I well remember when I took over the editorship of the journal some 14 years ago, the global price of sugar was hovering at around 6 cents/lb, and Brazil was […]
“Words, words, words” Hamlet1 replies in response to Polonius’ question as to what is he reading. As the conference on Sustainable Sugar Forum2 proceeded on the morning of 16th June […]
Browne & Zerban (1948) quote Scheibler who in 1875 investigated a “double dilution” method to reduce the error caused by the lead precipitate in saccharimetry; Pellet & Sachs in 1880 […]
Sampling condensed vapours and condenser waters is never easy. Beale (1959, 1962) and Claire (1965, 1967) mention practical difficulties encountered. Vapour sampling involves iso-kinetic (constant velocity) principles which require sophisticated equipment to obtain representative condensed vapour samples. Most workers have sampled condensates and condenser waters, using simplified sampling equipment. One of the problems associated with condenser waters is that the inlet water usually contains sugar. The large volumes of water and low concentrations of sugar can cause serious errors. A simple calculation illustrates the difficulty; we assume that the condenser inlet and outlet waters contain 70ppm of sugar, that 1 ton of vapour requires 30 tons of inlet water, and that the analytical precision is ±1ppm.