Water test reagent sera Ammonium/ammonia-Test NH4/NH3 Ammonia NH3 NH4 0.015 L

The sera Ammonium/ammonia-Test (NH4/NH3) is a water test reagent for measuring ammonium and ammonia concentrations in fresh and marine water. Supplied in a 0.015 L reagent bottle and manufactured in Germany, the test determines the combined concentration of NH4 and NH3; the actual ammonia (NH3) fraction can be calculated from the measured total and the water pH using the included chart. The reagent is suitable for routine monitoring of aquarium and pond water and is sufficient for approximately 60 measurements.

Advantages

This sera reagent provides a compact, purpose-built solution for measuring total ammonium/ammonia. It supports both freshwater and marine use, is produced in Germany to established quality standards, and includes a conversion chart to interpret NH3 levels from total measurements and pH. The small 0.015 L volume is adequate for about 60 tests, allowing regular checks without large storage needs.

Suitable for

• Routine monitoring of aquarium water
• Checking pond water for ammonium/ammonia
• Assessing water quality after stocking or feeding
• Verifying the effectiveness of biological or chemical treatments

Key specifications

• Analyte: total ammonium/ammonia (NH4/NH3)
• Reagent volume: 0.015 L
• Usage capacity: approximately 60 measurements
• Intended media: fresh and marine water
• Country of manufacture: Germany

How to use

Collect a sample of aquarium or pond water following the test kit instructions supplied with the sera reagent. Add the reagent in the prescribed amount to the sample, observe the colour change or measurement result as indicated by the test procedure, and compare results to the included colour chart. Use the provided pH chart to calculate the proportion of toxic free ammonia (NH3) from the measured total ammonium/ammonia concentration (NH4/NH3). Follow safety and disposal instructions printed on the product label.

Usage recommendations

Measure ammonium/ammonia regularly after changes such as new fish introductions, increased feeding, or following treatment with chemical agents. In cases of elevated values, consider using appropriate sera corrective products for acute or lasting issues and perform partial water changes as required. Store the reagent in a cool, dark place and keep bottle tightly closed between uses.