The K-6903 Nitrate Vacu-Vials® Kit by CHEMetrics is a powerful tool for measuring nitrate levels in water samples ranging from 0 to 1.50 ppm. Designed for accuracy, ease of use, and operator safety, this self-contained test kit is ideal for environmental monitoring, water treatment, laboratory testing, and compliance with drinking water standards.
What Makes the K-6903 Kit Unique?
Unlike traditional test kits that rely on visual comparison, the K-6903 uses Vacu-vials® self-filling ampoules that allow for instrumental analysis with CHEMetrics Direct-Readout Photometers or any spectrophotometer that accepts 13 mm diameter round cells. The result: quick, reliable, and highly accurate readings with minimal user interpretation.
Why Use Vacu-Vials®?
- Fast & Simple: Get results in minutes with a few easy steps—no pipettes, no mixing of reagents, no guesswork.
- Minimized Error: Self-filling ampoules reduce handling errors and eliminate reagent preparation.
- Sealed for Safety: Reagents are vacuum-sealed and stored in the ampoule tips, minimizing exposure to chemicals.
- Instrument-Based Accuracy: Results are read by a photometer, ensuring consistent and objective measurements.
Nitrate in Water: Why It Matters
Nitrate (NO₃⁻) is the most oxidized form of nitrogen, commonly found in natural waters as a result of biological decomposition or wastewater treatment processes. Elevated nitrate levels in drinking water can pose serious health risks, particularly for infants. The U.S. EPA sets a Maximum Contaminant Level (MCL) at 10 ppm nitrate-nitrogen (NO₃-N) for drinking water.
The K-6903 kit, with its low detection range, is ideal for detecting trace amounts of nitrate in:
- Drinking water
- Surface waters
- Industrial effluents
- Wastewater discharges
How It Works: Cadmium Reduction Method
The K-6903 uses the Cadmium Reduction Method. Here’s a simplified breakdown:
- Nitrate is reduced to nitrite using cadmium foil.
- Nitrite is measured colorimetrically, giving you a result that reflects the original nitrate concentration.
- Results are expressed as ppm (mg/L) NO₃-N or NO₃.
Note: Presence of nitrite in the sample will interfere with this test.
What’s Included in the K-6903 Kit?
- 30 self-filling Vacu-vial® ampoules
- 30 cadmium foil packs
- 25 mL sample cup
- Reaction tube with secure lid
- Instruction manual
Photometer or spectrophotometer sold separately
Step-by-Step Testing Instructions
- Fill the reaction tube with 15 mL of sample.
- Add one cadmium foil pack, cap the tube, and shake vigorously for 3 minutes. Let sit for 2 minutes.
- Transfer the reacted sample into the sample cup (avoid cadmium particles).
- Snap the Vacu-vial ampoule tip in the sample cup; it fills automatically.
- Mix the ampoule by tilting it gently; let it sit for 10 minutes.
- Read the result using a Direct-Readout Photometer or compatible spectrophotometer.
Safety Note (Prop 65 Warning)
This kit contains cadmium, a chemical known to the State of California to cause cancer and reproductive harm. Handle with care and dispose of used materials responsibly. For more information, visit www.P65Warnings.ca.gov.
Conclusion
The CHEMetrics K-6903 Nitrate Vacu-Vials® Kit delivers fast, safe, and accurate nitrate testing for a wide range of water quality applications. With simple operation and reliable results, it’s a valuable tool for any water testing professional.
You can find this product here: https://www.gas-sensing.com/k-6903.html
