[Nhcoll-l] [EXTERN] Digital Density Meter

[Dirk Neumann]

Hi Katherine,

many are using the handheld alcohol density meters of Anton Paar: https://www.anton-paar.com/corp-en/products/details/snap/

Anton Paar has a worldwide distribution network and sells in Africa, Australasia, Europe North- and South America.

Less expensive and perhaps more convenient are small traditional manual density meters that fit into jars. few years back, Gassner Glastechnik manufactured small calibrated (60/70/80 % EtOH) 5cm alcohol metres which allow direct measuring inside jars.

The advantage is that they are small and have no electronic or mechanical parts that need maintenance or could fail, they also do not need calibration, and are easy to apply. Even though manual alcohol metres are less accurate and cannot show the alcohol concentration with two decimal places, they are accurate for fluid preserved collections.

Also, alcohol metres have no tubing that need to be cleaned/rinsed after measuring (oils, fats, denaturing agents).

Hope this helps
Dirk


Am 05.06.2026 um 22:42 schrieb Katherine Dunnell:
Hello Everyone!

Can anyone recommend a digital density meter they like using for wet collection top ups?
Would love to hear what others are using within these collections.
best
Katherine


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Katherine Dunnell (she/her)
Manager, Collections Care - Natural History

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Dirk Neumann
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--
Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels
Postanschrift: Adenauerallee 127, 53113 Bonn, Germany

Stiftung des öffentlichen Rechts;
Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian Grüter (Kaufm. Geschäftsführer)
Sitz der Stiftung: Adenauerallee 160 in Bonn
Vorsitzender des Stiftungsrates: Dr. Michael H. Wappelhorst
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