R-7404 is the refill kit for the K-7404 dissolved ozone vacuvials are an accurate and inexpensive way to measure your dissolved ozone levels. Their range is up to 3.0 ppm, but can detect higher levels if the proper sample-dilution instructions are followed. 30 colorimetric tubes included for instant ozone detection. Replacement vials and activator solution are available for purchase online.
- Low cost accuracy.
- Industry-proven chemistry.
- Useful for standalone ozone sampling -OR-
- Useful for calibration of ozone process monitors.
- Wide range.