Reduce sample (riffle is suitable) to 100 g and place portion in sealed container for H20
determination. Immediately determine H20. Grind remainder to uniform fineness. (Weber mill
with screen 0.033-.040" [No. 18 or 20], Micro mill [Hosokawa Micron Powder Systems. Inc., 10
Chatham Rd, Summit, NJ 07901] with screen 1/25-1/16" [No. 18-No. 12], and Wiley mill with 1
mm [No. 18] screen give comparable fineness.) Since most materials lose moisture during
grinding, determine H20 on ground sample at same time sample is taken for crude fiber
determination.