Pack Size: box of 200 strips
Hazard Class /UN Number: Not Restricted
Storage Temp: Room Temperature
Indanthrene yellow paper is used to determine the end point in the conversion of vat dyes to the leuco form. In the presence of excess sodium hydrosulphite (sodium dithionite) and alkali the yellow paper turns blue. Because of the special purpose,indanthrene yellow paper is also called Hydrosulphite paper.