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Quality
At Xuzhou Dayang Chemical Co., Ltd, Quality is our specialty. Committed to achieve excellence in the quality of products and services, we take special care in ensuring the quality and performance of our products. The various stages of production are intermittently marked by different quality control tests to maintain the performance and stability.
The various tests and processes that we undertake to ensure the consistent quality and performance of our products are:
1)Raw Materials Analysis:
Purity - checked using the volumetric analysis.
Dye - Prepared using the laboratory scale.
2)Parameters:
The different parameters, which are checked during production are:
pH
Temperature
Volume Control
Time
3)Tests Conducted:
Coupling Test
Diazotisation Test
Cynuration Test
Condensation Test
Salt Content Analysis - Salt free solution after R.O. process
4)Spray Dried Powder - Standardization and quality assurance tests:
Physical Aspect Appearance:
Anti-dusting
Solubility
pH
Filtration Test
5)Strength / Tone:
Using application test
6)Colour Computer Output:
Reflectance Value
Transmittance Value
Dispersion Test - for disperse dyes
Draw / down test - for pigment powders
7)Application Test:
As per requirement
8)After Packaging:
After packing drum samples evaluation on random of 15 to 20% of weight size.
Conditions of drums / cartons marketing on drums.
