Precision Water Testing for Healthy Aquatic Life

Tetratest NO2 Nitrite Tests are professionally formulated liquid test kits designed to measure nitrite levels in your aquarium water with high accuracy. Nitrite (NO2) is a toxic intermediate in the nitrogen cycle and should ideally be undetectable in a healthy, biologically balanced tank.

This test detects early signs of biological filter failure or imbalance, helping you protect your fish from stress and disease. Ideal for both freshwater and marine setups.

Kit Contents:

• 2 x 10ml test reagents
• Test vial
• Color scale chart
• Step-by-step instructions

Features & Benefits:

• Simple liquid test format – 45 tests per kit
• Reliable results for proactive tank maintenance
• Detects nitrite levels down to 0.3 mg/L
• Made in Germany – ISO-quality assurance

Usage Guidelines:

• Test aquarium water weekly, especially in new setups
• Compare result with provided color scale chart
• Adjust filtration system or water changes as needed

Specifications:

• Quantity: 45 tests
• Country of Origin: Germany

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