Performance | Indicators | |
Character | No smell, no mildew, no visible foreign impurities | |
Chrominance | Difference from the chrominance sample △E≤3 | |
pH | 5.0~10.0 | |
Writing effect | Similar as the sample | |
Intermittent writing effect | Writing effect same as the sample after 60℃ exposure intermittent 4hours | |
Resistance to water | Clear writing ,good color(Non-fade design) | |
Color fastness to light | ≥2 grade | |
Resistance to cold | -20℃~room temperature,good reducibility, can be written normally | |
Stability | ≤1 | |
Heavy metal(mg/kg) | 40±1℃ sealed 120h keep stability | |
Arsenic salt (mg/kg) | ≤0.5 | |
Microbial limit | ≤0.3 | |
Washing performance | Bacterial(≤1000cfu/g) | |
Mould and yeasts(≤100cfu) | ||
Escherichia coli(None) | ||
Salmonella(None) | ||
Packing specification | Easily washing by water | |
Storage | Sealed ,keep in the cool and dry conditions | |
Customize yellow, magenta, cyan, black, green, purple and other color standards. |