silica

More than 60%

magnesia

30%

Hydrochloric acid soluble content

Less than 2.0%

Water soluble content

Less than 0.1%

ph

Litmus paper presents neutral

Water soluble iron

Not instant blue now

arsenic

< 2 PPM

Lead (pb)

< 10 parts per million (PPM)

Ignition loss (800 degrees c)

Less than 5%

White degree

More than 90%

asbestos

X-ray diffraction (XRD) analysis may not be found

bacteria

Total bacteria < 500 a/g, mold < 100 a/g, pathogenic bacteria can not checked out.

Fineness: 325 mesh by 98% above, or by purchasing and selling both sides agreed.

Packing: paper bag, woven bag, net weight 25 kg.

USES: medicine, cosmetics, food, etc.

Note: this technical parameters are for reference only, specific parameters will be subject to supply and demand both sides agreed.