The two types of disposable cuvettes Vernier sells are

1. Visible range (~350 nm to ~900 nm): polystyrene, 3+ mL capacity, 2 clear sides, 2 ribbed sides, includes 20 lids, not compatible with organic solvents
   Plastic Cuvettes (Visible Range) (CUV)
2. UV-Vis range (~220 nm to ~900 nm): proprietary plastic with good UV clarity, 1 to 1.5 mL capacity, 2 clear sides, 2 ribbed sides, includes 20 lids, not compatible with organic solvents
   Plastic Cuvettes (UV-VIS) (CUV-UV)

The lids for both cuvette types are made of polyethylene.
Cuvette Lids (100 per pack) (CUV-LID)

We also sell Starna Quartz Cuvettes:

1. Quartz Cuvettes (CUV-QUARTZ)
   This is the best option for UV Range absorbance measurements, made of Far UV Quartz with a spectral range from 170 to 2700 nm. The path length is 10 mm. The exterior dimensions are 12.5 mm (width), 12.5 mm (length), and 45 mm (height). The interior dimensions are 10 mm (width) and 10 mm (length). The nominal volume is 3.500 mL. There are two polished windows. Compatible with organic solvents
2. Fluorescence/UV Quartz Cuvette (CUV-QUARTZ-FUV)
   These have the same specifications as CUV-QUARTZ but have four polished windows.

Related TILs
Do you sell replacement lids for my plastic cuvettes?
What types of liquids can be poured into your plastic Colorimeter or Spectrometer cuvettes without harming the cuvette?
Where can I get quartz cuvettes for your spectrophotometers?
Do I need to use 4-sided clear cuvettes if I am doing a fluorescence experiment with the Spectro Vis Plus?