Whitehouse Sieve Standards No.20 (850 micrometer)

Whitehouse Sieve Standards No.20 (850 micrometer)

Whitehouse Sieve Standards offer a reliable and efficient method for calibrating No. 6 (3.35mm) and finer sieves with full traceability to NIST. Calibration can be completed in minutes without the hassle of shipping sieves out or taking them out of service. Regular checks with these standards help determine when sieves need replacement, ensuring consistent performance. Each set includes five single-use vials of precision glass beads, designed for a specific sieve size. One vial calibrates 8in or 200mm sieves, while larger sieves (up to 18in or 450mm) require 2-5 vials. The average aperture is easily determined using the included calibration graph.

Whitehouse is trusted by the Community Bureau of Reference (BCR) for producing standards for the European Community. These standards are traceable to NIST, NPL, and BCR. The soda-lime glass beads, with a specific gravity of 2.45, are highly spherical and certified for size using electroformed sieves, microscopy, and image analysis for accuracy.

For sieves with No. 20 (850µm) openings, the Whitehouse Sieve Standards include five vials, each containing 3.0g of calibration beads.

Features:

• Designed for calibration and testing of No. 20 (850µm) sieves
• Produced using NIST-traceable equipment
• Easy aperture reading with the included calibration graph

Included:

• Whitehouse Sieve Standards for No. 20 (850µm) sieves
• Calibration graph for quick and accurate readings

Specifications:

• Mesh Opening Size: No. 20 (850µm)
• Nominal Weight per Vial: 3.0g
• Number of Vials: 5