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4.  Target Concentration 

T 

# Target Concentration

chemistry 

The specific strength—commonly expressed in PPM—that a disinfectant solution is prepared to achieve for a given application.

## Definition

Target concentration is the intended dose of active ingredient in a prepared disinfectant solution. For chlorine-based disinfectants it is usually expressed in parts per million (PPM) of available chlorine. The correct target depends on the surface, the level of soiling, the pathogens of concern and applicable guidelines—there is no single universal PPM.

## Why it matters

Under-dilution weakens disinfection; over-dilution wastes chemical, increases odour, and may damage surfaces. Consistently hitting the target concentration is the goal of any professional dilution programme.

## Practical applications

Defined in standard operating procedures, dilution charts and digital PPM calculators used across healthcare, food and facilities hygiene.

## Related terms

[Active Ingredient](/knowledge-center/glossary/active-ingredient)[Air Particle Count](/knowledge-center/glossary/air-particle-count)[Bleach](/knowledge-center/glossary/bleach)[Chlorine Concentration](/knowledge-center/glossary/chlorine-concentration)[Chlorine Demand](/knowledge-center/glossary/chlorine-demand)[Chlorine-Releasing Agent](/knowledge-center/glossary/chlorine-releasing-agent)

## Referenced in

-   [Disinfectant Tablet Dilution: How to Calculate the Right Concentration](/knowledge-center/articles/disinfectant-tablet-dilution-how-to-calculate-the-right-concentration)

## Need help applying this?

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