[Nhcoll-l] Window cleaning spray for inside exhibit

[Callomon,Paul]

I believe the efficacy of damp newspaper in cleaning glass comes from the picking-up qualities of the paper itself, which is bleached open ("rag") uncoated stock. This contrasts with the glazed paper used in magazines and brochures, which is whitened with china clay. It's possible that tabloids use an even cheaper grade of paper than broadsheets ("serious newspapers"), adding to the savings already achieved by not employing actual journalists.
One thing that has changed in recent years is the replacement of traditional newspaper ink, which was oil-based and used carbon black, with soy-based inks. Maybe someone could dig out some old newspapers (say from the 1970s or 80s) and compare their glass-cleaning performance with today's versions.
Paul Callomon
Collection Manager, Malacology and General Invertebrates
________________________________
Academy of Natural Sciences of Drexel University
1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
prc44 at drexel.edu<mailto:prc44 at drexel.edu> Tel 215-405-5096 - Fax 215-299-1170



From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> On Behalf Of Dirk Neumann
Sent: Tuesday, October 4, 2022 2:17 PM
To: nhcoll-l at mailman.yale.edu
Subject: Re: [Nhcoll-l] Window cleaning spray for inside exhibit


External.
I was just about typing the same, but Paul was faster :-)

Maybe worth adding: HERE, tabloids really are superior compared to serious newspapers (at least this is my personal experience). This method also removed slight oily strains.

With best wishes
Dirk


Am 04.10.2022 um 20:11 schrieb Callomon,Paul:
For glass that is not heavily soiled - that is, previously cleaned but now dusty or grimy again - I thoroughly recommend crumpled newspaper lightly dampened with water. It is amazingly good at cleaning glass, and of course involves no chemicals.


Paul Callomon
Collection Manager, Malacology and General Invertebrates
________________________________
Academy of Natural Sciences of Drexel University
1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
prc44 at drexel.edu<mailto:prc44 at drexel.edu> Tel 215-405-5096 - Fax 215-299-1170





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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 Wappelhorst
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