Checking for Nitrates

Today, May 21, 2007, our first day together alone with Miss Cuadra and without Miss Gucor. OK, my guess was right. We inspected the particles we got from the cotton swabbing thing whether there is presence of gun powder nitrates. We used DPA or diphenylamine and the results were rather stunning. All four guns(because we cotton swabbed for of them) showed positive signs of gun powder nitrates, and therefore, we can conclude that the weapon was fired. But as I said, this test is corroborative because of some important reasons.