How Do I Start a Free Thiourea Dioxide Replacement Trial?

Direct Answer

Direct Answer Five steps, and a usable conclusion normally takes about two weeks.

Step 1: send us the process information

Reducing agent in use, dose, liquor ratio, machine type, temperature, time and target figures. These determine how the trial is designed, and leaving any of them out makes the protocol coarser.

Step 2: agree the trial protocol

We issue a protocol setting out the reference sample, the dose gradient, the measurements and the pass criteria, usually within two working days.

Step 3: sample and bench trial

New customers receive a standard free sample of 200 g. Where a project needs a larger quantity, the sample charge and freight can be reduced under our sample policy. You run the parallel trials in your laboratory and we interpret the data; if the result is not clear, the gradient is adjusted and the run repeated rather than abandoned.

Step 4: scale up to a works trial

Once the bench result is stable, run a trial on a single machine, focusing on machine-to-machine variation, water quality and the operating window.

Step 5: process document and full conversion

After the works trial, a formal process document is issued covering the recipe, operating points, troubleshooting and safety notes, and then the line is converted.

Prepare in advance

• At least two representative articles, ideally including one deep shade
• A reference sample from the current process for side-by-side comparison

Bottom line

Send the process information, agree the protocol, take a sample for the bench trial, scale up to a works trial and issue the process document: five steps to complete the switch.