What value of the OD at 600nm corresponds to a bacterial concentration of the order of 10*8 CFU/ml for Gram-positive bacteria?

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Yasmine Tiah

Thank you very much for your answer. Best regards.

Djahoudi Abdelghani

Order of 10000000 ....100000000

Mr Heipiper's response is consistent with what is found in the literature.I think that an OD of 0.1 will be perfect for my inoculum.

Vishal Patel

As per growth curve the O.D should be at 540nm to achieve perfect inoculum

Thank you for this precision.I would to know the perfect bacterial concentration for Wheat seeds' inoculation with bacterium.

At 540nm how much the OD should it be ?