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JBL NO2 Test
Recommended maximum level: 0.1 mg / l nitrite in freshwater.
For approximately 50 probe measurements.
For fresh and marine water.
Measuring range from 0.025 to 1.0 mg / l nitrite.
Colour scale with 8 colors from yellow to pink.
Comparative laboratory system compares bleaching water.
It includes syringe to measure amount of water.