Inquiry (采购产品): Sieve analysis We recently replaced anthracite media in wastewater filters. We believe it is breaking down and would like to have it sieve tested (and tested for hardness if this is possible). Please send quote. We intend to sample using procedure outlined in "Filter Evaluation Procedures for Granular Media published by AWWA if this is acceptable. Thank you. **** Hidden Message ***** Kevin Cox 49047 Company: City of Dowagiac, MI E-mail: kcox@beanstalk.net **** Hidden Message ***** kcox@beanstalk.net