Factory price Colloidal silicon dioxide

Appearance White or almost white, light, fine, amorphous powder, with a particle size of about 15nm Conforms
Identification A deep yellow color is produced.
A greenish blue spot is produced. Conforms
After ignition, it gives the reaction of silicates. Conforms
pH 3.5 - 5.5 4.1
Loss on Ignition,% ≤2.0 0.6
Arsenic,ppm < 8 < 8
Loss on Drying,% ≤ 2.5 0.4
Chlorides,ppm ≤250 <250
Assay,% 99.0 - 100.5 99.9
Specific Surface Area,m²/g 200 ± 20 217
Tap Density,g/L 40 - 60 45
Heavy Metal,ppm ≤25 ≤25
Total aerobic bacteria CFU/g ≤1000 < 20
Yeasts and Moulds,CFU/g ≤10 <10
Escherichia coli ND ND
Conclusion The above certificate of analysis is in compliance with USP-NF38 and EP 10.0 standard.

Company Introduction: Founded in 2008, East Chemsources Limited is a professional manufacturer of supplier in food and beverage, pharmaceuticals, cosmetics and other industries. Through more than four years development, our company has developed from single product at first to providing solution to finished products now, is committed to providing solutions for success and growth through long term relationships. 
Currently, our products have been exported to more than 50 countries all over the world. Our service is accomplished by providing good quality solution that matches the specifications of our clients at competitive price. Our products will derive from trusted sources and arrive to our clients in time and well arranged manner, be creating the greatest benefits for our customers. 
Whether your project is large or small, whether it needs one, several or all of our disciplines you will find our level of dedication to a quality result to be the same. We are looking forward to your sincere cooperation and participation.
Our Service:
1. High quality with the competitive price.
2. Professional and experienced business services.
3. Prompt delivery within 2-3 weeks (1 weeks is available for ready stock)
4. Quick response to client inquiries
5. Free samples and shipping documents in accordance with the regulations of different countries
6. Adequate product inventory