Pretzels with Lye water

Hi everyone!

Trying to make some soft pretzels with lye water, but all the recipes i can find online call for powdered lye to be mixed with water in a certain ratio, but all i have is a premixed lye solution found here:

https://www.amazon.com/gp/product/B07NVZKYNF?pf_rd_p=183f5289-9dc0-416f-942e-e8f213ef368b&pf_rd_r=8X3K3GEQF6MYCRD8QWPT

will this work? does anyone know what the ratio of lye to water is in this product?