Developer Terms and Conditions › The Development › Hardware › Wavelength specifications for cuvettes? › Reply To: Wavelength specifications for cuvettes? March 27, 2017 at 8:35 am #43697 SebastianParticipant You can use nearly every cuvette you want. As mentioned above, normal optival glass works but also PS (Polystrene) should be fine. Be careful not to use thick layers or nearly black liquids as the total light is absorbed and your results get bad.