CHEMetrics R-7511 Dissolved Oxygen Reagents Refills

CHEMetrics R-7511 is a 30-ampoule ULR CHEMets refill for the K-7511 Visual Test Kit, designed to measure ultra-low range dissolved oxygen in water with the Rhodazine D method. Each self-filling ampoule contains about 1 mL of liquid reagent sealed inside, and the refill is compatible with CHEMetrics’ C-7511 dissolved oxygen comparator for reading results. It covers a 0–20 ppb (0–0.02 mg/L) range, making it suitable for critical monitoring in high-purity water systems such as boiler feedwater applications. The package includes ampoules organized in cardboard trays within a protective box, and this R-7511 refill is marketed specifically as the refill for the K-7511 ULR Dissolved Oxygen Visual Test Kit.