The phrase "high sulphur" means that something contains a large amount of sulphur, a chemical element known for its strong smell and yellow color. Full definition
«Bitumen sells at a substantial discount because its heavy, highly viscous nature, and high sulphur content make it more costly to refine,» explained Hughes in the report. (resilience.org)
Some of us need to avoid high sulphur foods or medications. (healinghistamine.com)
Three major factors are responsible for increased sulphur deficiency: a) intensified cropping systems worldwide demand higher sulphur nutrient availability; b) increased use of high - analysis, sulphur - free fertilizers, and c) reduction of sulphur dioxide emissions, particularly in developed regions, reduces atmospheric sulphur deposition, a «natural» sulphur source. (sulphurinstitute.org)