We strictly adhere international standards. We have a state of art testing facilities that includes computerized instruments like Spectrophotometer, Vibro Shaker, Automatic Muller, Automatic Film Applicator, Two roll mill with Hydrolic Press, Bead Mill, Triple Roll Mill.
All tests are carried- out, documented & recorded as per international norms. Strict guidelines of GMP (Good Manufacturing Practice) are followed at every stage of process to ensure zero defect products.
At ophtha dyes, 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:
Raw Materials Analysis:
- Purity – checked using the volumetric analysis.
- Dye – Prepared using the laboratory scale.
Parameters: The different parameters, which are checked during production are:
- pH
- Temperature
- Volume Control
- Time
Tests Conducted:
- Coupling Test
- Diazotisation Test
- Cynuration Test
- Condensation Test
- Salt Content Analysis – Salt free solution after R.O. process
Spray Dried Powder – Standardization and quality assurance tests:
Physical Aspect Appearance:
- Anti-dusting
- Solubility
- pH
- Filtration Test
Strength / Tone:
Using application test
Colour Computer Output:
- Reflectance Value
- Transmittance Value
- Dispersion Test – for disperse dyes
- Draw / down test – for pigment powders
Application Test:
As per requirement
After Packaging:
- After packing drum samples evaluation on random of 15 to 20% of weight size.
- Conditions of drums / cartons marketing on drums.