For test of bacteriostatis and fungistatis in case of product which is suspension and to be tested by direct inoculation,how we can detect the growth as due to product it is suspension,it renders the medium turbid, then how test for bacteriostatis an

For test of bacteriostatis and fungistatis in case of product which is suspension and to be tested by direct inoculation,how we can detect the growth as due to product it is suspension,it renders the medium turbid, then how test for bacteriostatis and fungistatis to be performed for suspension product.