Product Name: Underground Coal Mine Oxygen Self-Rescuer Model NO.: ZH30 Shape: Dust Mask Mask Type: Safe-Type Color: Red Material: Absorbent Cotton Mask Application: Gas Mask Model: Zh30 Protection Time: >30min Weight: 1.5kg Transport Package: as Required Specification: ISO&CE Origin: Shandong, China HS Code: 8419601100 Product Description Introduction of Underground Coal Mine Oxygen Self-rescuerZH Chemical oxygen self-rescuer is a self-rescuer that generates oxygen through a chemical reaction. None reusable. Mainly used in coal mines or ambient air pollution and toxic gases occurring hypoxic choking hazard, the site quickly worn to protect people fleeing the disaster area normal breathing.Oxygen generating process main reaction equation is: 2KO2+H2O→2KOH+1.5 O2+heat 2KOH+CO2→K2CO3+H2O+heatParameter of Underground Coal Mine Oxygen Self-rescuerItemZH30ZH45other models available;ZYX-30,ZYX-45,ZYX60,ZL60 etc.Protectiontime>30min>45minSuctionpressure≤1200Pa≤1200PaDimension140×90×175mm100×93×133mmWeight1.5kg2kgValidStorage5yearscarry3yearsPhotos ofUnderground Coal Mine Oxygen Self-rescuer