ph meter, atc ,two displays model : ph-221 * 0 to 14.00 ph, 1,999 mv. * lcd show both ph and the temperature. * atc or manual temp. compensation. * auto calibration for ph 4, ph 7 and ph 10. * optional ph electrode and the atc probe. * 1600 data logger point. * rs232 computer interface. * dc 9v battery (006p) or dc 9v adapter in.
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lutron ph-221 ph meter, atc, two displays
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