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NEMIS Technologies Listeria Risk Test
The risk of listeria is ever-present in food production environments. That’s why testing for Listeria spp. is a crucial component of your environmental monitoring program. Listeria is a leading cause of foodborne illness and costly product recalls. Protect your customers and your business with the N-Light™ Listeria spp. Test from NEMIS Technologies. Our simple and effective testing platform allows you to assess your factory’s true contamination risk and prevent outbreaks before they start. Best of all, our tests don’t require complicated training to be properly used. They’re the simple and cost-effective solution for efficient environmental monitoring.
The NEMIS N-Light™ Listeria spp. Test utilizes our proprietary Aquaspark™ platform which incorporates pioneering phage technology to quickly detect even small amounts of live bacteria. The N-Light™ Listeria spp. Test detects a broad spectrum of Listeria species, including Listeria monocytogenes. This allows you to quickly assess and improve hygiene standards in your food production environment. Unlike traditional lab tests that take days to get results, the NEMIS N-Light™ Listeria spp. Test produces actionable results in as little as 24 hours. Fast, accurate, easy to use. Take control of environmental monitoring with solutions from NEMIS Technologies.
Listeria spp. – Status Quo
Listeria is a genus of bacteria that often enters food production facilities through raw materials, posing a potential risk of contamination. While not all Listeria species are pathogenic, the presence of species such as Listeria monocytogenes in food products can lead to severe foodborne illnesses, particularly in high-risk groups.
AYOPI Groups are at the Highest Risk
N-Light™ Listeria spp. — indicator test
Detecting Listeria spp. is currently a crucial component of environmental monitoring programs in the food industry. The N-Light™ Listeria spp. indicator test provides a potent and broad-spectrum solution for detecting a wide range of Listeria species, enhancing factory hygiene and safety practices.
Compared to tests focused solely on Listeria monocytogenes, N-Light™ Listeria spp. means more positive results and more actionable insights for improving hygiene standards in food production environments.
N-Light™ Listeria spp. tube contains a unique, innovative technology
Consider Your Sampling Needs: N-Light™ MaxiSampler vs N-Light™ swab
By choosing the right tool for each surface type and size, you can meet regulatory guidelines effectively while maximizing sampling efficiency and accuracy.
- Designed for Large Surface Coverage: Excels in sampling larger, flat surfaces such as floors, walls, and countertops. Provides broader detection of potential contamination across sizable zones.
- Guideline Endorsed for Broader Surveillance: Environmental monitoring guidelines often endorse sponges for larger, straightforward areas to capture a comprehensive view of contamination risks.
- Surface Area: With a typical range up to 0.3 m² (like a 30×30 cm area), N-Light™ MaxiSampler maximizes sampling on expansive surfaces, offering robust environmental surveillance.
- Ideal for Hard-to-Reach Areas: Swabs are perfect for narrow or intricate surfaces such as equipment joints, cracks, and small parts that might otherwise be missed.
- Recommended by Guidelines for Small Surface Sampling: Many guidelines, such as those from the FDA and ISO, suggest swabs for sampling limited areas or surfaces with complex geometries.
- Surface Area: Typically covers around 0.1m² (like a 10×10 cm area), making swabs ideal for focused or spot sampling on high-touch or high-risk zones.
Simple, effective testing process
Sample
Transfer
24 h / 37 °C
Incubate
5 min
Activate
10 s
Measure
Lab confirmation
Positive N-Light™ Listeria spp. test tubes can be sent to an internal or external microbiological laboratory for analysis of the presence of Listeria spp. and Listeria monocytogenes with cultural methods (e.g. ISO 11290-1) or PCR methods (e.g. Eurofins).
N-Light™ Listeria spp.
NEMIS product REF 00048Product description
N-Light™ Listeria spp. is a qualitative test method for rapid detection of the Listeria spp. bacteria, including Listeria innocua, Listeria welshimeri and the pathogenic species Listeria monocytogenes. The test method is suitable for use in food processing areas and equipment as part of an environmental monitoring program. Final test results are available 24 h after sampling.
Storage conditions: 2-8 °C / 36-46 °F, DO NOT FREEZE
Transport conditions: ambient (short duration only)
HS tariff number 38221900
Country of origin CH
Each test consists of the following components:
- N-Light™ Biosafety Tube, filled with N-Light™ Listeria spp. Enrichment Broth, 2 ml
- N-Light™ Dispensing Closure, containing the N-Light™ Listeria spp. AquaSpark® tablet, 1 pc. / 15 mg
Technical specifications
NEMIS tests each production batch against the specifications listed below.
| General characteristics | Specification |
|---|---|
| Broth general appearance | Yellowish, clear waterlike solution |
| Broth visible turbidity | No particles |
| Broth optical density (OD600) | < 0.10 |
| Broth Volume | 1.80 – 2.20 ml |
| Broth pH value | 6.60 – 7.00 |
| Functionality test (Background) | < 3,000 RLU (NEMIS BTL1 luminometer) |
| Quantity of AquaSpark® | Internal specification |
| Microbial performance | Specification |
|---|---|
| Sterility control | No growth, 7 days @ 37 °C |
| L. monocytogenes ATCC 19111 | Positive result |
| L. welshimeri ATCC 35 897 | Positive result |
| L. innocua WSCL 2011 | Positive result |
| E. coli ATCC 8739 | Negative result |
| E. faecalis ATCC 29212 | Negative result |
| S. aureus DSM 1104 | Negative result |
Certificates of analysis are available on request.
Packaging specifications
| General characteristics | Primary packaging (test tube) |
Secondary packaging (product box) |
Tertiary packaging (distributor box) |
|---|---|---|---|
| Amount | 1 test | 50 tests (1 x 50) | 300 tests (6 x 50) |
| Bar code / GTIN | See below | 7649994979430 | 7649994979423 |
| Length | 1.9 cm | 26.2 cm | 36.3 cm |
| Width | 1.9 cm | 11.5 cm | 27.4 cm |
| Height | 11.1 cm | 11.6 cm | 24.4 cm |
| Net weight | 0.010 kg | 0.600 kg | 3.950 kg |
| Total plastic amount | 0.008 kg | 0.376 kg | 2.256 kg |
| Non-reusable plastic amount — in the product — in the packaging |
0.008 kg 0.000 kg |
0.375 kg 0.001 kg |
2.250 kg 0.006 Kg |
Lot and serial number of the test
Each test has a unique number printed on the tube label. The human readable format is LLLLLLL-XXXXX. Additionally, this number is encoded without the hyphen in a linear barcode of type Code 128:
- LLLLLLL: 7-digit lot number
- XXXXX: 5-digit consecutive number
N-LIGHT™ LISTERIA spp. - REQUIRED MATERIALS
- N-Light™ Listeria spp. test tubes
- NEMIS Bench-top Luminometer
- NEMIS Dry Block Heater
- Kitchen Timer
- Optional: N-Light™ Activation Tool (REF 00008)
- N-Light™ sampling devices containing compatible moistening solution
- N-Light™ sterile dry swabs BP with separate PBS buffer (REF 00039)
- N-Light™ sterile dry swabs BP with separate neutralizer (REF 00037)
- N-Light™ sterile MaxiSamplers with separate PBS buffer (REF 00060)
- N-Light™ sterile MaxiSamplers with separate neutralizer (REF 00064)