Items Standards Identification IR & NMR spectrum Appearance White Crystals or Crystaler Specific rotation -29.0~ -32.0° Water Content 5.5~9.5 Residue on ignition â¤0.5% Residue Acetone & Ethanolâ¤0.5% CN-Not detectable L-Carnitine98.0~102.0% Heavy metal â¤10ppm Chloride (By CL) â¤0.4% Leadâ¤3ppm Cadmium (Cd) â¤1ppm Mercury (Hg)â¤0.1ppm Arsenic â¤1ppm TPC < 1000Cfu/g Yeast & Mold < 100Cfu/g E.Coli Neg Salmonella Neg. In Reference to your urgency for the use of our products its advisable to follow the info viaor mail