RAPID'L.mono Medium
Selective chromogenic medium for the direct detection and enumeration of Listeria monocytogenes and Listeria spp. in food and environmental samples. 24 hr to results.
Overview
RAPID'L.mono Medium is a selective chromogenic medium for the direct detection and enumeration of Listeria monocytogenes and Listeria spp. in food and environmental samples.
Key Benefits
-
Fast
- L. monocytogenes detection 24 hr after enrichment*
- Listeria spp. detection 24 and 48 hr after enrichment
- L. monocytogenes enumeration in 24 hr without confirmation**
- L. monocytogenes confirmation in 24 hr after using the iQ-Check Listeria monocytogenes II Kit
-
Simple and Cost Effective
- Only 1 broth, and 1 plate required for each sample
- Easy confirmation
-
Easy-to-Read Chromogenic Reaction
- L. monocytogenes (PIPLC+/xylose-) forms blue colonies
- L. ivanovii (PIPLC+/xylose+) formsblue-green colonies with distinct yellow halos
- Other Listeria species form white colonies
-
Multipurpose Chromogenic Medium
- RAPID'L.mono is the only chromogenic method to be validated for L. monocytogenes and Listeria spp. detection on the same plate
- Can also be used for the enumeration or confirmation of L. monocytogenes
-
Validation
- Certified NF VALIDATION according to the ISO 16140 standard and validated by AOAC
* Within the scope of ISO 16140 NordVal validation, no confirmation is required.
** Within the scope of the AFNOR validation, confirmation is not required when the presence of L. monocytogenes has been confirmed at the detection stage.
Principle
Reading and identification of L. monocytogenes are easy due to the unique chromogenic principle (PI-PLC activity) of RAPID'L.mono medium and the fermentation of a sugar (xylose)
- L. monocytogenes (PIPLC+/xylose-) forms blue colonies
- L. ivanovii (PIPLC+/xylose+) forms blue colonies with a yellow halo
- Other Listeria spp. (PIPLC-/xylose+ or -) form white colonies with or without a yellow halo
RAPID'L.mono medium is very specific and inhibits the growth of other bacteria and yeasts.
The rhamnose test (< 6hr) and spot inoculation on Agar Listeria (AL agar) have been validated for confirmation of colonies grown on RAPID'L.mono medium.
Other Applications of RAPID'L.mono Medium
- As a second selective medium in different standardized protocols (for example, the ISO 11290 reference method)
- To confirm positive results obtained using the iQ-Check Listeria monocytogenes II PCR Detection Kit
- To enumerate L. monocytogenes in 24 hr without confirmation
RAPID'L.mono Chromogenic Assay
| Enzymatic Activity |
 L. monocytogenes |
 L. ivanovii |
 L. innocua |
 L. welshimeri |
|---|---|---|---|---|
| PI-PLC detection | yes | yes | no | no |
| Xylose fermentation | no | yes | no | yes |
Ordering Information
RAPID'L.mono Medium is offered as ready-to-use plates (3563964) or as a dehydrated agar base (3564293).
When using the dehydrated broth base, RAPID'L.mono Supplement 1 (3564294) and RAPID'L.mono Supplement 2 (3564746) need to be added to the molten agar prior to pouring plates.
For convenience, RAPID'L.mono Medium is also available as a kit (3555294) comprising 190 ml of medium and one vial of each supplement.
Ordering
items
Use the filters below to refine results!
Pkg of 120, 90 mm agar plates
Pkg of 1, 500 g of dehydrated agar base, enough for 7.4 L of medium
Pkg of 10, vials of supplement 1 for 'RAPID´L.mono Agar, enough for 10 x 500 ml of medium
Pkg of 6, 225 ml bottles — for challenging and non-challenging enrichment conditions
Pkg of 1, 500 g — for challenging and non-challenging enrichment conditions
Pkg of 1, 5 kg
Pkg of 1, 500 g
Pkg of 1, 5 L x 2 bags
1 ml x 28 tubes