Meteorite ID™ accurately detects even trace amounts of nickel. It's sensitive enough to detect the presence of free nickel at a level as low as 10 ppm. About 95% of meteorites contain nickel, so specimens that do not test positive are likely not meteorites. It's quick and simple - you'll see test results within seconds. A pink-red color indicates nickel and warrants further laboratory testing for positive identification. The squeezable 0.5oz bottle is easy to use and is sufficient for 200 tests. This is a single bottle of ready-to-use dimethylglyoxime (dmg) spot test for nickel. The nickel test is pre-mixed and pre-measured for both accuracy and convenience. This reduces mess and inaccurate test results. Meteorite ID is safe and easy to use and It will not harm metal items. Directions: Dab two drops of Meteorite ID on a cotton swab. Rub the specimen firmly for 15-30 seconds with the swab. A pink-red color on the swab indicates nickel. Make sure the surface of the specimen is clear of any dirt or debris. Do not reuse the swab. To demonstrate a positive test, test a nickel coin. It contains 25% nickel and will turn the swab pink (nickel is detected). Shipping Notice: Meteorite ID contains a flammable liquid and must be shipped via Surface Mail Only; it requires ORMD labeling to ensure it is not shipped via air. These precautions can add to delivery times. Disclaimer: This method only tests for the presence of nickel and does not necessarily indicate the sample is, in fact, a meteorite. Further analysis by a professional assay lab is required to positively identify a meteorite. This test helps eliminate objects that lack the presence of nickel, which will most likely NOT be meteorites.