Labtop electromagnetic sieve shakers offered by jvc separation engineers are very compact vibrating machines for test sieves. These have three selectable modes of vibrations, i.E. 50 hz, 25 hz half-stroke and 25 hz full stroke. Technical specifications include: dimensions of 300 mm x 300 mm x 150 mm; weight of 8 kg [approx]; power consumption of 180 w; and power supply at 230 v, 50 cycles single phase. The sieve shakers can efficiently vibrate 5 test sieves + 1 bottom pan. They can accommodate any standard test sieve. The electromagnetic sieve shakers take less time and are more efficient when compared to other laboratory sieve shakers in the market, claims the company. Moreover, they do not require any top support for the sieves and handling is very easy due to their compact size.