must be living!). Ceramic or chinaware doesn't need to be put in the mikveh.Recite the blessing before you dunk the items:
Baruch Atah Hashem, Eloheinu Melech HaOlam, asher kidshanu b'mitzvotav v'tzivanu al tevilat kelim.
Got an item that needs to be dunked? Come to Rebbetzin Malkah's, go to a neighbor with a pond, or call your local mikvah - they have keilim mikvahs just for this purpose.
Refer to Blu Greenberg's How to Run a Traditional Jewish Household on page 104 for more info. Don't have one? Go to amazon.com and get one online in their used collection. It is a must have!