The GA-8 GilSonic UltraSiever

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™ uses up to seven 8in （203mm） diameter full-height test sieves. Woven wire sieves in the 1/4in to No.635 （6.3mm to 20?m） range or special 8in （203mm） diameter precision sieves with electroformed mesh in the 150?m to 5?m range can be used for ±2?m precision. Sample capacities are more than seven times those of our popular GA-6 AutoSiever™. A sample size of 10g or less is typical for precision electroformed sieving below 20?m. Coarser samples range up to over 100g, depending on mesh sizes and number of sieves used. Particle size range is extended to 1/4in （6.3mm） top-size for many materials. Typical sieving time is 1-5 minutes.

Maximum amplitude is determined in manual mode by viewing action of largest particles in each sample type. Each program has timed segments for build-up to desired maximum amplitude, hold time at maximum, then down-ramp to zero. A 0-99 digital LED displays amplitude. Additional GA-8 controls include switches for seven pairs of horizontal tappers positioned to tap on selected sieves. Switchable vertical tappers operate as one or two pairs. A single pair is sufficient for most powder separations. Two pairs are used for samples containing larger particles. Ten-program memory stores all settings and sequences.

Vertically-hinged acrylic doors enclose the sieve chamber. Sample material is contained by flexible top and bottom diaphragms. The stack is sealed when the upper enclosure is lowered. Upon test completion, fines are recovered from the bottom diaphragm. Acrylic spacers are required when using less than seven sieves or for viewing sieving action.

The GA-8 includes top and bottom sieve stack adapters, four diaphragms for top or bottom use, two acrylic spacers, one double-height acrylic spacer, and twelve polyurethane sieve Seal Gaskets. GAA-5 Assembly for Extra Sieve Stack includes necessary components to assemble a second sieve stack for faster processing. Sieves are ordered separay. Dimensions: 19x19x41in （483x483x1,041mm）, DxH. Est. Ship Wt.: 150lb （68kg）.

Purpose:Research

Model:GSF3-GA-8