ECE Square Floc Jars



	All ECE jar tester systems use our improved 1 L square sample jars. We also offer the same configuration and features in a 2 L size, for use with other jar test equipment.

Configuration: It has long been accepted that the square sample jar configuration is greatly superior to a cylindrical beaker for all coagulation and flocculation jar testing. Despite the higher initial cost, this type of jar is almost universally used by those requiring accurate, reproducible, and meaningful results from jar test procedures.

Material: ECE floc jars are fabricated from crystal-clear, colorless acrylic sheet. This allows far better visual observation of samples than is possible with the thin-wall, blue-tinted, injection-molded jars that are sometimes used for this type of work. The thicker wall of the ECE jars also results in less sample temperature variation during a jar testing run.

Capacity: ECE floc jars are available in 1 L and 2 L sizes. The 1 L sample size helps avoid errors in dosage calculations, makes jar handling easier, and requires less sample volume (often an important consideration in off-site work). The 2 L jar is available for use with jar test equipment requiring that size; it has the standard 2 L square jar dimensions. To allow direct comparisons between data obtained from jars of both sizes, all vertical dimensions (and particularly the 100 mm submergence of the sampling port) have been kept the same.

Calibration marks: All jars have calibration marks showing the 1 L or 2 L level, plus 5% incremental graduations for confirmation of the volume of any additional liquid that may have been added. The 2 L jars also have graduations from 0 to 2 L in 100 mL increments, to facilitate use of sample volumes less than the full 2 L.

Improved sampling arrangement: The old sampling arrangement consisting of a rubber stopper, glass tube, flexible tube, and tubing clamp (or some similar configuration) has been eliminated. Instead, a miniature precision quick-connect stopcock system is used.

Stopcock sampling system

The stopcock is inserted directly into a fitting threaded into the wall of the jar, and can be removed with a quarter turn. If subsurface sampling is not required for a particular jar test run, the stopcock can be replaced with a cap, to make jar handling a little easier and to reduce risk of damage to the stopcock. This system eliminates the possibility of accidental spillage resulting from the stopper being dislodged or the glass tube being broken, ensures reproducible sample withdrawal rates, and is much more compact and convenient. It has proved to be vastly superior to the old rubber stopper based configuration in every way.

Each sample jar is supplied with threaded adapter, stopcock, cap, tubing adapter, flexible tubing, and 50 mL beaker.

Dimensions: If you are considering using our jars with other manufacturers’ equipment, please check jar and equipment dimensions to ensure compatibility.

ECE 1 litre jar dimensions
Inside: 79.8 x 79.8 x 197.0 mm (3.14 x 3.14 x 7.75 in)
Outside: 91.8 x 91.8 x 203.0 mm (3.61 x 3.61 x 8.00 in)

ECE 2 litre jar dimensions
Inside: 114.7 x 114.7 x 197.0 mm (4.51 x 4.51 x 7.75 in)
Outside: 126.7 x 126.7 x 203.0 mm (4.99 x 4.99 x 8.00 in)