Monty solution

Has anyone tried this monty solution?

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aahh the monty solution,i've seen it used as he works in the same area as me,smells very much like hypo corps012588,

i also have a few during photos i think of him cleaning a block paved driveway-its shocking to say the least,

it will be hypo and maybe sodium hydroxide added at a guess

It's Hypo, sent him an email to enquirer about prices and wanted over £500 for 100l, long and short it is hypo. Benz black was is 10x cheaper 

i do have a few piccies of monty in action,and six weeks after if anyone wants to see any?