Multiparametric test strip Aquarium

for water analysisfor environmental analysiswater hardness

Intended use
This product is designed for rapid field and on-site assessment of water quality in aquaculture systems and aquaria. It is also suitable for general water quality checks on drinking water sources, wells, surface water, pools and spas, hot springs, mineral water and sewage.

Product testing scope

• Nitrate + Nitrite (NO3- + NO2-): color steps corresponding to 0, 10, 25, 50, 100, 250, 500 mg/L (reported as mg/L).
• Nitrite (NO2-): color steps 0, 1, 5, 10, 25, 50, 100 mg/L.
• Residual Chlorine (Cl2): color steps 0, 0.5, 1, 3, 5, 10, 25, 50 mg/L.
• Total Hardness (GH): degree steps and mg/L mapping (examples: 0, <6°/7°/14°/21° or corresponding 0, 100, 125, 250, 375 mg/L depending on table).
• Carbonate hardness (KH): degree steps and mg/L mapping (examples: 0, 3°/6°/10°/15°/20° or corresponding 0, 53.5, 107, 180, 270, 360 mg/L).
• pH: color steps at 6.4, 6.8, 7.2, 7.6, 8.0, 8.4.

Reagent area information

• Nitrogen compounds in aquaculture water decompose in stages: organic nitrogen → ammonium/ammonia → nitrite → nitrate.
• Ammonia (NH3) and ammonium (NH4+) balance depends on pH: high pH favors toxic ammonia formation.
• Nitrite is toxic to fish; elevated nitrite or nitrate indicates a disturbed biological balance and requires corrective action (partial water change, investigation of causes).
• Compare strip color to the reference chart to estimate concentration; transition colors indicate intermediate values.
• Recommended maximum nitrate for typical systems: do not exceed 25 mg/L unless species-specific tolerance is documented; aquatic plants absorb nitrates and help control levels.

Residual Chlorine
Tap water commonly contains free chlorine for disinfection. Even low residual chlorine concentrations are harmful to ornamental fish and cultured organisms. Remove chlorine by aeration, activated carbon filtration or appropriate dechlorination prior to introducing water to culture systems.

Total Hardness (GH)
Total hardness represents dissolved calcium and magnesium salts. Many species prefer moderate hardness, while some (e.g. East African cichlids) require high hardness. Interpret GH values relative to species requirements and adjust acclimation or water blending accordingly.

Carbonate hardness (KH)
KH indicates the buffering capacity of water and its ability to stabilize pH. Low KH (<3 dKH) can produce unstable pH readings and sudden pH shifts; stabilize KH before adjusting pH-sensitive systems.

pH
pH measures acidity/alkalinity where 7 is neutral. Optimal pH ranges are species-dependent. Avoid rapid pH changes; if KH is very low, correct carbonate hardness before relying on pH measurements.

Technical specifications

• Product type: 6-in-1 water test strips for aquaculture/aquarium and general water quality testing.
• Measured parameters: Nitrate (NO3-, reported as NO3- + NO2-), Nitrite (NO2-), Residual Chlorine (Cl2), Total Hardness (GH), Carbonate Hardness (KH), pH.
• Detection units: mg/L for chemical parameters; GH and KH displayed in degrees (dKH/°) with mg/L mapping shown on the reference chart.
• Example detection ranges: Nitrate+Nitrite up to 500 mg/L; Nitrite up to 100 mg/L; Residual Chlorine up to 50 mg/L; pH steps 6.4–8.4; GH/KH multiple degree steps per chart.
• Intended sample types: aquarium water, aquaculture water, drinking water and sources, well water, surface water, pools and spas, hot spring and mineral water, sewage.