ASTM D1218 & ASTM D2140
The automated RA-620 measures the critical angle of optical refraction. It provides a temperature resolution to 0.01 °C, as well as a 5 decimal refractive index resolution and a measuring range from 1.32000 ~ 1.58000 nD. Meets ASTM D1218/D1569/D1807/D1992/D2140/D4056/D4095, ICUMSA GS 4/3-13 and SPS-3, OIML R124 and ISO 1743 requirements. Applications include beverages, foods, petroleum, pharmaceutical, alcoholic beverages, and more.