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Adjustable seating with a choice of back support.
Height-adjustable grey vinyl padded swivel stool with a welded footrest ring. Choose a backless design or an adjustable padded backrest. Both models offer a 24-30 inch adjustable seat height and a 360 degree swivel.
The round seat sits on a steel pan, with a grey steel frame and metal glides. The welded footrest ring provides a place to rest your feet.
DOCUMENTATION YOU CAN CHECK
Explore NPS warranty coverage, independent test results, emissions documentation and safe-use guidance before you choose.
10-year warrantyOriginal-user manufacturing-defect coverage. Terms and exclusions apply.Read warranty terms ↗
Upholstery test documentationTB117-2013 cover and filling samples reported conforming; see full scope.Read component report ↗
Low-emissions coverage6500 padded stools are included in the low-emitting seating bracket. Certificate expires August 2027.View MAS certificate ↗
Safe setup & useFollow the 6500 rotary height-adjustment procedure and 6524HB backrest installation instructions.Read assembly instructions ↗
Upholstery results apply to the stated cover and filling samples, not finished-stool fireproof certification. MAS includes the 6500 padded-stool category (August 2026-August 2027). Full PDFs open in a new tab.

Manufacturer-listed lead time: 1-2 days
Not a delivery guarantee. Availability, dispatch and freight timing are confirmed with your quote.
Static-load documentation: 6524H passed a 500 lb seat load held for 24 hours. Read the complete static-load report. This is a static seat test, not a dynamic user or footrest rating.
Both have the same 24-30 inch seat height range.

6524H with a padded seat and footrest ring.

6524HB adds a padded adjustable backrest.

Chrome cap and threaded height-adjustment detail.

Close view of the grey vinyl seat and steel seat pan.

Footrest ring and metal floor glides.

Backrest assembly shown for the 6524HB configuration.
Use the 6500-specific instructions for height adjustment and backrest installation. Check bolts before use and periodically. Clean with mild soap and warm water, then dry.
Both models adjust from 24 to 30 inches at the seat and swivel 360 degrees. Check your work surface height, knee clearance and foot support before selecting a stool.
6524H is backless. 6524HB includes a padded backrest that adjusts 2 inches up and down and 2 inches forward and back.
Place the stool on an elevated sturdy surface. Grip the chrome cylindrical cap beneath the seat with your thumb and index finger, maintaining your grip as you rotate the stool to the desired height. Keep fingers clear between the cap and frame. Follow the complete 6500 assembly instructions.
A round grey padded vinyl seat sits on a steel seat pan. The grey steel frame has a welded footrest ring and metal glides.
The 6524HB backrest requires installation using the supplied hardware. Follow the 6500 instructions and check bolts before use and periodically. Use the stool on a flat, stable, dry surface. Do not stand, rock or put your full weight on the footrest; stop use if damaged or unstable.
A Bureau Veritas report records a 500 lb static load on the 6524H seat for 24 hours, with a passing result. It is a static seat test, not a dynamic user or footrest rating.
Use mild soap and warm water with a soft cloth or nonabrasive sponge, then dry. Avoid harsh chemicals, abrasive pads, ammonia-based cleaners and excessive heat. Test a new cleaner on an inconspicuous area first.
NPS provides a 10-year original-user manufacturing-defect warranty, subject to its terms. NPS requires dealer authorization for returns or repairs. Start all return requests through Blue Tiger Scientific at info@bluetigerscientific.com. See the full policy and warranty for details.
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