Disk Public/Treated Water, pH: 4.5-9.5 pH, Series: D101, Total hardness: 0-70 gpg, Total alkalinity: 0-250 ppm, Tests include free and total chlorine(0-15 ppm), hardness, iron and copper(0-3.0 ppm)
Physical Characteristics of Gases kit, 15 Gas Demonstration Hardware, Gas laws (Boyle’s, Charles’s and Gay-Lussc’s) are simple mathematical relationships between volume, temperature and pressure.
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