Brass samples inspected for porosity -- 2

I need a proficient and experienced freelancer to inspect brass samples for porosity. The brass samples come in various sizes and shapes - mainly small tubes, pressurized or open. I would prefer microscopic analysis for the method of inspection and my acceptable level of porosity for the samples is no porosity. If you are an expert with brass components and have the resources to conduct microscopic analysis, please contact me. Quality assurance is my highest priority, so any experience you have in that field is a bonus. Only the most qualified candidates should apply. Thanks!