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23-05-2005, 06:18 PM

To test the effectiveness of this TDS meter, one small cup was filled with DI water and the other big cup with normal tap water.

23-05-2005, 06:18 PM	#2
nim75sg Guest Posts: n/a	To test the effectiveness of this TDS meter, one small cup was filled with DI water and the other big cup with normal tap water.