Ohaus laboratory equipment

Buying guide

Choosing an Ohaus laboratory balance

The first decision is readability, and with Ohaus it is also the decision that splits the catalogue. Fix the decimal places from your method's tolerance before you look at anything else: four or five decimals point you at Explorer or Pioneer, one to three at Adventurer or Scout. Only then weigh capacity, because an analytical head that resolves 0.1 mg will carry a few hundred grams at most, and a precision balance that clears several kilograms cannot read below 0.001 g. Buying for the wrong end of that trade is the common mistake in this range.

Calibration is where Explorer and Pioneer part on a used unit. An Explorer calibrates internally with a motorised weight, so verify that mechanism actually cycles and settles; a Pioneer calibrates externally, so confirm the correct class weights come with it or budget for them. On any used balance of this maker, check the draft shield for cracked or missing panels, confirm the levelling feet and bubble are intact, and ask the seller for a recent linearity and repeatability check across the range, not a single point. The load cell is the part with a service life worth asking about, and drift or a sticking pan points at it.

On price, the band is wide because spares list alongside instruments, so read what a low figure actually covers before reading it as a bargain. A used Explorer often sits below a new lower-spec Pioneer, which makes condition worth more than series name here. Compatibility traps are mostly Ohaus's own accessories: density kits, in-use covers, auxiliary displays and printer cables are specified per series and per generation, so confirm a kit matches the exact model rather than the line. Where a used listing needs a weight set or a replacement shield, those parts can be sourced through Questpair, and a warranty is arranged in consultation on the individual listing.

Which Ohaus weighing series are listed?

Among the listings that specify a type, the intersection is built from analytical balances, precision balances, general laboratory scales, and smaller counts of density determination and parts counting units. The series map onto these cleanly. Analytical work, readability to four or five decimal places, belongs to Explorer and Pioneer, Ohaus's enclosed-chamber lines with draft shields. Precision weighing, one to three decimals over a larger capacity, is where Adventurer and Scout sit; the Adventurer carries a colour touchscreen and internal calibration, the Scout a simpler keypad for teaching and routine labs. Ranger and Defender are bench and floor scales rather than balances, and turn up here where a listing classes them as a laboratory scale. Navigator and Valor are portable, Navigator for the lab, Valor for washdown and food handling. The density determination entries are usually an Explorer or Adventurer fitted with the maker's density kit rather than a separate model.

Where the Explorer and Pioneer diverge

The deciding specification across the Ohaus range is readability against capacity, and the two analytical lines show it best. An Explorer analytical head reads to 0.1 mg with capacities around 120 to 320 g and adds automatic internal calibration, a motorised draft shield on some models, and a wider menu set. Pioneer covers the same readability band but with external or semi-automatic calibration and a fixed shield, which is why it lists below the Explorer for the same decimal places. Step down to precision and the trade reverses: Adventurer and Scout read to 0.001 or 0.01 g but carry capacities from a few hundred grams up to several kilograms, the figure that matters when you are weighing bulk reagent rather than a sample. For parts counting, the deciding number is the smallest piece weight the balance can resolve, which ties back to readability again; a Scout counting head and a Navigator differ mainly in how fine that floor sits. Match the decimal places to the tolerance your method states, then confirm the capacity clears your heaviest routine load, because an analytical head that reads to 0.1 mg will top out long before a precision balance does.

How price and condition break down

Across these listings 56 percent are used. The price band runs from EUR 1 to EUR 14.505, and the two ends describe different things. The floor covers draft shield panels, calibration weights, pan supports and other spares that carry a listing of their own. Complete balances cluster well above that, with the enclosed analytical lines sitting highest and the portable precision scales lowest. The average across everything is EUR 1.764. A used Explorer in working order typically lists below a new Pioneer of lower specification, so condition and series both pull on the final figure. Used and new units appear side by side here; the used ones are listed at lower prices than their new equivalents.