Biofertiliser viable count check

FREE

Viable count per g or mL compared with the minimum in your specification.

Note

Count = 56 × 10⁶ / 0.1 mL = 5.60 × 10^8 CFU per g or mL.

Reference: Plate count on the medium specified for the organism (e.g. YEMA for Rhizobium). Always follow your approved SOP and current pharmacopoeia.

Formula

CFU = colonies × 10ⁿ / volume plated

56 colonies at 10⁻⁶, 0.1 mL → 5.6 × 10⁸ CFU per g

Use the medium, incubation and minimum count in the current specification (for example the Fertiliser Control Order) for the product type.