[Nhcoll-l] Vial jar system for easier specimen collection maintenance

[Simon Moore]

I used nylon caps for the vials, which avoids hooky appendages getting snagged.

With all good wishes, Simon.

Simon Moore MIScT, RSci, FLS, ACR
Conservator of Natural Sciences and Cutlery Historian,
www.natural-history-conservation.com 




On 19 Mar 2016, at 09:43, Dirk Neumann <dirk.neumann at zsm.mwn.de> wrote:

> ... agree with Paul; especially against aggressive denaturants plastic 
> bags might turn out to fail. We have been using tea bags (e.g. to 
> protect remove gill arches of larger fishes) - the larger ones which, 
> you can buy at a supermarket to fill in open (not pre-bagged) tea.
> 
> Disadvantage: you have to tear the bag if you want to remove contained 
> specimens / parts again; not a good solution if contained 
> samples/specimens are highly frequented
> Advantage: bolsters included specimen
> 
> Cotton plugs: to avoid this, the colleagues in Berlin changed to very 
> fine, high-quality Japan paper, if I am not completely wrong.
> 
> All the best
> Dirk
> 
> 
> Am 18.03.2016 um 19:46 schrieb Callomon,Paul:
>> My reservation about trying the bags-in-jars method would be that we don't know what long-term effects the plastic might have on the fluid, or vice-versa.
>> Some while back one of my predecessors submerged hundreds of glass vials with phenolic resin screw caps in jars of ethanol. Over the years, exudates from the plastic turned the alcohol a rich tan color - and in every case I've examined so far, the screw caps backed off so far that they are completely loose, negating the purpose of putting them in there in the first place.
>> The point being, then, that one should perhaps avoid submerging any materials in ethanol for the long term unless they've been shown to remain unchanged.
>> 
>> 
>> Paul Callomon
>> Collection Manager, Malacology, Invertebrate Paleontology and General Invertebrates
>> 
>> Academy of Natural Sciences of Drexel University, Philadelphia
>> 1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
>> callomon at ansp.org Tel 215-405-5096 - Fax 215-299-1170
>> 
>> 
>> 
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