The Ammonia Nitrogen Pack Test provides rapid, field-portable colorimetric analysis of ammonia nitrogen concentrations in water samples using pre-packaged reagent tubes. This single-use test system employs the established Nessler colorimetric method, delivering quantitative ammonia nitrogen measurements in 3-5 minutes without requiring laboratory infrastructure or specialized training.

Each sealed reagent tube contains standardized Nessler reagent formulation optimized for ammonia nitrogen determination across typical environmental and industrial water matrices. The test procedure involves sample aspiration into the reagent tube, brief mixing, and colorimetric comparison against a calibrated color chart for concentration determination. The aluminum foil-sealed tubes provide 18-month shelf stability under ambient storage conditions.

How It Works

The Ammonia Nitrogen Pack Test utilizes the Nessler colorimetric method, where ammonia in alkaline solution reacts with Nessler's reagent (potassium tetraiodomercurate(II)) to form a yellow to brown colloidal complex. The intensity of the color development is directly proportional to the ammonia nitrogen concentration, following Beer's law principles for spectrophotometric analysis.

Upon sample introduction, free ammonia and ammonium ions present in the water sample react with the pre-loaded Nessler reagent to form the characteristic iodo-mercury complex. The reaction proceeds rapidly at ambient temperature, typically reaching maximum color development within 3-5 minutes. The resulting coloration is compared against a standardized colorimetric chart calibrated to known ammonia nitrogen concentrations.

The sealed tube design eliminates reagent preparation steps and minimizes exposure to mercury-containing compounds. Each tube contains optimized reagent concentrations and pH conditions to maximize sensitivity while minimizing common interferences from calcium and magnesium ions that can affect traditional Nessler determinations.

Features & Benefits

Pre-sealed reagent tubes

Eliminates reagent preparation steps and reduces exposure to mercury-containing Nessler compounds while ensuring consistent reagent concentrations.

3-5 minute reaction time

Enables rapid field analysis without lengthy incubation periods, supporting real-time decision making in environmental monitoring workflows.

18-month shelf stability

Aluminum foil sealing maintains reagent integrity under ambient storage conditions, reducing inventory turnover and waste from expired reagents.

No external equipment required

Self-contained test system operates without spectrophotometers, pipettes, or laboratory infrastructure, enabling remote field testing.

Standardized colorimetric reference

Calibrated color chart provides quantitative concentration determination without requiring instrument calibration procedures.

PE plastic tube construction

Lightweight, break-resistant tubes reduce shipping costs and handling risks during field sampling campaigns.

Half-tube sample volume

Minimizes sample requirements while maintaining adequate reaction volumes for reliable color development and reading.

Feature	This Product	Typical Alternative	Advantage
Test Format	Pre-sealed reagent tubes with integrated sampling	Laboratory reagent preparation and glassware setup required	Eliminates reagent preparation steps and reduces potential for contamination or measurement errors in field conditions.
Reaction Time	3-5 minute colorimetric development	Similar reaction kinetics but may require longer stabilization periods	Rapid results support real-time sampling decisions and efficient field survey workflows.
Equipment Requirements	No external instrumentation needed	Requires spectrophotometer, pipettes, and volumetric glassware	Self-contained system enables testing in remote locations without laboratory infrastructure or power requirements.
Shelf Stability	18-month ambient temperature storage	Reagent solutions typically require shorter storage periods and refrigeration	Extended shelf life reduces inventory management requirements and reagent waste from expiration.
Sample Volume	Half-tube volume requirement	Varies by protocol but often requires larger sample volumes	Minimizes sample collection requirements while maintaining adequate reaction volumes for reliable analysis.

This ammonia nitrogen test system provides field-portable colorimetric analysis with simplified procedures and extended shelf stability. The pre-sealed tube format eliminates reagent preparation while maintaining the established Nessler method chemistry for quantitative ammonia nitrogen determination.