- That is why Compact Dry plates are being chosen by more and more QC, QA, and laboratory teams to replace the traditional agar-pouring method.
- But what lets one small plate carry out the whole microbiological culturing process without medium preparation,
- Let's look at the technology behind Compact Dry — from a single drop of sample to a microbiology result after just a few simple steps.
1. Dry culture media technology
The biggest difference of Shimadzu Compact Dry lies in using pre-prepared dry culture medium. In the traditional method, technicians must:
- Weigh the medium
- Dissolve it in water
- Adjust the pH
- Autoclave
- Pour agar plates
- Wait for setting
This whole process can take hours and carries many cross-contamination risks. With Compact Dry, all the medium components are alre
- Nutrients
- Selective agents
- Gelling agent
- Chromogenic indicator
The user only needs to drop the sample onto the plate and start the culturing process.
* Benefits
✔ Saves preparation time
✔ Eliminates medium preparation errors
✔ No autoclave needed
✔ Ensures uniformity between test runs
2. Intelligent sample self-diffusion mechanism
- After dropping 1 mL of sample onto the center of the plate, something special happens. Thanks to the special material structure inside Compact Dry, the sample au spreads evenly over the whole plate surface without needing to be spread with a spreader.
* Working principle
The capillary action system inside the plate helps:
- Absorb the sample quickly
- Distribute it uniformly
- Avoid concentrating microorganisms at one point
The result is:
- Clearly distributed colonies
- Easy to count
- Less variation between analyses
This is one of the reasons Compact Dry gives stable, highly repeatable results.
3. Self-gelling technology with no agar pouring
One of Compact Dry's proprietary technologies is the ability to self-form a gel on contact with the liquid sample. When the sample is absorbed into the plate:
- The dry medium starts dissolving.
- The gelling agent is activated.
- The culturing surface forms within seconds.
The whole process happens automatically without:
- Agar
- Heating
- Pouring plates
- Cooling
* Advantages
- Does not depend on technician skill
- A uniform gel surface
- Fewer handling errors
- Higher result reliability
This is precisely what makes Compact Dry the ideal solution for QC rooms with high sample volumes.
4. Chromogenic indicator system for fast result reading
- After incubation, target microorganisms develop into colonies with characteristic colors. Each Compact Dry plate type is engineered wi
* Example
- Compact Dry EC: all blue and blue-violet colonies are E.Coli. Red, pink colonies are Coliforms. All red, pink, blue, and blue-violet colonies are total Coliforms.
- Compact Dry CF: blue and blue-green colonies are Coliform
- Compact Dry TC: total aerobic bacteria: red
Thanks to this mechanism, technicians can:
- Observe directly with the naked eye
- Distinguish microbial groups quickly
- Shorten the result-reading time
5. From a drop of sample to the result in just 4 steps
- Step 1: Prepare the sample -> dilute following testing standards.
- Step 2: Drop the sample -> drop 1 mL of sample into the center of the Compact Dry plate.
- Step 3: Incubate -> incubate at the prescribed temperature and time.
- Step 4: Read the result -> count colonies and identify the microorganisms by their characteristic colors.
The whole process happens without: pouring plates, spreading samples, preparing medium, or sterilizing medium.
Why is Compact Dry technology chosen by many factories?
Compared with the traditional culturing method, Compact Dry provides many benefits:
- Handling time cut by up to 70%
- Sponsorship of culture-medium costs
- No autoclave needed
- Less laboratory space
- Fewer human errors
- Easy training of new staff
- Stable, reliable results
This is why more and more food, beverage, bottled water, seafood, and animal feed businesses are switching to use
Conclusion
- Behind the simplicity of a Compact Dry plate is the combination of several advanced technologies: dry medium, sample self-diffusion, self-gelling, and an intelligent chromogenic indicator system.
- Thanks to these technologies, Compact Dry makes microbiological testing faster, easier, and cheaper while still mee
- If your business is looking for a rapid microbiology testing solution, Compact Dry plates are a choice worth considering to raise laboratory efficiency.