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Showing posts with the label hardness
Global Water Hardness Map

Global Water Hardness Map

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Water softener is needed when your water hardness is above 300 PPM or over 15 grains per gallon. 1… Read more Global Water Hardness Map
Global Knives Rockwell Hardness

Global Knives Rockwell Hardness

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Ice tempered and hardened to Rockwell C56C58 the stainless-steel holds the razor sharp edge of the… Read more Global Knives Rockwell Hardness