Potassium bromate ban: where it applies and what the chemical is still bought for
Most of the world has taken potassium bromate out of bread. The same salt is still a standard laboratory reagent, and the two facts are easy to confuse.
Technical Notes
Short, practical notes from the GCS supply desk — how to specify an order, what to read on a safety data sheet, and which chemistry fits which job.
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MAP fertilizer 11-52-0: the starter phosphate for difficult soil
The difference between the two ammonium phosphates is not the analysis. It is what happens to soil pH in the two centimetres around a dissolving granule.
DAP fertilizer 18-46-0: getting the phosphate where the roots are
Phosphorus barely moves in soil. That single fact decides everything about when DAP goes on, where it is placed, and how far it can sit from the seed.
NPK fertilizer ratios: what the three numbers buy you
Two bags at different prices are rarely the same purchase. Once you convert the ratio into kilograms of nutrient, the cheaper bag is often the dearer nitrogen.
Where to buy urea: six things to settle before the order goes out
Urea is a commodity, so the supplier decision is not really about the chemical. It is about which grade arrives, how it is packed, and what documentation comes with it.
Mining in South Africa: what it demands from a chemical supplier
Deep-level gold on the Witwatersrand, platinum in the Bushveld, coal in Mpumalanga, iron and manganese in the Northern Cape. Each one asks something different of the reagent supply behind it.
Industrial mining chemicals: six checks before the order goes out
Most reagent problems on a mine site are not chemistry problems. They are packaging, bunding, paperwork and lead-time problems that were settled at purchase order stage.
Gold mining chemicals: the four a leach circuit runs on
Cyanide gets the attention, but a carbon-in-pulp circuit only works because three other reagents are doing their jobs at the same time. What each one is for.
Mineral mining chemicals: what actually decides the order
Collector, frother, leaching chemistry and flocculant are four separate decisions, and only one of them is really about price. What a plant should establish before it orders.
Need the chemical, not the article?
Send the grade, the quantity and the delivery point. GCS comes back with availability, packaging and pricing against that specification.
