Classical wet chemistry underwrites the instruments: the standards an instrument is calibrated against are prepared with these reagents.
Which is why analytical reagent grade is a documentation standard as much as a purity one — assay, and a certificate that ties this lot to it.
What we supply
Titrimetric reagents (Silver Nitrate solid and 0.1 N, Potassium Iodide, Potassium Thiocyanate, Iodine Resublimed), complexometric reagents (EDTA and its disodium and magnesium disodium salts), gravimetric precipitants (Dimethylglyoxime, Ammonium and Sodium Molybdate), indicators (Bromothymol Blue), and supporting reagents including Copper (II) Sulphate, Ammonium Ferric Sulphate, Ferric Chloride, Zinc Dust and o-Phthalaldehyde.
What we supply
Silver NitrateSilver Nitrate Solution 0.1Potassium IodideAmmonium MolybdateSodium MolybdateCopper (II) SulphateAmmonium Ferric SulphateDimethylglyoximeo-PhthalaldehydeZinc (Metal) DustEDTAEDTA Disodium SaltEDTA Magnesium Disodium SaltBromothymol Blue pH IndicatorBrucineIodine ResublimedMercuric AcetateMercuric Sulphate PurifiedSilver SulphatePotassium ThiocyanateFerric Chloride AnhydrousSodium Formaldehyde Sulphoxylate
Argentometric titration Silver nitrate — as solid or as standardised 0.1 N solution — with thiocyanate and ferric indicator is still the reference method for chloride, long after instruments could do it.
Complexometric titration EDTA and its salts remain the standard route to water hardness and metal-ion determination, with the indicator chosen for the metal being titrated.
Gravimetric precipitants Dimethylglyoxime for nickel, molybdate for phosphate — reagents that pull an analyte out as a weighable solid of known composition.
Method reagents Whole methods depend on a single reagent: mercuric sulphate and silver sulphate for COD, mercuric acetate and ammonium sulphate for Kjeldahl, copper sulphate for Fehling and Biuret, iodine for iodometry and Gram staining.