Gilson Aqua-Check is made in the USA, and an affordable choice for rapid, accurate, and reliable moisture tests on sand, aggregates, ores, coal, soils, and other materials with particle size up to 20mm. Samples can be quickly tested on-site, eliminating risk of moisture loss during transport. Portable units are easy to use, and meet ASTM, AASHTO and Florida DOT requirements. The device was evaluated by the Florida DOT and verified to meet FM5-507 DOT requirements.

A pre-weighed 20g sample is placed in the test chamber, along with a measured quantity of calcium carbide reagent. When the chamber is sealed and agitated for one to three minutes, free moisture in the test sample reacts with the reagent to produce acetylene gas.The integral pressure gauge registers 020% moisture by weight in 0.2% graduations. Moisture range can be doubled by halving the pre-weighed sample weight.

MAA-45 Aqua-Check 0-20% Replacement Pressure Gauge includes a certificate of calibration, and is also compatible with Speedy-brand MA-21A and MA-25 Moisture Testers. Due to shipping restrictions, additional reagent is sold in 10lb (4.5kg) cans. Material from these larger cans can be used to replenish smaller containers for field use. For areas where shipping of calcium carbide is cost prohibitive, the Gilson Aqua-Check is available in a complete kit with no reagent as MA-26X. Est. Ship Wt.: 15lb (7kg).