Cloud point and pour point are indicators of the lowest temperature of utility for petroleum products. The sample is periodically examined while it is being cooled in the cloud and pour point apparatus. The highest temperature at which haziness is observed (cloud point), or the lowest temperature at which movement of the oil is observed (pour point), is reported as the test result.
"Conforms to ASTM D97, D2500 and related specifications Compact four-place portable chamber Mechanically refrigerated models with factory preset cold baths"
; ISO 3015, 3016; DIN 51597; FTM 791-201; NF T 60-105