Yes, this is another practical application to evaluate.
Thiourea Dioxide can be used where a reducing environment is required to remove residual dye from dyeing machines, pipes, heat exchangers, filters, fabric-contact surfaces and circulation systems.
The objective is not simply maximum reduction. The real target is: residual dye removal + minimum equipment downtime + minimum chemical consumption.
A trial can compare the current hydrosulfite recipe with a Thiourea Dioxide recipe using the same machine and the same dye contamination level.