Dulbecco's Phosphate Buffered Saline with Gentamicin w/ 120 µg/ml Gentamicin sulphate w/o Calcium, Magnesium and Phenol red contains 20ml DPBS in 50ml self-standing centrifuge tube

All media used in tissue culture have a basis of a synthetic mixture of inorganic salts known as a physiological or balanced salt solution (BSS). All the physiological salt solutions have been derived from the salt solution originally described by Sydney Ringer (1885). The first balanced salt solution to be developed specifically for supporting the metabolism of mammalian cells was Tyrode's solution. Since then many modifications have been done to obtain better buffering salt solutions and to prevent calcium precipitation. 1X Dulbecco's Phosphate Buffered Saline is without calcium, magnesium and phenol red. But contains 120µg per ml of Gentamicin sulphate. It is most commonly used for tissue transport and tissue disaggregation since presence of calcium and magnesium ions may hinder the trypsin activity.