Add to Cart Quick view Petrifilm™ Staph Express Count Plates, 50-pk MSRP: Now: $190.42 Was: Petrifilm™ Staph Express Count Plates, 50-pk Results in 24 Hours. Plates are sample-ready, eliminating all the time-consuming steps of preparing media/agar dishes. Can be used with the Petrifilm® Plate Reader Advanced for consistent, fast,... 6490 MSRP: Now: $190.42 Was: Add to Cart Quick view Qty in Cart: 0 Order Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $190.42 Was: Subtotal: Add to Cart