أصدقاء كلية العلوم بالعجيلات جامعة الزاوية - Lenntech Calculators With these calculators you can calculate: Molecular Weight Calculator Converter Parts Per Million (ppm) Ion Exchange calculator TDS and Electrical Conductivity Water analysis
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🎈 Public Lab: Calculating PPM (parts per million) and Accuracy results for The DH 4.2 spectrometer (homemade)
Hydroponics - Bagi yang mau utak-atik tingkat kepekatan nutrisi, bisa gunakan link ini. http://www.lenntech.com/calculators/conductivity/tds-engels.htm | Facebook
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