Humboldt Test Sieves for Construction Materials - Standard ASTM and AASHTO Certifications 

Humboldt Test 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.
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Humboldt Mfg. Co., located in the United States, is a long-standing, leading manufacturer and supplier of testing equipment used for evaluating construction and civil engineering materials.
For full details visit www.humboldtmfg.com