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Buffer Solution
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ETATRON D.S. S.P.A.
Rome, Italy
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Buffer solution in polythene container (55ml) for calibration and control of pH meter, Rx (ORP) meter, and conducimeter (500ml). 
Upon request 250 ml buffer solutions for professional use.
pH 4
pH 7
pH 9
Rx 475 mV
Rx 650 mV
1413μS/cm
12880μS/cm

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