Hach equipment

About Hach

Hach is an American manufacturer of water quality analytical instruments, reagents, and test kits, founded in 1947 by Clifford and Kathryn Hach in Ames, Iowa. The company set out to simplify water analysis, turning laboratory chemistry into methods that field and plant operators could run reliably. It is headquartered in Loveland, in the United States, and is a subsidiary of Veralto Corporation, spun off from Danaher in 2023; Danaher had acquired Hach in 1999. Its instruments cover spectrophotometry, turbidimetry, colorimetry, online process analysis, and electrochemistry, each backed by matching reagents. The through-line across all of it is water: drinking water, wastewater, industrial process water, and environmental samples. For that reason the instruments are measurement platforms as much as standalone devices, built to pair with Hach chemistries and standards.

Which Hach instrument families are listed?

The notable product lines run deep. The DR Series spectrophotometers, DR900, DR1900, DR3900, and DR6000, form the colorimetric and UV-visible reading platforms, used for determining nutrients, metals, and disinfectants when combined with Hach reagent chemistries. Turbidity is covered by the TU5 Series and the portable 2100Q, instruments built for nephelometric measurement of suspended particles in water. Online monitoring sits with the sc Series sensors and controllers, the SC1000 and SC4500, and the EZ Series online analyzers, which run continuous process measurement rather than discrete samples. Electrochemistry is handled by Sension+ benchtop meters, HQ Series portable meters, and Intellical electrodes. Supporting all of this are the TNTplus chemistries, Stablcal turbidity standards, and the reagent and test-kit range that make the instruments into complete methods. On Questpair, these families appear as individual used instruments, so the family tells you the capability and the listing tells you the specific model and its condition.

Where Hach instruments do biological and environmental work?

Water analysis reaches directly into the life sciences and environmental fields. Spectrophotometry on the DR platform underpins colorimetric and UV-visible assays, and the same optical reading used for water chemistry supports nutrient and parameter determination in environmental monitoring and in the quality control of process water for biomanufacturing. Turbidimetry measures cell density and suspended solids, work that overlaps with microbiology and with the monitoring of fermentation and cell culture media. Electrochemistry meters perform pH, conductivity, and dissolved-oxygen measurement, parameters that sit at the centre of bioprocessing and of culture-medium preparation. Online process analyzers carry out continuous water-quality monitoring in utilities and in industrial plants that feed pharmaceutical and biotechnology production. These instruments are also used for drinking-water and wastewater compliance analysis, the regulatory backbone of environmental laboratories. A DR spectrophotometer running TNTplus chemistry is a nutrient-analysis instrument for environmental and process samples; a benchtop electrochemistry meter is a pH and conductivity platform for media and buffer work. The common thread is quantitative water chemistry serving fields from environmental monitoring to biomanufacturing quality control.

On Questpair

The Questpair catalogue for Hach is built from used instruments offered by verified suppliers and distributors. 96 percent of the listings are used. Prices range from EUR 38 to EUR 4.430. Listings are spread across 7 countries and 12 suppliers, which widens the range of models and configurations a buyer can reach. Because each listing is an individual instrument, condition, included electrodes or cuvettes, and calibration state vary from one to the next, and reading the listing itself is how a buyer confirms what is actually included. Where a part or accessory is missing, it can be sourced via Questpair, and a warranty on a given instrument is arranged in consultation for that specific listing. Manuals and documentation can be requested through Questpair, where specialists respond within the hour.

Questpair review of Hach

Our take based on listings data and supplier feedback

Hach occupies a specific place in laboratory instrumentation: it builds for water analysis rather than for the general bench, and the Questpair catalogue reflects that focus. The breadth of what is listed is the first thing worth examining. A buyer stocking or replacing instruments finds DR Series spectrophotometers across the line, from the portable DR1900 and DR900 to the benchtop DR3900 and DR6000, alongside TU5 and 2100Q turbidimeters and HQ Series portable meters. That spread matters because a water lab rarely runs one measurement type. Colorimetric determination of nutrients and metals, nephelometric turbidity, and electrochemical pH or conductivity readings tend to sit side by side in the same workflow, and the catalogue carries instruments for all three. Where a lab has standardised on Hach chemistries such as TNTplus, the matching DR spectrophotometer is the practical reading platform, and finding that platform used rather than new changes the cost of keeping a method running.

The pricing picture is the second point, and it is unusually clear here. Of the 78 items listed, 75 are used. Prices run from EUR 38 to EUR 4.430. That range covers a lot of ground: at the low end sit meters, electrodes, and accessories; at the high end, benchtop spectrophotometers and online analyzer components. 96 percent of the listings are used. For a procurement reader, the signal is that the Hach secondary market on Questpair is a used-instrument market, and the decision is less new-versus-used than which used unit and from which supplier. Warranty on any individual listing is arranged in consultation for that listing, so the comparison between a used purchase and a new one comes down to price against the terms the specific seller offers.

Supply is the third consideration. Listings come from 12 verified suppliers and distributors in 7 countries. For instruments where a particular DR model or a specific turbidimeter configuration is needed, drawing on suppliers across several markets raises the chance that the exact unit appears, rather than the nearest available substitute. It also means condition, included accessories, and calibration state vary from listing to listing, which is the correct level at which to assess a used analytical instrument: the model tells you the capability, the individual listing tells you what you are actually buying. A buyer should read each listing for whether electrodes, cuvettes, or reagent-specific adapters are included, since these determine whether an instrument is ready to measure on arrival. Parts, where something is missing, can be sourced via Questpair. Taken together, the catalogue rewards a buyer who knows which Hach method they need to support and treats the listing, not the model name, as the unit of decision.

**Depth across the water-analysis range**, The Questpair catalogue carries DR Series spectrophotometers, TU5 and 2100Q turbidimeters, and HQ Series portable meters, spanning the benchtop and field instruments a water lab actually runs.

**Used instruments priced well below new**, With 75 of the 78 listings sold as used, buyers reach Hach-grade measurement at prices from EUR 38 to EUR 4.430, against a new unit at full list.

**Supply from across Europe**, Listings come from 12 verified suppliers and distributors in 7 countries, which widens the pool of available models beyond any single national market.