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CSN EN 15621
Animal feeding stuffs - Determination of calcium, sodium, phosphorus, magnesium, potassium, sulphur, iron, zinc, copper, manganese and cobalt after pressure digestion by ICP-AES
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https://www.en-standard.eu/csn-en-15621-animal-feeding-stuffs-determination-of-calcium-sodium-phosphorus-magnesium-potassium-sulphur-iron-zinc-copper-manganese-and-cobalt-after-pressure-digestion-by-icp-aes/
