Hanna Instruments equipment

About Hanna Instruments

Hanna Instruments is an analytical and scientific instrument manufacturer specializing in electroanalytical instrumentation. The company was founded in 1978 in Padova, specifically Limena, Italy, by Oscar and Anna Nardo, with the stated aim of making scientific testing equipment accessible and affordable. It is headquartered in Woonsocket, United States, and remains privately held by the Nardo family, currently led by Martino and Pamela Nardo, the children of the founders. The company has no parent organisation. Its work centres on measuring the electrical and optical properties of solutions: pH, conductivity, dissolved oxygen, turbidity and related parameters. That focus on electroanalysis distinguishes it from makers of general laboratory hardware.

Hanna Instruments product lines

The range covers pH meters and testers, conductivity and TDS meters, dissolved oxygen meters, turbidity meters, photometers and colorimeters, titration systems, multiparameter meters, process and inline instrumentation, electrodes and probes, reagents and calibration solutions, magnetic stirrers, and refractometers. Within that range sit named families a buyer will recognise: the pHep pocket testers, the GroLine line, the Checker HC pocket colorimeters, the edge multiparameter meter, the HI93 and HI95 series photometers, and the HALO wireless meters. These are the names that appear in the Questpair listings, which lets a replacement be matched to an existing method rather than approximated.

Several of these instruments do work that sits inside life sciences and biotechnology, and the connection runs through the measurements themselves. pH meters and electrodes support cell culture, where medium pH is held within a narrow band, and the same instruments monitor bioprocessing and biomanufacturing runs where pH, conductivity and dissolved oxygen are controlled parameters. Dissolved oxygen meters are central to fermentation and to any aerobic culture, so they are also used for microbiology. Conductivity and TDS meters feed into water quality control for the reagent water that molecular biology and protein purification depend on. Photometers and colorimeters perform the optical quantitation behind colourimetric and enzymatic assays, which places them near immunoassay and general molecular diagnostics workflows. Titration systems do the quantitative analytical chemistry that underlies formulation and quality control. The magnetic stirrers do sample preparation. In each case the instrument is the primary thing, a pH meter, a dissolved oxygen probe, a benchtop photometer, and the field it serves follows from what it measures.

What is listed on Questpair?

The Questpair catalogue lists 135 Hanna items from 12 verified suppliers and distributors across 7 countries. Prices run from EUR 17 to EUR 7.438. The average sits at EUR 853. That spread reflects the range itself, from pocket testers at the low end to process and titration instrumentation at the top. Used units account for 75 percent of the listings, with 33 new items listed alongside them.

Buying electroanalytical instrumentation used is a reasonable route because the measurement chain is re-established at each use through calibration against standard solutions, so a device's history matters less here than it would for a sealed, factory-calibrated instrument. Where a warranty is wanted, it is arranged in consultation for the specific listing. Calibration solutions, reagents, electrodes and probes appear in the catalogue alongside the meters, which matters because an electroanalytical reading is only as good as the probe taking it, and probes are consumable. Parts can be sourced via Questpair, and documentation for a specific model can be requested through Questpair, where specialists respond within the hour. The catalogue, spread across 12 suppliers, is deep enough that a specific series is usually present rather than only its nearest relative.

Questpair review of Hanna Instruments

Our take based on listings data and supplier feedback

Hanna Instruments occupies a specific niche among analytical instrument makers: it builds electroanalytical measurement hardware across a wide price band rather than concentrating at the high end. That breadth is what a buyer scanning the Questpair catalogue encounters first. The listings run from EUR 17 to EUR 7.438, which is the distance between a single-parameter pocket tester and a complete titration bench. For a lab replacing an existing instrument, that span matters more than any headline feature, because it means both the disposable pocket device and the capital bench instrument carry the same brand and the same electrode ecosystem.

The named product lines are the second reason the catalogue is usable rather than generic. Listings identify the edge multiparameter meter, the Checker HC colorimeters, the pHep testers, the GroLine range and the HI93 and HI95 series photometers by name. This is the practical difference between a maker's listings being searchable and being a pile of undifferentiated hardware. A buyer who runs a photometric method on an HI93-series instrument can find the same series rather than a visually similar substitute, and electrodes and probes listed alongside the meters can be matched to the connector and the method already in use. Electroanalysis depends on the probe as much as the meter, so a catalogue that keeps the two together is doing real work for the buyer.

Condition and price form the third axis. Used units make up 75 percent of the listings. For instrumentation of this kind the used route is defensible: a pH meter or a conductivity bridge is calibrated against standard solutions before each use regardless of its age, so the measurement chain is re-established by the operator rather than inherited from the seller. A buyer weighing a used unit against a new one is therefore mostly weighing price, and where warranty matters it is arranged in consultation for the specific listing rather than fixed across the catalogue. The new listings, 33 of the total, sit alongside the used stock for buyers who want current hardware.

What the catalogue does not resolve on its own is method fit, and this is where the breadth cuts both ways. Hanna's range is wide enough that two instruments carrying the brand can serve entirely different measurements, a turbidity meter and a titration system share almost nothing beyond the maker. The naming of lines in the listings is what makes this tractable: the field a buyer works in, water analysis, food testing, environmental monitoring or general laboratory measurement, maps onto specific series, and the series is visible in the listing. Spread across 12 suppliers in 7 countries, the stock is deep enough that a specific line is usually present rather than only its nearest relative, which is the condition under which buying used instrumentation actually works.

**Broad electroanalytical range in one catalogue**

The Questpair catalogue covers Hanna's full span of electroanalytical instrumentation, from pocket pH testers to bench titration systems and inline process probes, with 135 items from 12 verified suppliers and distributors.

**Used stock priced below new**

At 75 percent of the listings, used Hanna instruments are available at prices below their new equivalents, with the catalogue spanning EUR 17 to EUR 7.438.

**Named product lines, not generic substitutes**

Listings identify specific Hanna series such as the edge multiparameter meter, the Checker HC pocket colorimeters and the HI93 series photometers, so a buyer can match a replacement to an existing method rather than guessing at compatibility.