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HardyCHROM™ ESBL Agar, (Extended-Spectrum Beta-Lactamase), a chromogenic plating medium, 15x100mm plate, order by the package of 10, by Hardy Diagnostics.

Clear, quick results in as little as 18 hours!

HardyCHROM™ ESBL is a selective and differential chromogenic medium which is intended for the qualitative and presumptive detection from stool specimens of: 1) Enterobacteriaceae that are potentially non-susceptible to ceftazidime and cefpodoxime; and 2) Extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli, Klebsiella pneumoniae and Klebsiella oxytoca.

ESBL or Extended Spectrum Beta Lactamases refer to a group of enzymes produced by some species of bacteria that can mediate the organism’s resistance to one or more broad spectrum penicillins and cephalosporin antibiotics. Hardy Diagnostics is proud to offer this breakthrough culture media that will help screen ESBL quickly and more efficiently from stool specimen.

Features and Benefits:

  • Results in as little as 18 hours

  • Easy-to-read color read-out

  • Escherichia coli produce pink colonies

  • Proteus mirabilis produce yellow/gold colonies

  • Klebsiella pneumoniae produce blue colonies





See the Instructions for Use (IFU) below (under Technical Information) for the complete procedure with color photos.

This media is to be stored and incubated in the dark. If you have a light in your refrigerator, incubator, or you leave the media exposed to light on the bench top, Hardy Diagnostics offers free Blok-Boxes. Blok-Box is a reusable cardboard box that holds one sleeve of ten petri plates.

Please ask Customer Service if you would like a free Blok-Box sent with your order. Customer Service – (800) 266-2222.



To order this product, enter the quantity you wish to order in the QTY field and click the shopping cart icon. When finished, click My Shopping Cart to proceed to checkout or Continue Shopping to shop for more products.

Cat No. Description Price Curr UOM Qty  
G321 HardyCHROM ESBL
HDx, 15x100mm plt 10/pk R
$35.25 USD PK10

Manufacturer Category Organism
Hardy Diagnostics: prepared media

Media, Prepared

E. coli

Klebsiella spp.

Proteus spp.


Instructions for Use Video SDS


N/A



Brochures and Studies BioSafety Level






N/A

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