Cell Spreaders from Heathrow Scientific have a smooth surface that will not tear agar plate or disturb media layer. Constructed of acrylonitrile-butadiene-styrene (ABS) plastic. Cell Spreaders are supplied sterile and can be used immediately without flaming. Lot-to-lot traceability. Each spreader measures 146 x 38mm, 4mm diameter. Pack of 500. Choose between bulk or individually wrapped packaging.