Proton T 1D and T 1 ρ are measured on ammonium sulfate crystal with 0.8% and 7.3% 1 7 O content, at 30 and 10 MHz. A marked reduction is observed in T 1D and T 1 ρ compared with normal specimens at temperatures above about 200 K.
Virtually any organic substance can be converted into the product, anything from food wastes, to waste water, to animal waste. In that case, buy straight urea or ammonium sulfate from animal feed stores (urea is fed to cattle), siteone (previously known as lesco or john deer landscapes), a local farmer coop, or turf management supply stores.