Shearing ratio: 6.5 min Particle size: 200mesh 1% solution viscosity: 1450cps min Arsenic: 3ppm max Lead: 5ppm max Heavy metals: 10ppm max Total plate count: 2000cfu/g max Moulds & yeasts: 100cfu/g max Salmonella: negative E.coli: negative We export Xanthan gum for many years, the quality is steady and reliable. We can also supply industrial grade xanthan gum, oil drilling & exploitation grade xanthan gum, pharmaceutical & fine chemical grade xanthan gum. We are your best supplier on this line.