Total organic carbon is the parameter that catches what conductivity cannot. Conductivity tells you about ions; TOC tells you about the organic material in the water — the residue of biofilm, degraded seals, tubing extractables, and whatever the feed water carried in. In pharmaceutical water systems, TOC is both a specification limit and an early…
Purified Water is the workhorse of pharmaceutical manufacturing. It appears in granulation, coating, buffer preparation, equipment cleaning, and analytical work, in volumes far larger than Water for Injection. Because it is produced on site and used everywhere, its system design determines both product quality and operating cost. This guide covers what the pharmacopoeia requires, how…
Water system validation exists to answer one question with evidence: does this system reliably produce water that meets its monograph specification, every day, under normal operating conditions? Everything else in the validation lifecycle — the protocols, the sampling plans, the documentation — is in service of that answer. This article walks through the sequence as…
Biotechnology manufacturing treats high-purity water as a raw material, and the quality of that water is decided long before the drug substance is purified. The traditional assurance model — daily or weekly grab samples analysed in the lab — was built around what the laboratory could deliver, not around what the water system actually does…
Water is one of the few utilities in a cleanroom that can carry contamination in from the utility side rather than the air side. Cleanroom water management therefore sits between two worlds: the environmental control program that governs particles and micro-organisms in the room, and the pharmaceutical water system that generates and distributes the water…
Pharmaceutical water quality control is not a single test. It is a group of measurements — conductivity, total organic carbon, microbial count, endotoxin, and a few physical parameters — that together decide whether water is fit for its intended use. Conductivity and TOC attract most of the attention because both can be measured online, but…