Poulten & Graf offer a wide range of volumetric glassware under the VOLAC and FORTUNA brands.
All Volumetric Glassware is made according to ASTM, USP, and ISO standards. Certification is available, either as a batch or individually, with appropriate ring marks.
Calibration of flasks and cylinders is "IN"; indicating that the liquid poured out equals the volume indicated. Pipettes and burettes are calibrated "EX", which requires observance of the discharge waiting time. All VOLAC glassware is individually calibrated. Color markings are either amber stain diffused or ceramic colors. All VOLAC glassware is individually printed for greater accuracy.