Metals–Iron–Steel Requests

I would like to purchase White Fused Silica 44µm. The quantity is 1200Kg. in 25Kg. each bag. Before buying, I would like to get a sample (1-2Kg.) The White Fused Silica need to have batch No. and COA. We are not aloud to have inside the Fused Silica and corrosive material like Chloride.