Moisture analysers

Buying guide

What decides a moisture analyser is the heating method set against the sample it has to dry. A halogen lamp reaches temperature fast and suits routine quality control on food, grain and plastics; an infrared or ceramic element heats more gently and holds a flatter profile, which matters for a sample that scorches or oxidises before its water is gone. Read the maximum temperature and the drying modes together, because a single-setpoint unit and a stepped or ramped profile behave differently on the same material, and a product that forms a skin will trap moisture under a hard surface unless the profile is tuned for it.

Readability is the second number to pin down, since a moisture analyser is a balance first. A 0.001 gram model measures to around 0.01 percent moisture, a 0.0001 gram model an order finer, and the finer reading only earns its price when the sample size and the required precision justify it. Check the weighing range as well, because a large pan takes a representative portion where a small one forces you to trust a few grams to stand for a batch.

On a used unit, the balance is where attention belongs. The load cell drifts, so a seller should show a recent calibration or the unit should accept external reference weights, and the heating element and its reflector degrade with hours of use, which shifts the drying endpoint quietly rather than failing outright. A data management system or a listing that mentions logging and result storage is worth more in a regulated lab, where the audit trail carries as much weight as the measurement.

Across the listings, price spans a wide band, from EUR 18 to EUR 16.196 with an average near EUR 2.319. What a unit costs tracks readability, heating control and build: a basic halogen model with coarse readability is affordable and sits near the bottom, while a fine-resolution instrument with programmable profiles and data handling sits at the top. Radwag, Ohaus, Mettler Toledo, CEM, Sartorius hold most of the listings, which keeps parts and reference data easy to find and lets a buyer on a budget compare like for like. Refurbished and used units are listed for sale below the new price, so a lab weighing cost against a current calibration record has real room to choose.

Types of Moisture analysers

Which instrument types appear in the moisture analyser listings?

Among the listings that specify a type, the field splits between dedicated moisture analysers and the balances they are built on. A moisture analyzer is a self-contained unit, a balance with a heater over the pan, and it reports percent moisture directly rather than a mass. Alongside it sit the laboratory balance, the precision balance and the laboratory scale, which measure mass alone and appear here because a moisture result is a weighing result at root; a buyer comparing the two is deciding whether the drying stage is worth paying for or whether a separate oven and balance already cover the work. An analytical instrument in this listing set is the finer-resolution end of that same range, and a data management system is the software and logging layer that captures runs for a quality record. The heating method separates the moisture analysers from each other more than any brand name does: halogen for speed, infrared and ceramic for gentler profiles.

What moisture analysers measure in biotechnology and life sciences?

Moisture content is a release specification across these fields, so the instrument earns its place well beyond food and materials testing. In biomanufacturing and bioprocessing, loss-on-drying checks confirm the residual moisture of a lyophilised cake, and a lyophilized biologic moisture content that runs too high shortens shelf life, which is why the measurement sits on the batch record. The same gravimetric analysis fixes the water activity feeding into cell culture media preparation, where a hygroscopic powder's true solids determine the final concentration. In molecular biology and genomics, moisture in a dried reagent or a buffer salt shifts its mass, so a laboratory balance moisture content check underpins accurate formulation, and pharmaceutical excipient moisture analysis is a routine step before protein purification and immunoassay reagents are made up. The work is the same each time, water driven off by heat and read as mass loss, applied to whatever the field needs kept dry.

Brands behind the moisture analyser listings

Radwag, Ohaus, Mettler Toledo, CEM, Sartorius account for most of what is listed. Their presence works in a buyer's favour: these are long-running product lines, so spare heaters, pans and calibration weights are straightforward to source via Questpair, and published specifications make it easy to line up readability and temperature range model against model before buying. A lab standardising on one maker can keep a consistent result across benches; a lab on a tighter budget can still compare a Radwag or Ohaus unit directly against a Mettler Toledo or Sartorius one on the numbers that matter.

What condition and price look like here?

Of the listings, 21 percent are used, the rest spanning new and refurbished stock. Prices run from EUR 18 to EUR 16.196, averaging around EUR 2.319. The spread covers everything from an entry halogen model to a fine-resolution instrument with programmable drying and data logging, and used and refurbished units are listed below their new equivalents, so condition and specification both move the figure.