Bilayer Cuvettes

Bilayer Cuvettes, made from either polystyrene, polysulfone or Delrin, have a 0.5 mm well milled into their base to confine the motion of stirbars and to reduce mechanical noise artifacts. A 2 × 5 mm or 2 × 7 mm Teflon-coated stirbar is supplied with each 13 mm or 22 mm cup, respectively. Standard available aperture diameters are 150, 200 or 250 µm.  Custom aperture sizes are available.  The wall thickness at the aperture is 250 µm (0.010").

Cuvette Material

Polystyrene has been a favored material for cuvettes for several years. However, its poor resistance to organic solvents can lead to degradation of the aperture. Cuvettes have also been made from Delrin (acetyl resin) and many users report good bilayer formation as well as easier maintenance and longer life. It should be noted, however, that the Delrin cuvettes do not work equally well in all applications and with all users.

Warner Instruments also offers cuvettes made from polysulfone. This material has many of the mechanical properties of polystyrene (rigidity, machinability, optical transparency) coupled with an increased chemical resistance to solvents. The choice of cuvette material will depend on your application.

Ordering information

Classic 13 mm Cuvettes

CP13A-150 Polystyrene with 150 μm Aperture

CP13A-200 Polystyrene with 200 μm Aperture

CP13A-250 Polystyrene with 250 μm Aperture

CD13A-150 Delrin with 150 μm Aperture

CD13A-200 Delrin with 200 μm Aperture

CD13A-250 Delrin with 250 μm Aperture

CF13A-150 Polysulfone with 150 μm Aperture

CF13A-200 Polysulfone with 200 μm Aperture

CF13A-250 Polysulfone with 250 μm Aperture

Classic 22 mm Cuvettes

CP22A-150 Polystyrene with 150 μm Aperture

CP22A-200 Polystyrene with 200 μm Aperture

CP22A-250 Polystyrene with 250 μm Aperture

CD22A-150 Delrin with 150 μm Aperture

CD22A-200 Delrin with 200 μm Aperture

CD22A-250 Delrin with 250 μm Aperture

CF22A-150 Polysulfone with 150 μm Aperture

CF22A-200 Polysulfone with 200 μm Aperture

CF22A-250 Polysulfone with 250 μm Aperture

Replacement Magnets

MAG-13     2 x 5 mm for 13 mm Chambers and Cuvettes (Package of 5)

MAG-22     2 x 7 mm for 22 mm Chambers and Cuvettes (Package of 5)