Continue Shopping

MP2 Agar



This is a specialized isolation agar used for detection and identification of gram positive mastitis organisms from individual cow milk samples.



This cherry red, agar is prepared from a modified Columbia agar base with the addition of 5% washed bovine erythrocytes and full strength esculin.  This selective agar has been formulated to enhance the growth of gram-positive Staphylococci, Streptococci and Enterococci bacteria while inhibiting the growth of all gram- negative Enterobacteriaceae and Pseudomonas organisms. The addition of esculin enhances the capability of differentiating Streptococci.  Certain Streptococci will hydrolyze esculin, causing a mild background blackening for E-strep and a mild greening or no background coloration for suspect Streptococcus agalactiae and Streptococcus dysgalactiae organisms.  All suspect Streptococcus agalactiae organisms should be moved to our special Camp media for confirmation.

Refer to table on back for expected culture responses.


Organism Growth Reaction
Strep. agalactiae Excellent Esculin negative
Staph. aureus Excellent Hemolytic (beta)
Mycoplasma Not Applicable

Strep. dysgalactiae Excellent Esculin variable
Strep. uberis Excellent Esculin positive
E- strep Excellent Esculin positive
Staph. species Excellent Hemolytic variable
E. Coli Inhibited

Klebsiella pneumoniae Inhibited

Klebsiella species Inhibited

Pseudomonas species Inhibited

Pseudomonas aeruginosa Inhibited

Pasteurella Fair

Proteus Inhibited

Serratia Inhibited

Bacillus Inhibited

Yeast n/a

Mold n/a

Nocardia n/a

Prototheca Inhibited

Trueperella pyogenes Excellent 24-48 hour
C. bovis n/a

Additional information

Weight .06 lbs
Dimensions 3.5 × 3.5 × .5 in


There are no reviews yet.

Be the first to review “MP2 Agar”

Your email address will not be published. Required fields are marked *

Post comment