Meets ansi/awwa b100-09, awwa standard for granular filter material Our filter media exceeded en12904 and awwa standard We are looking forward to receive your valuable enquires, for which; we assure you that they will be attended to, at the shortest period of time, with the utmost attention of our team of expertise, for the best services, and, competitive prices. All sizes according to en12904 are available, can customize sizes according to effective size and uniformity coefficient
