Machinery Masters is a marketplace for new and used TOC and conductivity analysers, the instruments that measure total organic carbon and ionic conductivity to confirm water and process quality. A TOC analyser measures the organic content of a sample, while a conductivity analyser measures how easily it conducts electricity, a direct indicator of dissolved ions.

Together they are the core tests for pharmaceutical water quality, verifying purified water and water for injection against pharmacopoeial limits, and they also support cleaning validation and environmental monitoring. Buyers include utilities, QC and validation scientists, water-system engineers, and procurement teams. Browse verified sellers to compare measurement type, format, calibration, condition, and price before you buy.

Shop TOC & Conductivity Analysers by Type

TOC and conductivity analysers are available as benchtop laboratory instruments, online systems that monitor water loops continuously, and portable units for spot checks. Selecting the correct type keeps the measurement, format, and installation matched to your application. The main differences between configurations relate to whether the instrument measures organic carbon or conductivity, whether it is a laboratory, online, or portable unit, and the sensitivity and range it covers.

Benchtop TOC Analysers

Benchtop TOC analysers measure total organic carbon in discrete samples in the laboratory, using oxidation methods to convert organic carbon to carbon dioxide for detection. They suit pharmaceutical water release testing, cleaning validation, and environmental samples where laboratory measurement and full documentation are required.

Online and In-Line TOC Analysers

Online TOC analysers monitor total organic carbon continuously within a water system, giving real-time data from the purified water or water for injection loop. Continuous measurement supports GMP water monitoring and rapid response to excursions without waiting for laboratory results.

Portable TOC Analysers

Portable TOC analysers bring organic carbon measurement to the point of use for spot checks, cleaning verification, and troubleshooting. They deliver laboratory-relevant results in the field or on the production floor where sending samples to a central laboratory would slow the work.

Laboratory Conductivity Meters

Laboratory conductivity meters measure the ionic conductivity of a sample in the laboratory, indicating dissolved ion content and water purity. They are used for pharmaceutical water testing, buffer and reagent checks, and general quality control where accurate benchtop conductivity measurement is needed.

Online and In-Line Conductivity Analysers

Online conductivity analysers measure conductivity continuously within a water or process loop, providing real-time purity data. Installed in purified water and WFI systems, they give the continuous conductivity monitoring that GMP water quality control depends on.

Conductivity Sensors and Accessories

Conductivity and resistivity sensors, TOC oxidation modules, and calibration standards complete and maintain a TOC or conductivity system. Matching the sensor and standards to the application is essential to accurate measurement, so laboratories source these parts alongside the instruments.

TOC & Conductivity Analysers Brands on Machinery Masters

Machinery Masters lists TOC and conductivity analysers from established water analysis manufacturers, so you can source a specific make and model or compare comparable instruments across sellers.

Sievers
Shimadzu
Hach
Mettler-Toledo Thornton
Elementar
Metrohm
Endress+Hauser
Thermo Fisher Scientific
Analytik Jena
Xylem

TOC & Conductivity Analysers Applications and Uses

TOC and conductivity analysers are deployed across pharmaceutical, environmental, and process settings wherever water and sample purity must be measured against defined limits. Requirements depend on the water grade or sample, whether the measurement is laboratory or online, and the accreditation framework the site works within.

Pharmaceutical Water Quality

Pharmaceutical facilities use TOC and conductivity analysers to confirm that purified water and water for injection meet pharmacopoeial limits for organic carbon and conductivity. These two measurements are the core water-quality tests, so reliable, documented results are fundamental to GMP water systems.

Cleaning Validation

Pharmaceutical QC and validation teams use TOC analysis to verify equipment cleaning, measuring residual organic carbon in rinse and swab samples. Sensitive, reproducible TOC measurement provides the evidence that cleaning removes product and detergent residues to specification.

Environmental and Drinking Water Monitoring

Environmental and water laboratories use TOC and conductivity measurement to assess water quality against discharge and drinking water standards. Accurate organic-carbon and conductivity data support both monitoring and regulatory reporting.

Process and Utility Monitoring

Process and utility teams use online TOC and conductivity analysers to monitor water loops and process streams in real time. Continuous measurement keeps utilities within specification and flags excursions quickly, protecting product quality across the facility.

Frequently Asked Questions

What is TOC, and why is it measured in pharmaceutical water?

TOC, or total organic carbon, is a measure of the organic content of a sample. It is measured in pharmaceutical water because organic contamination can indicate a breakdown in water treatment or a contamination source, and pharmacopoeial standards set a TOC limit for purified water and water for injection. Measuring TOC confirms that the water is suitable for use as an ingredient, cleaning agent, or rinse.

What is the difference between a TOC analyser and a conductivity analyser?

A TOC analyser measures the organic carbon content of a sample, indicating organic contamination, usually by oxidising the carbon and detecting the carbon dioxide produced. A conductivity analyser measures how well a sample conducts electricity, which reflects its dissolved ionic content and inorganic purity. In pharmaceutical water they are complementary: conductivity checks ionic purity, and TOC checks organic purity.

What is the difference between benchtop and online TOC or conductivity analysers?

Benchtop analysers measure discrete samples in the laboratory with full documentation, suiting release testing and cleaning validation. Online analysers are installed in the water loop and measure continuously, giving real-time data and rapid detection of excursions. Benchtop suits laboratory testing and record-keeping, while online suits continuous GMP water monitoring, and many facilities use both.

What should I consider when buying a TOC or conductivity analyser?

Decide whether you need TOC, conductivity, or both and whether measurement is laboratory, online, or portable, then match the range and sensitivity to your water grade or sample. Check the oxidation or sensor technology; calibration and standards support; and, for regulated use, qualification and 21 CFR Part 11 software. For a used unit, verify sensor and module condition and calibration. Confirm the specification with the seller before you buy.

What is the difference between new and used TOC and conductivity analysers?

New instruments arrive with a manufacturer warranty, current software, and full documentation. Used and refurbished analysers offer significant savings from reputable sellers with documented service history and clear provenance. Because these instruments must read accurately for water release, verify the sensor, oxidation module, and calibration, and plan to requalify the instrument against your specifications before regulated use.

Where can I buy TOC and conductivity analysers on Machinery Masters?

Browse Machinery Masters for new and used benchtop, online, and portable TOC analysers and laboratory and online conductivity analysers from verified sellers worldwide. Use the search and filter tools to narrow by measurement, brand, and specification, then contact sellers directly to request calibration records, service history, and technical specifications before you buy.

TOC & Conductivity Analyzers

TOC & Conductivity Analyzers