Mary Ann Sifter

Mary Ann Sifter

The original "Mary Ann" Sifter is renowned for efficiently separating particle sizes from No.4 to No.635 (4.75mm–20µm). It accommodates sieve stacks up to 26 inches (660mm) high without clamping, fitting both 8-inch (203mm) and 12-inch (305mm) diameter testing sieves.

During operation, the sieve stack is angled at 45 degrees and rotates while hardwood-faced cast aluminum hammers tap the sieves. This combined motion promotes rapid material passage. The enclosed cabinet controls airborne particles, with a reversible door for convenience.

Recent enhancements include a modified cam and rubberized hammer covers to reduce operational noise. A 99-minute digital timer controls testing cycles with ±1 second accuracy. The support stand also functions as a sieve storage rack.

For additional options, consider Gilson rotary lab sifters.

Key Features:

• Particle Size Range: No.4–No.635 (4.75mm–20µm)
• Sieve Capacity: Accommodates stacks up to 26 inches (660mm) high.
  • Full Height: (10) 8in/200mm Sieves or (6) 12in/300mm Sieves
  • Half Height: (20) 8in/200mm Sieves or (13) 12in/300mm Sieves
  • Intermediate Height: (11) 12in Sieves
• Sieve Frame Diameter: 8in (203mm), 12in (305mm), 200mm, 300mm
• Motion/Agitation: Rotary/Tapping, angled at 45 degrees for optimal separation.
• Clamping: Not required, simplifying setup.
• Digital Timer: 99-minute capacity with ±1 second precision.
• Noise Reduction: Modified cam and rubberized hammer covers.
• Enclosed Cabinet: Controls airborne particles; door can open from left or right.
• Included Accessories: Sifter unit (115V, 60Hz or 220V, 50Hz) and a versatile support stand/storage rack.
• Durability: Robust construction ensures long-lasting performance in laboratory environments.
• User-Friendly Design: Intuitive controls and easy sieve placement.
• Applications: Ideal for a wide range of material analysis in various industries, including aggregates, pharmaceuticals, and food processing.