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The link online to the paper is <a href="https://nvlpubs.nist.gov/nistpubs/jres/81A/jresv81An1p89_A1b.pdf" id="LPlnkOWALinkPreview">https://nvlpubs.nist.gov/nistpubs/jres/81A/jresv81An1p89_A1b.pdf</a></div>
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<a target="_blank" id="LPUrlAnchor906659" href="https://nvlpubs.nist.gov/nistpubs/jres/81A/jresv81An1p89_A1b.pdf" style="text-decoration: none; color: var(--themePrimary);">Humidity fixed points of binary saturated aqueous solutions</a></div>
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JOURNAL OF RESEARCH of the National Bureau of Standards- A. Physics and Chemistry Vol. 81 A, No.1 , January-February 1977 Humidity Fixed Points of Binary Saturated Aqueous Solutions</div>
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nvlpubs.nist.gov</div>
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The paper is also attached. I've included a picture of the setup I use for controlled humidity experiments. I use a HOBO sensor to monitor the humidity and temperature, inside the lid. </div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Nhcoll-l <nhcoll-l-bounces@mailman.yale.edu> on behalf of Lennart Lennuk <Lennart.Lennuk@loodusmuuseum.ee><br>
<b>Sent:</b> Wednesday, October 13, 2021 3:47 AM<br>
<b>To:</b> nhcoll-l@mailman.yale.edu <nhcoll-l@mailman.yale.edu><br>
<b>Subject:</b> [External] [Nhcoll-l] easy way to calibrate temperature humidity sensors</font>
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<p class="x_MsoNormal"><span style="color:black">Hi!</span></p>
<p class="x_MsoNormal"><span style="color:black"> </span></p>
<p class="x_MsoNormal"><span style="color:black">In our herbaarium we have one quite old and one new temperature humidity sensor.</span></p>
<p class="x_MsoNormal"><span style="color:black">The data is quite diferent though these sensors are placed in the same spot.</span></p>
<p class="x_MsoNormal"><span style="color:black"> </span></p>
<p class="x_MsoNormal"><span style="color:black">Do you know any good and cheap ways to calibrate those senors?</span></p>
<p class="x_MsoNormal"><span style="color:black"> </span></p>
<p class="x_MsoNormal"><span style="color:black">Best regards!</span></p>
<p class="x_MsoNormal"><span style="color:black">Lennart Lennuk</span></p>
<p class="x_MsoNormal"><span style="color:black">Head of collections</span></p>
<p class="x_MsoNormal"><span style="color:black">Estonian Museum of Natural History</span></p>
<p class="x_MsoNormal"><span style="color:black">+372 6603404, 56569916</span></p>
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