Slot burners:

Premix burners are known as Bunsen, Méker, or slot burners depending on whether they have one large hole or a number of small holes, or a slot as outlet port(s) for the gas mixture, correspondingly. In that case the burner contains various parallel slots it is known as a multislot burner (example for a three-slot burner). The small diameter of the holes within the Méker burner or the narrowness of the slot in the premix categories of burner commonly produces an around laminar flame, and is generally combined along with a separate unit for nebulising the slot burner commonly avoids the unwanted flash back of the flame within the burner housing.

The benefits along with the premix burner are that it is quiet to operate and the analytical signal is considerably less noisy than that of total consumption burner (described below). Therefore, it also has certain drawback like; most of the sample solution goes down the drain that leads to loss of sensitivity within the determination of a given analyte. In addition, special precautions are essential to prevent a flash back as the fuel and oxidant both are present and well mixed within the mixing chamber before combustion.