Cannon Instrument Company equipment

About Cannon Instrument Company

Cannon Instrument Company is an American manufacturer of viscosity testing and laboratory instruments, founded in 1938 in State College, Pennsylvania. The company was started by Dr. Michael R. Cannon, a Penn State University scientist and educator, who developed the Cannon-Fenske Routine Viscometer out of petroleum research carried out with his colleague Dr. Walter Fenske. That origin set the company's direction, and viscometry has remained its central field. Its product range covers viscometers, constant temperature baths, rheometers, physical property testers, flash point testers, densitometers, distillation testers, and viscosity and density reference standards. The firm remains headquartered in its founding city. On Questpair, Cannon instruments are listed by verified suppliers and distributors across 2 countries.

Cannon viscometer and viscometry product lines

The product lines run from the original glass capillary design to fully automated benches. The Cannon-Fenske Routine Viscometer is the classic manual instrument, a calibrated glass tube that measures kinematic viscosity by gravity flow. The automated side is built around the CAV series, the Cannon Automated Viscometer, with the miniPV and minAV lines offering smaller-footprint automated analysers. The CCS, or Cold Cranking Simulator, measures apparent viscosity at low temperature, a test closely tied to engine oil specification. The CT-500 and CT-1000 constant temperature baths provide the stable thermal environment that capillary measurement depends on, since viscosity readings are only reproducible when temperature is held precisely.

Viscometry is the measurement of how a fluid resists flow, and Cannon's instruments serve it across petroleum, lubricant, polymer, and pharmaceutical work. Where the catalogue carries rheometers, those extend the measurement to fluids whose flow behaviour changes with applied force, which is the province of rheology. The densitometers and density reference standards address a related physical property, and the flash point and distillation testers cover the wider set of physical property tests that fuel and lubricant laboratories run alongside viscosity.

Viscosity testing in life sciences and biotechnology

Viscosity measurement reaches into biotechnology and the life sciences, and several of these instrument classes are also used for that work. Biologic drug formulation relies on viscosity testing of protein solutions, because a high-concentration antibody formulation must stay injectable through a fine needle, and the viscosity of a monoclonal antibody solution is a formulation parameter that development teams track directly. Capillary and automated viscometers both serve this, and rheology characterises the flow behaviour of hydrogels, cell culture media, and other complex biological fluids. Density and physical property measurement supports formulation and quality control across bioprocessing and biomanufacturing, where a released batch must meet defined physical specifications. These applications sit beside the company's longer-standing petroleum and lubricant work rather than replacing it.

On Questpair

The Questpair catalogue for Cannon brings together the instruments and the standards that calibrate them. Prices run from EUR 31 to EUR 2.229. The condition split shows new and used units side by side: 35 percent of the listings are used. New and used or refurbished units are listed at lower prices than new, so a buyer choosing between them is weighing price against condition, and the individual listing is where to confirm the detail. Where a warranty matters, it is arranged in consultation for the specific listing. Documentation can be requested through Questpair, where specialists respond within the hour, and parts for a Cannon instrument can be sourced the same way. Buyers comparing conditions or looking for a matching reference standard will find both the analysers and the certified fluids in one catalogue.

Questpair review of Cannon Instrument Company

Our take based on listings data and supplier feedback

Cannon Instrument Company occupies a specific position in laboratory equipment: it is a viscometry house first, and the catalogue on Questpair shows that specialisation rather than a broad general-purpose range. The oldest name in the line, the Cannon-Fenske Routine Viscometer, is a glass capillary tube that measures kinematic viscosity by timing how long a fluid takes to flow through a calibrated section under gravity. That instrument dates from the company's founding and is still in use, which tells a buyer something about how settled this corner of measurement is. Against it sit the automated analysers, the CAV series and the miniPV and minAV lines, which run the same measurement principle under electronic timing and temperature control. Both appear in the Questpair listings, and the span between a manual glass tube and an automated bench analyser is a large part of what the catalogue covers.

That span is visible in the pricing. Across the Cannon listings, prices run from EUR 31 to EUR 2.229. The lower figure reflects the glassware and accessory end of the range, where a routine viscometer tube or a reference standard sits; the upper figure reflects the automated and instrumented systems. A buyer weighing the two ends is weighing two different ways of working: the manual method costs less to acquire and depends on an operator with a stopwatch and a constant temperature bath, while the automated method moves the timing and the temperature control into the instrument itself. The CT-500 and CT-1000 constant temperature baths, which also appear in the primary categories, are the piece that makes manual capillary viscometry reproducible, since kinematic viscosity is strongly temperature dependent.

The reference standards deserve separate attention because they are not instruments at all. Cannon viscosity and density reference standards are certified fluids of known value, used to calibrate a viscometer and to verify that it still reads true. A laboratory that buys a used Cannon viscometer and no standard has an instrument it cannot trust; the two go together. Finding both in one catalogue is the practical case for a specialist source over a general equipment listing.

On condition, the Cannon catalogue splits between new and used. 35 percent of the listings are used. For capillary glassware the distinction matters less than for the automated systems, since a glass viscometer either holds its calibrated dimensions or it does not, and a certificate settles the question. For an automated analyser a used unit is worth checking against a reference standard before it goes into routine work, which is where the standards in the same catalogue earn their place. Where a warranty is a concern, that is arranged in consultation for the specific listing rather than set centrally, so the individual listing is where a buyer confirms it. Parts can be sourced via Questpair when a used instrument needs them.

**Viscometry depth across the full range**

Cannon Instrument Company has built viscometers since 1938, and the Questpair catalogue reflects that range, from Cannon-Fenske glass tubes to CAV automated analysers, listed by 3 verified suppliers and distributors.

**Reference standards alongside the instruments**

The catalogue carries Cannon viscosity and density reference standards, the certified fluids laboratories use to calibrate and verify their own measurements, not only the testing equipment itself.

**New and used in one place**

Of the Cannon listings on Questpair, 35 percent of the listings are used, with the remainder giving buyers a direct choice between conditions at a single source.