The routine processing and measurement of samples in our Radiocarbon Laboratory began early in 1970 following a one-year testing period during which standard samples (anthracite and NBS oxalic acid) as well as samples of known age were prepared and measured. Our system is based on the studies of de Vries and Barendsen (1953), Fairhall et al. (1961) and Olson and Nickoloff (1965). However, several modifications of the cited methods were introduced and are briefly discussed below. A detailed description of the whole system will be published elsewhere (Srdoč et al., 1970).
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