[NHCOLL-L:3873] Monitoring alcohol concentrations in spirit collections

[Lisa Conyers]

Hi there

I was just wondering if anybody has experience using the Concentration 
Shift Indicators supplied by Labshop in The Netherlands?
Basically they are two plastic 'pills' which you place in a specimen jar 
and they either float or sink depending upon the concentration of 
ethanol/industrial methylated spirit  present. They are intended to give 
a rough estimation of alcohol concentrations, removing the need to open 
the jars to test with a density meter (unless more accurate measurements 
are required) - which obviously would be ideal with thousands of jars to 
monitor. I think they sound great in theory but it would be nice to know 
if anybody has encountered any problems. If you have used them and not 
had any problems it would also be nice to know!

Many Thanks

Lisa Conyers

-- 
Lisa Conyers
Zoological Collections Technician (Invertebrates)
Oxford University Museum of Natural History
Parks Road
Oxford OX1 3PW

T 01865 272581/272950
F 01865 272970
E lisa.conyers at oum.ox.ac.uk