CST offers a hydrogen sulfide (H₂S) scrubber for several industrial lab and process applications where personal safety and equipment protection are important. As the scrubber is used, the active material within the scrubber will change from blue-green to black in color, indicating its useful life through a simple one step color conversion. The lifetime of our H₂S Scrubber depends on the volume of active material used, inlet concentration, and flow rate.