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The conductivity is a cumulative parameter for the ionic concentration of a solution. The more salt, acid or alkali in a solution, the greater its conductivity. The unit of conductivity is S/c123. The scale for aqueous solutions begins with pure water at a conductivity of 0.05 ¦ÌS/cm (25¡ãC). Naturally occurring waters such as drinking water or surface water have a conductivity in the range 100 - 1000 ¦ÌS/c123. The upper end of the scale is reached by some bases such as potassium hydroxide solutions with a conductivity of just over 1000 mS/c123.
Conductivity is measured by making a measurement of the electrical resistance. The simplest kind of measuring cell used consists of two similar electrodes. An alternating voltage applied to one of the electrodes causes the ions in the solution to migrate towards the electrodes. The more ions in the solution, the greater the current which flows between the electrodes. The instrument measures the current and uses Ohm's law to calculate first the conductance of the solution and then - by taken the cell data into account.
Thermal Conductivity of honey:
The specific heat of honey is in the 0.54-0.60 cal/g/¡ãC range for liquid honey, and is equal to 0.73 cal/g/¡ãC for finely granulated honey. The thermal conductivity of honey increases with temperature and total solids, ranging from 118 x 10 -5 to 143 x 10 -5 cal/cm sec ¡ãC.
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contents:
Data-Line Conductivity temperature measureing instrument/standard conductivity electrode with waterproof plug/ set cehcsolutions 2 x 100ml 1413¦ÌS and 12,88 mS at 25oC incl. electrode stand, all well arranged in Profi Box.
additionally available:
PT100 sensor with handle
PTC Temperature sensor