Johnson Test Papers J-QUANT Nitrate 500, Available in 100 strips per pack. Used for the detection of Nitrate. It can be used in a wide range of industries from healthcare to water treatment. Available at World Lab Supplies.

Immerse the strip in the test sample. Shake the strip to remove the excess if necessary. After the stated wait time has taken place, compare the colour produced on the test strip with the colour on the tube to the determine the concentration. Standard pack are available as 100 strips in an aluminium tube sealed with a dessicant cap.