degrees of purity like "technical", "pure", "puriss" or "Ph. Eur." play a decisive role in the assessment of chemicals.

👉 In this article you will learn:

• what the individual degrees of purity mean
• how they differ
• What you should look out for when choosing

👉 Basics of CDS: What is CDS (chlorine dioxide solution)?

Why are degrees of purity important?

The purity of a chemical influences its composition and possible secondary constituents.

Depending on the application, this can be crucial - especially for precise or analytical requirements.

Important: The manufacturer's specific specifications are always decisive.

The most important degrees of purity at a glance

Technical

• Large-scale production
• Possible contamination
• Deviations in color or odor
• Suitable for technical applications

Pure (purum)

• Minimum content mostly ≥ 97 %
• Significantly lower impurities
• Suitable for laboratory and synthesis

Cleanest

• Very high purity
• Foreign substances hardly detectable
• Suitable for analytical applications

Ph. Eur.

• Standard of the European Pharmacopoeia
• Very strict quality requirements
• for pharmaceutical applications

Important note on comparability

Designations such as "pure" or "puriss" are not fully standardized.

• Manufacturers define the exact quality
• Products can differ
• Technical data sheets are crucial

Food quality vs. chemical purity

Food quality is often perceived as particularly pure - but this is not always correct.

• "Purest" and "Ph. Eur." are often more strictly defined
• Food quality allows certain tolerances

What does this mean for CDS?

With CDS the quality of the raw materials and the manufacturing process play a central role.

👉 More about concentration: CDS 3000 ppm - meaning simply explained

👉 Understanding differences: CDS vs. MMS - difference simply explained

Differences are particularly evident in:

• Purity
• By-products
• Stability

Conclusion

• Technical → Simple applications
• Pure → Standard laboratory
• Cleanest → Analytical precision
• Ph. Eur. → Highest pharmaceutical requirements

The right choice always depends on the intended use.

👉 Further basics: CDS Knowledge at a glance

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