Universal test tube holder with base for 8-25mm diameter test tubes in ...
Single cell holder with base for 10mm square cuvettes.
This test tube holder kit for 8-20mm diameter test tubes includes universal ...
This cylindrical cell holder kit for single up to 100 mm pathlength (20mm d ...
This 4-position cell holder for 10mm square cuvettes is an accessory f ...
Longpath four-position cell holder for up to 50mm rectangular cuvettes ...