Why must Coliform be controlled in bottled water?
- In the bottled drinking water industry, Coliform testing in drinking water is a mandatory parameter for assessing microbiological safety.
👉 The appearance of Coliform shows:
- The water source may be contaminated
- The production process does not ensure hygiene
- A risk to consumer health
- Therefore, applying an effective Coliform control solution for bottled water is a matter of survival for the business.
🧪 The common Coliform testing methods today
Today, businesses usually use two main methods:
1. The membrane filtration method
The microbiological membrane filtration technique works by:
- Filtering the water sample through a 0.45 µm membrane
- Retaining microorganisms on the membrane
- Incubating on culture medium
👉 Advantages:
- High accuracy
- Suited to water samples with low microbial density
👉 Disadvantages:
- Many handling steps
- Takes time
- Demands high technique

2. Using Compact Dry EC and Compact Dry CF plates
Compact Dry EC and Compact Dry CF are rapid microbiological testing solutions used widely in the drinking water industry.


👉 Compact Dry EC:
- Detects E. coli and Coliform
- Distinguishes them by colony color
👉 Compact Dry CF:
- Used to test for total Coliform
⚡ The advantages of using Compact Dry in drinking water testing
Compared with the traditional method, Compact Dry EC and CF bring many benefits:
- No medium preparation needed
- No agar pouring needed
- A simple workflow: drop the sample – incubate – read the result
- Fewer handling mistakes
- Clear, easy-to-read results
👉 This is the optimal solution for rapid drinking water microbiological testing
The optimal combination solution for businesses
👉 In practice, many businesses apply:
- Membrane filtration → for scheduled standard testing
- Compact Dry EC/CF → for rapid daily checks
👉 This helps to:
- Assure accuracy
- Speed up testing
- Optimize operating costs
When should Compact Dry EC & Compact Dry CF be used?
Compact Dry EC and Compact Dry CF are especially suitable when:
- Rapid testing in the factory is needed
- Incoming/outgoing water quality is checked
- Continuous control during production is required
The benefits of optimized Coliform control
Businesses that apply the right solution will:
- Reduce the risk of microbial contamination
- Meet food safety standards
- Avoid returned or recalled products
- Strengthen the brand's reputation
Controlling Coliform in bottled water is mandatory to guarantee product quality. Combining:
- The membrane filtration method
- Compact Dry EC and Compact Dry CF plates
is the optimal solution that helps a business:
- Test quickly
- Guarantee accuracy
- Save costs
📞 Contact us for solution advice
If you are looking for an effective Coliform testing solution for drinking water, contact us to:
- Get advice on choosing the right method
- Receive detailed usage instructions
- See a live product demo

