The TQC Viscosity Calculator is an indicative conversion table relating viscosity (in Cst) to flow time of different cups. Printed on the front is the No.4 complying with BS-NF-ASTM-Din and Zahn 2, on the back ISO no.’s 3-4-5-6 and Zahn 3 as well as the Gardner viscometer.
Standards: ASTM D2100, ASTM D4212, BS 3900, DIN 53211, NF T030-014, ISO 2431
