if you don't already have a multimeter, get one.
Test the ohms of your atomizers with it. A good atty will read about 3.2 - 3.5 ohms. You test it by inserting the red tip of the multimeter into the center hole of the battery end of the atty and the black tip resting on the battery edge of the atty as shown in the picture below.
If the atty reads 0 ohms or reads above 10 ohms then it's bad.
This way you will know if tw sent you duds and you can ask for replacements. That is - if you got a warranty for your purchase.