Not all acid is the same, even when the chemical formula is identical. The purity grade determines where and how a reagent can be used safely and with reliable results.
Technical grade suits general industrial processes, where small purity variations don't compromise the final outcome — such as metal pickling or effluent treatment.
PA grade (analytical reagent) carries stricter analytical control, with low contaminant levels, making it suitable for laboratories and processes that require reproducibility.
PA-ACS grade meets American Chemical Society specifications, the most demanding standard, used in ultra-high-precision analysis and research.
At Hanaoka, every grade is manufactured and diluted to specification, with analysis in our own laboratory prior to release — ensuring the delivered product matches exactly the declared grade.