Mary Ann® Sifter

The original "Mary Ann®" Sifter has been a tool for separation of particles ranging in size from No.4 to No.635 (4.75mm to 20µm) for many years. It accommodates either 8in (203mm) or 12in (304mm) dia. test sieves, with stack heights up to 26in (660.4mm). The sieve stack is set into place inside the cabinet.

During the testing cycle, the sieve stack is positioned at a 45° angle, the sieves are rotated, and the wooden faced hammers tap the sieve frames to help assist passage of near-size particles. The enclosed cabinet helps control and confine the airborne respirable quartz, silica, and crystalline particles. Testing duration is controlled to ±1sec with a 99min digital timer.

Recent improvements to the “Mary Ann®” Sifter include a modified cam and rubberized hammer covers placed over the original hardwood tappers to help reduce operational noise. The support stand includes a sieve storage rack and wheels for portability.

For more particle separation options, view Gilson rotary lab sifters.

Features

• Accommodates a variety of sieve stack sizes up to 26in (660mm)
• No clamping is required
• Enclosed cabinets can be mounted to open from the left or the right

Included Items

• Mary Ann® Sifter
• Support stand

Accessories

• ASTM or ISO Test Sieves are available in a wide selection of frame diameters and heights, materials, and opening sizes

Related blogs:

• Sieve Analysis of Coarse Aggregate: From the Field to the Lab
• Characteristics of Aggregates: Shape, Size & Specific Gravity
• Simple Steps to Preserve & Extend Service Life of Costly Equipment
• Coarse Aggregate Gradation: Test Sieves or Screen Trays?