Carrageenan is that the carrageenan is first dissolved and filtered to remove cell wall debris. The carrageenan is then precipitated from the clear solution either by isopropanol or by potassium chloride. A hybrid technology in which seaweed is treated heterogeneously as in the semirefined process exists, but alcohol or high salt levels are used to inhibit dissolution. This process is often used on South American seaweeds and gives some of the cost benefits of semirefined processing, while allowing a wider range of seaweeds to be processed, however, the naturally low cellulose levels in some South American seaweeds allow them to be
Purple Mountain (Kerry) metres. Purple Mountain (Kerry) Purple Mountain () at high, is the 21st–highest peak in Ireland on the Arderin scale, and the 28th–highest according to the Vandeleur-Lynam scale. Purple mountain is the highest peak of the Purple Mountain Group, and is located in County Kerry, Ireland. Purple Mountain is composed of sandstone particles of various sizes which are collectively known as "Old Red Sandstone". Old Red Sandstone has a purple-reddish colour, and has virtually no fossils. The colour gave its name to the mountain group. The composition of "Old Red Sandstone" is variable and contains quartz stones, mudstones, siltstones, and sandstone