Shelf life: The Vacu-vials kit included with this instrument has a shelf-life of 1 year.
• CHEMetrics® Ozone (indigo) Vacu-vials® vs. Hach® MR Ozone AccuVac® Ampuls
• CHEMetrics Ozone (indigo) Vacu-vials vs. Hach LR Ozone AccuVac Ampuls
• The Measurement of Dissolved Ozone
• The Measurement of Dissolved Ozone (Spanish)