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A simple ice nucleation spectrometer
journal contribution
posted on 2023-05-18, 09:10 authored by Wharton, DA, Mutch, JS, Peter Wilson, Marshall, CJ, Lim, MThe construction of a simple ice nucleation spectrometer is described. It uses 10 μl droplets loaded into glass capillary tubes which are then inserted into an aluminium holder. Each holder takes six capillary tubes surrounding a central thermocouple. Four holders are placed into a cooling block, cooled by fluid from a programmable refrigerated circulator, and the thermocouples interfaced to a computer to record temperatures. Freezing of each sample is detected by an exotherm on the temperature recording, with 24 samples recorded per run. The spectrometer was tested using deionized water, an extract from a New Zealand alpine cockroach and an extract of lawn grass. The cockroach extract is estimated to contain about 103 more nucleators, active at -5°C, than the grass extract.
History
Publication title
CryolettersVolume
25Issue
5Pagination
335-340ISSN
0143-2044Department/School
College Office - College of Health and MedicinePublisher
Cryo LettersPlace of publication
C/O Royal Veterinary College, Royal College St, London, England, Nw1 0TuRepository Status
- Restricted