
ASTM C231 Compliant Standard Direct Reading Concrete Air Content Tester. ASTM C231 Compliance: Fully compliant with ASTM C231 and BS 1881:106 standards for reliable testing. High Precision Measurement: Delivers 0.1% accuracy in 0-6% range and 0.2% accuracy in 6-20% range. Durable Aluminum Bowl: 7-liter special light aluminum alloy bowl with precision-machined interior. Complete Accessory Set: Includes tamper, scraper, funnel, calibration tube, U-tube, and measuring cup. 1-Year Warranty: Comprehensive 12-month warranty covering mechanical defects and controller repairs. Portable Design: Lightweight 10kg unit ideal for both field applications and laboratory use. OEM/ODM Support: Offers OEM and ODM services with flexible customization options. 100% Quality Inspection: Every product undergoes 100% visual and functional inspection before shipment.