3.5cm, 6.0cm, 7.0cm, 9.0cm, 10.0cm ... and so on.Available with 6 different diameters of 3.5, 6.0, 7.0, 9.0, 10 ... available for very effective gas exchange Numeric Scale 12, 3, 6, 9 divides dish into quadrants for easy ... Growth Area (cm2 ) Lid Sterile Qty. per bag/case TCD000035 32.8 General, Non-treated 12.5*37.88 ... Growth Area (cm2 ) Lid Sterile Qty. per bag/case TCD010035 32.8 Standard, Treated 12.5*37.88. ...