The first system tested was a 15-year old design known as the SF-60 and supplied by Genevac Ltd, whilst the second system was a modern computer- controlled evaporation system, the Genevac HT-4. The SF-60has been in regular use for routine drying at Eurogentec for many years, but is known to be very simplisticand to have several drawbacks. Chief amongst these is an inability to control the heat input into the samples, protection from direct heating and lack of temperature control. These problems were entirely solved in the sophisticated design of the HT-4.
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