The Benchmark S was created by L-K Industries as an economical alternative to the Benchmark C unit and an upgraded alternative to the Melton unit. It meets or exceeds the various requirements for ASTM and API standards. It is designed for determining sediment and water content at non-certified locations. It is optimal for laboratory settings or refineries using 100-mL capacity tube configurations. It is preferably installed on benchtops and used to test crude oil or refined petroleum products.

The fully insulated centrifuge prevents heat loss and allows for more accurate temperature control. Its sturdy outer case is finished with a solvent-resistant powder coating. The variable speed motor with LCD display ideally operates at speeds of up to 2000 rpm. The integrated countdown timer, which shuts down the motor when a test is complete, reduces variation in testing. Specially designed collars, cushions and shields help prevent/reduce tube breakage at higher G-forces.

The Benchmark S features a latching emergency stop button and automatic locking lid (the motor will not operate when the lid is open and the lid will not open while the motor is running).
 
It comes with a standard 4-place trunnion arm configuration (compatible with B, C, D or E style tubes) and is available in 120VAC or 240VAC. The unit may be hard-wired or a power cord may be purchased separately from L-K Industries. In the fall of 2016, a new mechanical shut off switch will be included to protect the unit from high temperatures.

Centrifuge tubes and power cords may be purchased separately through L-K Industries.

For parts, please contact LK Industries