1416100 Nitrogen/Nitrate Color Disc Test Kit, Model NI-14

Nitrogen/Nitrate Color Disc Test Set measures nitrate-nitrogen in the range of 0 - 1 mg/L NO₃⁻-N and 0 - 10 mg/L NO₃⁻-N in water samples. Color Disc/ Cadmium reduction method is used to evaluate nitrate-nitrogen concentration. Model NI-14 may be used for 50 samples. The smallest increments are 0.02 and 0.2 mg/L NO₃⁻-N.

NI-14 Test Set includes:

• NitraVer© 6 Nitrate Reagent Powder Pillows (p/n 1412099)
• NitriVer® 3 Nitrite Reagent Powder Pillows (p/n 1407899)
• Nitrate Nitrogen Color Disc, indoor light, 0-1 mg/L and 0-10 mg/L (p/n 9264600)
• Nitrate Nitrogen Color Disc, outdoor light, 0-1 mg/L and 0-10 mg/L (p/n 9267900)
• Color Comparator Box (p/n 173200)
• 18 mm Plastic Viewing Tubes, with caps (p/n 4660004)
• Plastic Dropper (p/n 608000)

Procedure for NO₃⁻-N evaluation

Before you start take into account the following:

• The required sample temperature is between 20 and 25 °C (69 - 77 °F). 
• This test set is not applicable to samples with high chloride concentration.
• Multiply the testing results by 4.4 to record the value as mg/L NO₃⁻.

Testing procedure

1. For nitrate-nitrogen analysis in the range of 0 - 1 mg/L NO₃⁻-N, add 5 mL of sample into the first tube, install the cap and shake. Empty the content of the tube.
2. Repeat the first step.
3. Fill the first tube to the 5 mL line with sample and pour the content of NitraVer 6 Nitrate Reagent Powder Pillow. Close the tube and shake for 3 minutes.
4. After 30 seconds, transfer the solution to the second tube and add NitriVer 3 Nitrite Reagent Powder Pillow. Place the cap on the tube and shake for 30 seconds.
5. Wait 10 minutes. Evaluate the testing results within 20 minutes.
6. Insert the second tube into the right opening of the color comparator box.
7. Rinse the first tube and add 5 mL of sample.
8. While keeping the color comparator box in front of the light, rotate the disk to identify the color.
9. Analyze the testing results in mg/L in the scale window.

Read the instructions for additional information regarding nitrate-nitrogen determination in the range of 0 - 10 mg/L NO₃⁻-N.