Cure#1 (6.25% nitrite)... = 28.38 grams nitrite per pound of salt (454 grams)
cure#1 (2% nitrite) ..... = 9.08 grams nitrite per pound of salt (454 grams)
If you use the 2% nitrite at the rate the package tells you, 3 grams per Kg of meat,
9.08 / 454 = 0.02 grams nitrite per gram of cure
0.02 at 3 grams per Kg = 0.06 grams per Kg which is 60 Ppm nitrite...
I don't know what the minimum nitrite level to kill botulism is...
The USDA/FDA recommends a MAXIMUM amount and the MINIMUM is an obscure value...
Their declaration that their product cures meat FASTER is BS.... Curing time is directly related to molecule size and penetration rate of that molecule to fully cure the meat... I think it a gimmick to sell curing salt...
To obtain 156 Ppm, in meat, using the 2% cure, you need to add 7.8 grams of that cure to 1 Kg of meat (2.2 pounds) ... When you calculate the salt you just put in the meat, that's = 3.47% salt.... I can't eat meat that salty..... I'm in the 1.5 to 1.8% salty meat camp...
That amount of salt is even a bit much for dried cured products... Minimum salt content for dried cured meats runs about 2.8-3% salt... for bacteria control....
Using the FDA guidelines, at least you have room to adjust the salt amounts to make the meat edible...
I'm thinking..... Some dude in a 3 piece suit came up with a marketing gimmick..