This sample has much more ammonia than Greg found in MAG flake, or than I found in Dowflake. I'd be wary of using it.
If you get an ammonia value (and it is accurate), then the idea would be that in a reasonably sized addition, that ammonia not rise appreciably. I'd never want ammonia to rise above 0.1 ppm total ammonia. I work through that in the article.
So in this case, a 1200 to 1 dilution is the limit that I'd consider adding because of ammonia (again, assuming it is accurate). That limits one to about 40 ppm of ammonia. I WOULD NOT USE THIS MATERIAL IN THE WAY THAT I DESCRIBE IN MY ARTICLE, WHICH IS A SUBSTANTIALLY LARGER ADDITION THAN THAT. I'd add it in many much smaller additions.
I'd also add it very slowly the first time in case these tests are off.