Hold every tank, drum and specification result against the solvent lot it describes.

Solvent manufacturers blend, distil and repack liquids such as acetone, toluene, isopropyl alcohol and thinners. The product is judged by numbers on a certificate: purity, water content, density, colour and distillation range. A lot that cannot show those numbers is hard to sell.

This software starts at the storage tank, because that is where lots begin and where they get mixed up. Each receipt, transfer, blend, recovery run and filling is posted to a tank and a lot, so a complaint from any customer leads to one named drum filling. No tank goes unrecorded.

The day opens at the tank farm. Operators dip the tanks, note temperatures and read the flow meters. Raw solvent arrives by road tanker or drum, is sampled at the gate and held until the laboratory releases it. Blending follows a recipe sheet of base solvent, co-solvent and stabiliser by weight, mixed in a vessel and recirculated. A distillation column handles recovered or crude stock, with cuts taken by boiling range and kept apart.

The laboratory runs density, water by Karl Fischer, colour and a gas chromatography purity check on each lot. Filling lines then pack drums, IBCs and cans, label them with hazard markings and weigh a sample of each run. Dispatch pairs every load with a certificate of analysis, a safety data sheet and a delivery note. Empty drums come back for reconditioning.