Disposable plastic micro cuvette. For size measurement at a 173 degree scattering angle. Pack of 100 with 100 caps, minimum volume 40µL, suitable for Zetasizer Nano S and ZS. Not suitable for measurements at a 90 degree scattering angle. (Resistant to Acetone, Benzaldehyde, Butanone, Dioxane, DMF, Ethyl acetate, Isopropanol, various acids and bases)