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Lynne Wong's PhD thesis

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4.6.1.2 10° Brix sucrose solution<br />

Refined white sugar (100 g) was weighed into a 1 L volumetric flask, followed by distilled<br />

water to make up to mark. The solution was preserved with mercuric iodide solution at the<br />

rate of 0.5 mL L -1 . The mercury iodide solution was prepared as described in Chapter 2,<br />

Section 2.1.1.1.<br />

4.6.2 Equipment<br />

Glass bottles of a nominal size of 250 mL with a plastic stopper were found suitable as<br />

sample bottles for sample drying and contacting with the sucrose solution.<br />

A glass rod with a rounded button end (Fig 4.3) was used to squeeze out solution from<br />

fibre for filtration. This rod is readily obtainable from suppliers of laboratory equipment.<br />

Figure 4.3. Glass rod with button-end.<br />

A two-decimal place Mettler model PJ 3600 analytical balance was used for all mass<br />

determinations.<br />

A Gallenkamp vacuum oven with a power rating of 1000 W and a capacity of 31 L<br />

connected to a Fisons single stage vacuum pump of 50 Hz and 185 W was used to dry the<br />

samples. Dishes containing silica gel were placed in the oven to absorb moisture (see<br />

Fig 4.4).<br />

144

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