The CHEMetrics R-9510 Sulfide CHEMets® Refill is designed for use with the K-9510 Visual Test Kit and utilizes the Methylene Blue method for the accurate analysis of sulfide in water. This refill includes 30 self-filling ampoules, securely packaged in cardboard trays and a protective box for reliable handling and storage. The R-9510 refill is compatible with both the C-9501 Low Range Sulfide Comparator and the C-9510 High Range Sulfide Comparator, ensuring broad testing capability. Note: R-9510 replaces the discontinued R-9510A, R-9510B, R-9510C, and R-9510D.