Hydrogen peroxide 50%
The word stabilised is a test result, not an ingredient; the acidity limit has a floor as well as a ceiling; and the vent in the cap is the reason the drum is still a drum.
Knowledge centre
Short, specific answers to the questions that actually decide a bulk purchase — what a number on a certificate means, how it is measured, what changes it in storage and transit, and what to write on an enquiry so the quotes you get back are comparable. Written by the desk that sources the material.
The word stabilised is a test result, not an ingredient; the acidity limit has a floor as well as a ceiling; and the vent in the cap is the reason the drum is still a drum.
One standard covers both forms, and the solid is not the cleaner one. The arithmetic of buying water, and what each form actually costs once it reaches the plant.
A grade name is a contract term, and most grade names are not defined by any document at all. Which ones are, who defines them, and what to write instead.
Two strengths that look a point and a half apart, and the difference between them is not where buyers think it is. What the standard actually specifies, what sets the fuming rate, what a tank can be made of, and the one concentration line in Indian law.
A quotation is a stack of separate decisions, and two quotes that look far apart may differ in only a couple of them. What each layer is, who bears it, and which part of the tax is not a cost at all.
LABSA is an acid, not a surfactant, until it is neutralised. SLES and SLS are sold at wildly different active matter. Why a kilogram-for-kilogram swap between any two of the three is the most expensive mistake in a detergent raw-material enquiry.
A COA is a first-party statement about a sample, not a guarantee about a consignment. The eleven things a usable one states, the four ways a true COA can still be useless, and the clauses that fix it in the purchase order.
One reagent is self-limiting and the other is not — within conditions that matter. The dosing arithmetic, the sodium claim that does not survive it, and why soda ash eats itself when the hardness has to stay in the water.
Epsom salt is half water by mass. Kieserite is not. The arithmetic that makes two magnesium sulphate quotes comparable, what the FCO really specifies, and the tank mistake that blocks a drip line.
Why a tonne of bleaching powder is not a tonne of disinfectant, what the iodometric titration actually measures, and the three reactions that quietly spend your available chlorine in the godown.
A price per wet tonne of 48% lye and a price per tonne of flakes are not comparable numbers. The conversion, the freight trap, and why 40% lye freezes at a higher temperature than 50%.
These articles are general technical guidance, not a specification and not advice for a particular installation. Figures quoted from Indian Standards and the UN Model Regulations are cited so you can check them against the current edition. Always work to the safety data sheet and certificate of analysis for the lot you are actually handling.
Sourcing desk
If you are specifying a grade, comparing two quotes that are not comparable, or trying to work out why a delivered assay came in under the certificate, send the detail to the sourcing desk. Velora is a bulk supplier and trader, not a manufacturer, and we will tell you what the producer can and cannot certify.