As we mentioned in the other article, a round vial can not be used directly for Haze standardization and measurement.
We have made special vial holders with lens to read the color and haze for liquid sample in round vial.
* ISO 2R/4R Vial Holder for Haze (D02-1018-077)
* 24mm Vial Holder for Haze D02-1018-759
We can provide the other vial holder with lens for color and haze measurement as well if required.
(Note: We used the ISO 2R/4R round vials from SCHOTT.)