Fully automatic microbial petri dish spiral inoculator

DW-L2000 typeFully automatic microbial petri dish spiral inoculatorIt is an instrument that automatically inoculates samples at a decreasing ratio based on the Archimedes' spiral principle; It can achieve standardized generation of a large number of single bacterial colonies, facilitating subsequent experimental needs such as colony counting, colony separation and purification. It is widely used in any microbiology laboratory such as food, cosmetics, and pharmaceutical laboratories.

Product Introduction

The reproducibility of microbiological research results largely depends on excellent sample preparation.

DW-L2000 typeFully automatic microbial petri dish spiral inoculatorIt is an instrument that automatically inoculates samples at a decreasing ratio based on the Archimedes' spiral principle; It can achieve standardized generation of a large number of single bacterial colonies, facilitating subsequent experimental needs such as colony counting, colony separation and purification. It is widely used in any microbiology laboratory such as food, cosmetics, and pharmaceutical laboratories.

In the bacterial coating inoculation experiment, DW-L2000 can achieve automatic isolation and inoculation of single colonies of microorganisms or pathogenic bacteria on the surface of Petri dishes; In bacterial counting experiments, using DW-L2000 can reduce experimental costs, save manual operation time, reduce the use of consumables, and increase the efficiency of microbiology laboratories.

Product advantages

1. Aseptic assurance: The micro sampling head can achieve true aseptic sampling. Because there is no need to use disinfectants, any possible false negative results caused by residual disinfectants can be eliminated.

2. Comprehensive validation: Spiral inoculation method is a validated microbiological method, see: International ISO 7218/, Chinese SN/T 2098-2008, FDA-BAM Ch.3.

3. Excellent accuracy: Controlled by a reliable microprocessor, the stepper motor regulates the release of inoculum solution from the high-precision micro sampling head.

4. Rapid vaccination: using a disposable sampling head, without cross contamination; Therefore, there is no need for cleaning, disinfection, and sterilization time between two inoculation trials, and the single inoculation time is less than 30 seconds.

Spiral vaccination example:

Spiral inoculation and counting: covering a wide range of concentration gradients:

Technical specifications

1. System purpose:Fully automatic microbial petri dish spiral inoculatorIt can be applied to bacterial counting, rapid isolation of single colonies based on the spiral principle, and antimicrobial sensitivity testing (AST) in any microbiology laboratory such as food, cosmetics, and pharmaceutical laboratories.

2. System principle: Based on the Archimedes' spiral principle, microbial samples are inoculated onto a plate in a logarithmic spiral pattern, and single colony automatic separation and inoculation are achieved on the surface of a Petri dish. After single colony isolation and inoculation, the colonies are distributed on a spiral trajectory and become increasingly sparse as the radius increases. According to the rule, a spiral counting grid is used to count the colonies on the petri dish from the outer periphery to the center, in order to obtain the number of microorganisms in the sample.

3. Motion control: a stepper motor controlled by three microprocessors

4. Total time of sample addition cycle: 30 seconds (using a one-time micro sample addition head, without the need for disinfection and sterilization between two experiments)

5. Vaccination mode: Select the pre stored vaccination menu on the touch screen; Contains 22 inoculation modes for 90mm culture dishes, including single colony isolation inoculation mode and Kirby Bauer antibacterial testing mode.

6. Single colony isolation inoculation mode: 10 ^ 6 standard bacterial solution, which does not require dilution, achieving rapid isolation and inoculation of single colonies based on the spiral principle.

7. Antibacterial testing mode: Supports Kirby Bauer assay required for antimicrobial susceptibility testing (AST).

8. Sample addition speed: maximum 50 μ l/second

9. Minimum liquid discharge volume: The minimum liquid discharge volume per step is less than 10 nanoliters

10. Sample repeatability: over 95%

11. System calibration: RS232 interface, external balance for system calibration

12. Compliant with standards: International ISO 7218 standard, Chinese SN/T 2098-2008 standard, FDA-BAM Ch.3 standard.

13. System configuration:Fully automatic microbial petri dish spiral inoculator1 set, 1000 micro sample heads, 1000 sample beakers, and 1 spiral counting grid card.