Measures sludge settling characteristics. 1.4 liter. Kit includes clear plastic settlometer, wide mixing paddle and snap-on lid. Avoids side-wall interferences of settling normally encountered with conventional one Liter graduated cylinder (SVI) use. Yields information which closely approximates settling in secondary clarifiers and aerobic digesters. Calibrated in percent (%) and settled sludge volume (SSV). Bright, white markings contrast with dark sludges, allowing easy-to-read interface. Snap-on lid prevents spillage. Plastic construction reduces breakage during routine use. Meets requirements of Standard Methods.