| Test Parameter | Specification |
| Appearance | Off white aqueous dispersion free from signs of impurities |
| Whiteness Index on as is basis-using Konica Minolta Chromameter CR-400 | Not Less Than 80 |
| Identity (By IR) | Comforms with the standard spectrum of Zinc Pyrithione |
| Odour | Very Mild Characteristic odour |
| Assay (By Titrimetric Method) | 48.0 - 50.0 % w/w |
| Zinc Content (By Titrimetric Method) | 9.3 - 11.3 % w/w |
| pH (5% slurry in distilled water adjusted to pH 7) | 6.5 - 9.0 |
| Particle Size Distribution using Malvern particle size analyser Mastersizer 2000 with Hydro 2000 S | 90% particles less than 1 Micron |
| Iron (by AAS / ICP-OES) | Not More Than 10 ppm |
| Heavy Metals (by AAS / ICP-OES) | |
| Arsenic | Not More Than 3 ppm |
| Lead | Not More Than 2.5 ppm |
| Chromium | Not More Than 3 ppm |
| Cobalt | Not More Than 5 ppm |
| Nickel | Not More Than 1 ppm |
| Mercury total Heavy metals | Not More Than 20 ppm |
| Microbiological Test | |
| Total plate count/g (Including yeast and mold) | Not More Than 100 CFU/1g |
| E.coli/g | Absent in 1g |
| S.aureaus/g | Absent in 1g |
| Pseudomonaas/g | Absent in 1g |
| Enterobacteria/g | Absent in 1g |
Shelf Life: 3 years
Storage: Keep container tightly closed when not in use. Do not store above 130°F. Do not store with strong oxidizing agents or strong (concentrated) acids. Store locked up.
Usage and application of Zinc Pyrithione ZPTO: