Marsap services offer fuel colour analysers. The pac petrospec dt 100c diesel colour analyser is a portable, almost maintenance-free instrument for analysis of dyes/markers in fuel. This is useful for petroleum companies to check for contaminated/off-spec products and for manufacturers of dyes/markers. The instrument is simple to use and gives quick and accurate results within seconds. Besides this, automatic distillation analysers, automatic flash point analysers, automatic viscometers, automatic cloud pour point analysers, automatic freezing point analysers, automatic nitrogen and sulphur analysers, portable octane analysers, jet fuel thermal oxidation tester [jftot], hot liquid process simulator hlps [for heat exchanger and anti-foulant studies], and different scale loop system for studies on pipeline scale formation.