Division 2.1 The combination of antibiotics referred to in point 2 must produce an effect at least equivalent to the following concentration in the final diluted semen:F1

not less than 500 μg streptomycin per ml final dilution;

not less than 500 IU penicillin per ml final dilution;

not less than 150 μg lincomycin per ml final dilution;

not less than 300 μg spectinomycin per ml final dilution.