The Liofilchem® Streptosystem 12R is a comprehensive system for the identification of streptococci based on biochemical tests. This 24-well system evaluates 12 biochemical reactions across two tests per system, making it a valuable tool for clinical diagnostics, microbiology research, and laboratory workflows.
Key Features:
- Comprehensive Identification:
- Differentiates a wide range of Streptococcus spp. and related organisms.
- Utilizes 12 desiccated biochemical substrates for accurate identification.
- Numerical Code System:
- Reactions produce a 4-digit numerical code for easy identification using a codes table or software.
- Ready-to-Use:
- Pre-filled wells with desiccated substrates reduce preparation time and ensure consistency.
- Two Tests per System:
- Each system includes 24 wells, allowing the performance of two separate tests per setup.
- Rapid Workflow:
- Results available within 18–24 hours after incubation.
Applications:
- Clinical Microbiology:
- Identifies pathogenic streptococci from clinical specimens to aid in diagnostics.
- Research Microbiology:
- Supports studies in microbial differentiation and metabolic pathways.
- Industrial Microbiology:
- Ensures quality control in pharmaceutical and food microbiology.
Kit Contents:
Ref. | 72560 | 79560 |
---|
STREPTOSYSTEM 12R | 20 systems (40 tests) | 4 systems (8 tests) |
Strepto Broth Vials | 40 (5.0 mL each) | 8 (5.0 mL each) |
PYR-Disc Cartridge | 2 cartridges | 1 cartridge |
PYR Reagent | 1 vial (5.0 mL) | 1 vial (5.0 mL) |
Ninhydrin Reagent | 1 vial (5.0 mL) | 1 vial (5.0 mL) |
Biochemical Reactions:
Well | Reaction | Positive Reaction | Negative Reaction |
---|
1-VP | Voges-Proskauer Test | Pink-Red | Yellow |
2-IPP | Hippurate Hydrolysis | Blue-Violet | Colorless |
3-ESC | Esculin Hydrolysis | Black-Brown | Yellow |
4-PYR | PYR Test | Pink-Fuchsia Disc | Light Pink Disc |
5-ONPG | ONPG Hydrolysis | Yellow | Colorless |
6-ADC | Arginine Decarboxylation | Red | Yellow-Orange |
7-RIB | Ribose Fermentation | Yellow-Orange | Red |
8-ARA | Arabinose Fermentation | Yellow-Orange | Red |
9-MAN | Mannitol Fermentation | Yellow-Orange | Red |
10-SOR | Sorbitol Fermentation | Yellow-Orange | Red |
11-TRE | Trehalose Fermentation | Yellow-Orange | Red |
12-RAF | Raffinose Fermentation | Yellow-Orange | Red |
Procedure:
- Preparation of Bacterial Suspension:
- Isolate the microorganism from an agar plate and suspend in Strepto Broth.
- Inoculate System:
- Transfer 0.2 mL of bacterial suspension into each well.
- Add PYR disc to well 4-PYR.
- Overlay well 6-ADC with vaseline oil.
- Incubation:
- Cover the system and incubate at 36 ± 1°C for 18–24 hours.
- Interpret Results:
- Add reagents to specific wells as needed (e.g., VP, IPP, and PYR tests).
- Record color changes and calculate the 4-digit numerical code using the provided instructions.
Numerical Code Formation:
- Tests are grouped into four groups of three:
- Group 1: VP, IPP, ESC
- Group 2: PYR, ONPG, ADC
- Group 3: RIB, ARA, MAN
- Group 4: SOR, TRE, RAF
- Assign values (1, 2, or 4) based on positive tests and sum values in each group to form a 4-digit code.
- Use the code table or online software to identify the microorganism.
Quality Control:
- Control Strains:
- Streptococcus pyogenes ATCC® 19615
- Streptococcus pneumoniae ATCC® 6303
- Enterococcus faecalis ATCC® 19433
- Streptococcus agalactiae ATCC® 13813
- Expected Reactions:
- Positive and negative control strains ensure test accuracy.
Storage and Handling:
- Store at 2–8°C in the original packaging.
- Avoid excessive temperature fluctuations.
- Discard systems if deterioration or contamination is evident.
Specifications:
Feature | Details |
---|
Description | 24-well system for streptococci identification |
Quantity | 40 tests per kit |
Incubation Time | 18–24 hours |
Storage Conditions | 2–8°C |
Advantages:
- Comprehensive and Accurate:
- Identifies a wide range of streptococcal species with clinical relevance.
- Time-Efficient:
- Provides results in under 24 hours, expediting diagnostics.
- Easy to Use:
- Pre-filled wells and clear instructions simplify the workflow.
- Validated Performance:
- Rigorous quality control ensures consistent and reliable results.
Product Details:
Product Name | Ref. | Quantity |
---|
Streptosystem 12R | 72560 | 40 tests/kit |
The Liofilchem® Streptosystem 12R is an indispensable tool for clinical and research microbiology laboratories, offering comprehensive identification of streptococcal species with precision and efficiency. Its pre-filled, ready-to-use design and rapid workflow make it a trusted choice for bacterial identification.
https://www.labmartgh.com/shop/product/72560-liofilchem-r-strepto-system-12r-40-tests-29035
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