Product Name or Catalog Number:

Product Catalog
Home >

Microgen Gram Negative ID, Panel A, for the identification of Enterobacteriaceae, can be used separately or with GN-B (MID65), AOAC approved, registered with the FDA for clinical use, 60 tests per kit, by Microgen® Bioproducts


The Microgen Gram Negative ID system employs 12 (GN A) or 24 (GN A+B) standardized biochemical substrates in microwells to identify the family Enterobacteriaceae and other non-fastidious gram negative bacilli (oxidase negative and positive) within 18 to 24 hours (48 hours for oxidase positive and non-fermenter bacilli).

The GN A strip, with 12 substrates, can be used separately to identify the most commonly encountered Enterobacteriaceae, or used with the GN B strip for total of 24 substrates, to identify a much more extensive list of gram negative bacteria, including oxidase positive bacilli and non-fermenters. The kit is intended for professional laboratory use only.


The Microgen GN-ID system comprises two separate microwell strips GN A and GN B. Each microwell strip contains 12 standardized biochemical substrates which have been selected on the basis of extensive computer analysis of published databases for the identification of the family Enterobacteriaceae and commonly encountered non-fastidious oxidase positive and negative gram negative bacilli. The dehydrated substrates in each well are reconstituted with a saline suspension of the organism to be identified. If the individual substrates are metabolized by the organism, a color change occurs during incubation or after addition of specific reagents. The permutation of metabolized substrates can be interpreted using the Microgen Identification System Software (MID60) to identify the test organism.

The GN A microwell strip is intended for the identification of the oxidase negative, nitrate positive glucose fermenters comprising the most commonly occurring genera of the family Enterobacteriaceae (28 genera and 45 species).

The GN A and GN B strips are used together to produce a 24 substrate system to identify non-fastidious gram negative bacilli, both oxidase negative and positive, including non-fermenters; in addition to all currently recognized species of the family Enterobacteriaceae (28 genera). Using both the GN A and GN B strips allow the microbiologist to identify 137 species of oxidase negative gram negative bacilli and 38 species of oxidase positive Gram negative bacilli (such as species of Pseudomonas, Alcaligenes, Flavobacterium, Aeromonas, Pasturella, Burkholderia, and Vibrio).

The GN B microwell strip is designed to be used only in conjunction with the GN A strip and not on its own.

Reagents needed, but not included in the kit:

Reagent Hardy Cat. No.
Nitrate A Z71
Nitrate B Z72
Nitrate C (zinc dust) Z73
Voges-Proskauer Rgt A Z91
Voges-Proskauer Rgt B Z92
TDA (Ferric Chloride) Z63
Indole Kovacs Z67
Oxidase Strips Z93
Mineral Oil Z79
Sterile Saline, 4ml R47
Microgen GN B panel, optional MID65

See all the Microgen ID products at the bottom of this page.

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  
MID64 GN ID, Panel A
Microgen, 60 tests R
$242.50 USD EA

Manufacturer Category Organism
Microgen: Biochemical Identification Systems

Rapid ID Test Kits

Test Disks, Strips & Reagents


Instructions for Use Video SDS


Brochures and Studies BioSafety Level


Related Products
MID62 Microgen Strep ID Panel, for identification of Streptococci and Enterococci, 20 tests per kit, by Microgen® Bioproducts
MID65 Microgen Gram Negative ID, Panel B, only to be used with the GN A strip (MID64), AOAC approved, registered with the FDA for clinical use, 24 tests per kit, by Microgen® Bioproducts
MID66 Microgen® Bacillus ID Panel, for the identification of Bacillus spp. and related genera, 20 tests per kit, by Microgen® Bioproducts
MID67 Microgen® Listeria ID Panel, 24 hour test for the identification of 6 species of Listeria, AOAC approved, 20 tests per kit, by Microgen® Bioproducts
MID69 Microgen® Staph ID Panel, for the identification of Staphylococcus species, 20 tests per kit, by Microgen® Bioproducts