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HM-3930 Pin-Hole Dispersion Device (ASTM D4647): This test is used for evaluating clay soils for erodibility by flowing water through a small hole that is drilled through the compacted specimen. Refer to ASTM D4647 for complete information. Compaction using the Harvard Tamper Rod (H-4156.16 and the pin-hole test cylinder is typical. The test chamber has a unique clamping ring for holding the stainless steel mold to the base while compacting the sample.
Warranty Humboldt Mfg. Co. warrants its products to be free from defects in material or workmanship. The exclusive remedy for this warranty is Humboldt Mfg. Co., factory replacement of any part or parts of such product, for the warranty of this product please refer to Humboldt Mfg. Co. catalog on Terms and Conditions of Sale. The purchaser is responsible for the transportation charges. Humboldt Mfg. Co.
