Development of Karl Fischer Reagents

I-1. Questions & Answers about Karl Fischer Reagents
3. Liquefied Gas Samples
A dual-aperture pressurized sampling bottle and stainless steel pipes are
used. Commercial products are available to suit specific purposes and
these are recommended.
The key requirement for sampling is to ensure that the liquid phase is
introduced into the dehydrating solvent (or electrolyte). Errors may result if
only the gaseous phase is introduced. Also, the entire amount of sample
must be added. The general procedures are summarized below.
a) Position the gas bottle upright or at an angle.
b) Connect a pipe between the gas bottle and the sampling bottle.
c) Introduce the liquid phase into the sampling bottle.
d) Keep the amount of the sample to 80% or less of the vessel's capacity
and determine the weight.
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Figure 14: Trace Sampling Bottle
Sample
Figure 15: Syringe-Type Sampling Bottle
Injection needle
Figure 17: A Typical Sampling Bottle
Figure 16:
Semi-Solid Sampling Bottle
Extension pipe