Grid Sieves

Product Code : EL-ATLE-10476

Grid Sieves (code EL-ATLE-10476) are hand sieves used to determine the particle shape, flakiness index and elongation of aggregates. The set of 14 has aluminium frames with stainless steel rods of 5 mm diameter, giving slot widths from 50.0 mm down to 2.50 mm, and the sieves are made for hand sieving only.

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Specifications

What Are the Grid Sieves Used For?

Grid sieves have parallel bars instead of square apertures, so they separate particles by thickness rather than by overall size. After the sample has been divided into size fractions on ordinary test sieves, each fraction is shaken by hand on the grid sieve with the matching slot width, and the particles that drop between the bars are thin for their size. Weighing what passed the bars and dividing by the sample mass gives the flakiness index as a percentage. The 14 slot widths run from 50.0 mm to 2.50 mm, and the standards listed are EN 933-3, NF P18-561, UNI 8520-18 and NLT 354.

What to Specify When Ordering

• Quantity — the number of sets required.

Frequently Asked Questions

What are Grid Sieves used for?
They are used to determine the particle shape of aggregates, including the flakiness index and elongation, by hand sieving each size fraction over parallel bars.

Which slot widths are in the set?
The set of 14 has slot widths of 50.0, 40.0, 31.5, 25.0, 20.0, 16.0, 12.5, 10.0, 8.00, 6.30, 5.00, 4.00, 3.15 and 2.50 mm.

What are the sieves made of?
Each sieve has an aluminium frame and slots formed by stainless steel rods of 5 mm diameter, which give the parallel openings used for shape testing.

Can Grid Sieves be used in a mechanical sieve shaker?
No. They are suitable only for hand sieving, so each fraction is shaken over its grid sieve by hand.

How do grid sieves differ from square-mesh test sieves?
Square-mesh sieves grade particles by overall size, while the parallel bars of a grid sieve let through particles that are thin for their size, which is what the flakiness test measures.

Which standards are listed for the set?
The standards listed are EN 933-3, NF P18-561, UNI 8520-18 and NLT 354, and the 1997 edition of EN 933-3 is the one named.

OEM Manufacturer

The Grid Sieves are made by Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd) at its works at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests aggregate testing equipment for grading, strength, abrasion and shape tests for engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and can build equipment to an institution's own requirements. Tender and OEM enquiries are handled through the Tenders/OEM page.

Related Aggregate Testing Equipment

• Flakiness Sieve Set — set of 7 slotted steel sieves for flakiness index testing of 6.3 to 63 mm aggregate.
• Thickness Gauge — seven-slot flakiness gauge for aggregate fractions from 6.3 to 63 mm.
• Length Gauge Elongation Gauge — hard wood based elongation gauge with vertical metal studs for checking aggregate particle length.
• Shape Index Caliper — 200 mm aggregate shape caliper graduated in 0.05 mm, measuring 450 × 150 × 50 mm.

See the full Aggregate Testing Lab Equipment range or all Civil Engineering Lab Equipment.

Request a Quote

For this and other aggregate testing lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. To ask for a quotation, send the number of grid sieve sets required and your delivery location through the contact page, or use the Add To Cart enquiry button on this page.

Last updated: October 2026