50-100Hz Saybolt Viscometer, Feature : Four Times Stronger, Proper Working

Test method :- determines the time required for 60ml of sample to flow through a calibrated orifice under precisely controlled conditions. Saybolt universal seconds (sus) is the standard measurement for lubricants, insulating oils, and lighter fuel grades, and saybolt furol seconds (sfs) is used for heavier oils and bitumens.