Table 1.

Distances of agar plates from patient’s mouth

Plate number	Plate position
Plate 1a, 1b (C)	1 foot from patient’s mouth at patient’s chest
Plate 2a, 2b (R)	On the right side of patient’s mouth at a distance of 1 foot
Plate 3a, 3b (L)	On the left side of patient’s mouth at a distance of 1 foot

C – Chest; R – Right; L – Left