There is river sand in rapeseed meal

For some time, there has been a common problem in the rapeseed meal imported by the company. Microscopic examination (10X) found white crystals. After screening CP, ASH, etc., it was considered not non-protein N, but most likely river sand. After tasting it in his mouth, he was even more certain. Manufacturers can not be the same adulteration ah, is not the source of rapeseed manufacturers mixed with river sand it... You guys, have you ever met anyone? -------------------------------------- Sometimes there is such a situation in rapeseed meal, but if it is obvious, it is deliberately adulterated. In general, a small amount of sand may be used by manufacturers to adjust ash, and some people explain it this way. A little hard to believe. -------------------------------------- It may be that the rapeseed is brought into the sand when harvesting---------------------------------------------------------------------------- Hehe, it's hard to make feed these days. Ha ha. -------------------------------------- Hehe, I also found this kind of situation. I suspect it is sand, but I haven't tasted it yet. I'm not sure. -------------------------------------- We here admixed river sand situation is too common, ash determination boss about 10%, do not know simple deduction weight can buckle it?