A buffer is only as good as the salt it was made from — in volumetric work the reagent’s assay propagates directly into the result.
That is why laboratory salts are bought on certified assay and hydration state rather than on name, and why anhydrous grades are stored the way they are.
What we supply
Potassium Dihydrogen Orthophosphate, Sodium Acetate (anhydrous and trihydrate), Boric Acid, di-Sodium Tetraborate Decahydrate, Potassium and Sodium Carbonate, Sodium and Potassium Hydroxide pellets, Sodium Sulphate Anhydrous, Sodium Hydrogen Carbonate and o-Phosphoric Acid.
What we supply
Potassium Dihydrogen Orthophosphate AnhydrousSodium Acetate AnhydrousSodium Acetate TrihydrateBoric Aciddi-Sodium Tetraborate DecahydratePotassium Carbonate AnhydrousSodium Carbonate AnhydrousSodium Hydroxide PelletSodium Hydroxide SolidsPotassium Hydroxide PelletSodium Sulphate AnhydrousSodium Hydrogen Carbonateo-Phosphoric Acid
Phosphate buffers Potassium dihydrogen orthophosphate with phosphoric acid or a hydroxide covers the near-neutral range that most biological and pharmacopoeial methods are written around.
Borate and acetate ranges Borate buffers hold the alkaline range, acetate the acidic. Between them and phosphate, a lab covers the working pH span with three salt families.
Titrants and standards Sodium and potassium hydroxide in pellet form are the basis of standardised volumetric solutions — assay and carbonate content matter because they propagate straight into the titre.
Drying agents Sodium sulphate anhydrous, potassium carbonate anhydrous and calcium chloride dihydrate double as drying agents for organic work — the same anhydrous grade, bought for what it removes rather than what it contributes.