For general testing and film processing, this hydrometer is plain form. Recommended by Eastman Kodak for processing Kodak Ektachrome EG film. ASTM specification. Length is 29.4 cm (11 1/12""). Divisions are 0.001.
For an extra charge, any hydrometer on this page can be ordered with a certificate and calibrated traceable to N.I.S.T.