COMET8: Precision Antibiotic Screening in Milk—Simplified, Standardized, and Smart

28, Aug 2025

In the world of food safety, especially within the dairy industry, there’s zero margin for error when it comes to antibiotic residues. Manual microbial testing is still common, but it’s time-consuming, subjective, and prone to interpretation errors—especially when results hinge on detecting color changes that differ from person to person.

Enter COMET8—a revolutionary solution that automates, standardizes, and digitizes antibiotic testing in milk and other food matrices. Now available in Australia via Vendart, COMET8, used with Eclipse Farm 3G and Explorer 2.0 test kits, delivers objective, reproducible, and traceable results across multiple sample types—without needing trained lab technicians.

Common Challenges in Antibiotic Residue Testing

Let’s face it—manual microbial residue tests come with several issues:

Inconsistent interpretation of color changes by different readers

Timing issues—tests are often read too early or too late

Staff dependency—requires well-trained personnel, which isn’t always available

Delayed reporting—especially when tests are run in one location and decisions made in another

COMET8 solves these pain points with automation, objectivity, and digital connectivity.

What Is COMET8?

COMET8 is an automated, multi-sample reading device designed to interpret microbial inhibition tests for detecting more than 50 antibiotic residues in milk and other food products. It supports simultaneous testing of 8 samples, delivering:

Real-time analysis

Optimal timing of result capture

Automatic color interpretation

Immediate data transmission and archiving

The system’s advanced optics and color analysis algorithms eliminate human subjectivity and ensure reproducible, audit-ready results every time.

How It Works

COMET8 is used in conjunction with Eclipse Farm 3G or Explorer 2.0 kits, which are microbial growth inhibition assays based on Geobacillus stearothermophilus.

Prepare the test tubes by adding the sample (milk, meat extract, egg, or feed).

Insert up to 8 tubes into COMET8.

The system incubates and monitors bacterial growth.

If no antibiotics are present: the bacteria acidify the medium and the color changes from blue to yellow.

If antibiotics are present: growth is inhibited and the medium stays blue.

COMET8 reads and logs the result at the precise moment of inhibition, avoiding premature or delayed readings.

The system’s ability to identify intermediate color results ensures more accurate readings than any visual assessment.

 Key Features of COMET8

Feature Benefit
8-Sample Capacity Batch test multiple samples simultaneously
Automatic Incubation & Reading No need to manually monitor timing
Color Interpretation Objective detection with no human bias
Digital Result Delivery Sends results in real-time via Wi-Fi, Bluetooth, or 4G
Traceable Records Ensures compliance with food safety standards
Multi-Matrix Compatible Works with milk, meat, eggs, kidneys, and feed

Applications Across the Dairy & Food Chain

COMET8 is highly adaptable and supports food safety workflows in various environments:

On the Farm

Farmers can test milk directly at the source before dispatch

Helps prevent contaminated batches from entering the supply chain

Milk Collection Trucks

Screening during milk collection routes ensures only compliant milk is transported

Processing Plants

Quality control teams can perform high-throughput testing with minimal labor

Reduces risk of non-compliant batches reaching the market

Veterinary & Food Safety Labs

Simplifies routine screening of tissues (kidneys, meat) and feed samples

Ideal for government agencies monitoring residue compliance

The Value of Objectivity in Microbial Testing

One of the greatest advantages of COMET8 is its ability to eliminate subjective interpretation. Traditional visual assays are highly user-dependent—one technician might consider a tube yellow, while another sees it as borderline blue.

With COMET8:

Every sample is interpreted the same way

The system records the result at the optimal inhibition point, avoiding premature or late readings

All results are stored in a traceable digital format, making audits and investigations easier

Stay Compliant with International Standards

COMET8 aligns with:

European MRLs for antibiotic residues

Codex Alimentarius guidelines

FSANZ safety limits (Australia)

Its ability to objectively detect trace-level antibiotic residues helps ensure that food producers meet stringent compliance requirements with confidence.

Why Choose COMET8 from Vendart?

Vendart, a trusted Australian distributor of diagnostic and laboratory solutions, offers:

Local technical support and training

Rapid shipping and reliable stock availability

Assistance with system setup, validation, and maintenance

Access to test kits (Eclipse Farm 3G and Explorer 2.0) and accessories

With Vendart, you get more than just a device—you gain a partner committed to improving your food safety processes.

COMET8 is more than just a test reader—it’s a data-driven food safety solution


By automating the most sensitive parts of antibiotic residue screening—timing, interpretation, and result sharing—it transforms how dairy farms, processors, and regulators ensure compliance.

If you’re ready to stop guessing and start trusting your results, COMET8 is your next step toward standardized, objective, and efficient testing.

For Further Enquiry Contact: sales@vendart.com.au

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