Pyrex Measuring Cylinders are manufactured from chemically resistant Pyrex® borosilicate glass. They comply with ISO 4788
The 3201 series are calibrated to Class A tolerance with ‘H’ Certified Conformity and are inscribed with serial number for downloadable batch certificate.
The 3200 series are manufactured to Class B tolerance with robust hexagonal foot. The Pyrex Measuring are engraved with white enamel graduations which remain visible when using dark coloured solutions.