Figure 1From: Relationship between nocturnal blood pressure and 24-h urinary sodium excretion in a rural population in KoreaAliquot cup to collect 1/40 of each voided urine. (A) Hollow tube to separate 1/40 of the voided urine in the cup. (B) The button to send down the separated urine into the separated container. (C) Smaller and sealed container to collect all of the 1/40 urine during study period.Back to article page