Indanthrene yellow test paper allows the easy determination of hydrosulfite (sodium dithionite). It is used to determine the endpoint in the conversion of vat dyes to the leuco form. Because of the special purpose, indanthrene yellow paper is also called hydrosulfite paper.
| Platform | Quantitative test strips | پلتفرم |
| Parameter | Vat dyes | پارامتر |
| Detection limit | Vat dyes – Alkaline sodium dithionite traces | محدوده تشخیص |
| Color change | Vat dyes – yellow ↔ blue | تغییر رنگ |
| Length | 70 mm | طول |
| Width | 20 mm | عرض |
| Shelf life (from production) | 2 Year(s) | ماندگاری (از زمان تولید) |
| Storage temperature | 4−30 °C | دمای نگهداری |
| Scope of delivery | 200 test papers in a plastic box | بسته بندی تحویلی |
| Hazardous material | No | مواد خطرناک |
