Methods : DEF STAN 91-091, ASTM D975, IP 565, ASTM D7619, ASTM D7647, ISO 60970, ISO 4406, ASTM D6786, ASTM D7467, JIS B 9933:2021, IP 630 The AvCount3 is a fully-automated, bench-top particle counter for measuring particle size, distribution, and water droplets in aviation fuel, kerosine, biodiesel, and light oils. Its intuitive touchscreen interface, built-in dilution protocol, and 14 test methods make operation simple with minimal training. Real-time data display, sample tracking, and ASTM D6299-compliant results help improve fuel cleanliness monitoring and operational efficiency.