Basically the way fertilizer is a colorimetric test based on the Indonesian National standard ( SNI) guidelines covering the types of fertilizers, among others: Triple phospat, NPK, KCl, urea, ammonium and other Phosphat. The type of nutrients that can be tested using a Digital Tester NPK include: Elements Nitrogen ( N) With the destruction of fertilizer samples using a strong acid, ammonium salt compounds will be generated, then the color development with nesslerisasi done directly in the atmosphere will be obtained by alkaline and yellow complex with the sharpness of the color is proportional to the content of nitrogen in the sample. Phospor Elements ( P) content in the sample Phosphat fertilizer may be determined based on the reaction with ammonium molbdovanadat form complexes with the sharpness of the color yellow which is proportional to the content phospatnya. The element Potassium ( K) element of potassium in the fertilizer cobaltinitrit compound which reacts with a stable form of deposits with the sharpness of the color is proportional to the potassium content in the sample.
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PART-PART OF EQUIPMENT The parts of the apparatus is simple fertilizers, among others: 1. Button ON / OFF Selector Test Type 2. Regulatory levers Zero ( Zero Adjust) 3. Place the example 4. Button 5. Digital Viewer test TEST EQUIPMENT FERTILIZER SPECIFICATIONS Principle Analysis: Colorimetric Test Duration: N: 0-40% , P: 00-40% K: 0-25% Total Sample: 0, 1-0, 2 grams of Energy Projects staff Source: 2X9 Volt.