Sieves Selector - Humboldt Mfg
ASTM Test Sieves. Humboldt sieves are of the highest quality to ensure consistent fit, accurate specifications and durable construction. All our sieves comply with ASTM E11 and AASHTO M92; and, are given individual serial numbers for traceability. Certified sieves are also available as an option, please inquire. Reset All Filters. Covers & Pans.