<div class="description">
<p>Beckman Model 72 pH Meter
</p><p>The Beckman Instruments Model 72 pH meter was a line operated version of the Model 76 Expanded Scale pH Meter, designed for routine use.
</p>
Published without a copyright notice in Beckman Instruments <i>Feedback</i> newsletter,  v3 n3, April 1960 (box 44, folder 34)</div>
<div class="fn value">
Unknown<span style="display: none;">Unknown </span></div>
1960<div style="display: none;">date QS:P571,+1960-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external free" href="https://digital.sciencehistory.org/works/765371485">https://digital.sciencehistory.org/works/765371485</a>