TLC DEVELOPING TANKS Cylindrical glass tanks for the development of 1 x 3 in. to 10 x 20 cm plates. These tanks provide maximum vapor phase saturation with a minimum amount of solvent Polyethylene or glass cap included Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements for Plate Size : 5 x 10 cm Lid : Polyethylene Case Qty : 12