ASTM D4294 XRF Sulfur Analyzer 1. XRF Sulfur Tester 2. Standard: ASTM D4294 ... : 7ppm-5% or customized ASTM D4294 XRF Sulfur Analyzer The XRF Sulfur Tester is specially designed to determine ... 60, 120, 240, 300, and 600 s at random;5. It can make determination automatically for single sample. Measurement ... 2, 3, 5, 10, and 50 times at random; it will show average value and standard deviation at end ...