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Ria Vials

Abdos Radioimmunoassay (Ria) Polystyrene (PS) tubes are cylindrical vials with a rounded bottom and separate cap. These are generally used to measure concentrations of substances, such as antigen concentrations (for example, hormone levels in the blood) without the need to use a bioassay. At room temperature, the transparent PS tubes can accept mild bases and weak acids, but not organic solvents and can withstand 1400 RCF during centrifugation.