The slight colour it does have is because of Rayleigh scattering of the shorter wavelengths of visible light from the nano-sized dendritic framework. This leads to it to appear smoky blue towards dark backgrounds and yellowish against bright backgrounds. Store solutions from modest business enterprise brand names sold in Amazon’s https://andymmmjh.blogolenta.com/30578135/concrete-foaming-agent-things-to-know-before-you-buy