Choosing a lab balance in the lab balances scales space means balancing precision, capacity, and condition. The A&D FX-300iN checks the first two boxes with 0.001g readability and 320g capacity, but this unit arrives as a new open-box item with some quirks. Here is what matters before you buy.
Quick Verdict
At USD 330.00, this A&D electronic precision balance delivers analytical-grade weighing at a straightforward price. It offers legal-for-trade status, high-resolution results, and a quick 1-second stabilization time, making it suitable for labs that need repeatable measurements without waiting for the display to settle.
Who It Suits
This is a strong fit for biological laboratories and other settings that need to weigh small samples with high confidence. The 0.001g readability means you can detect milligram-level changes, while the 320g capacity covers common lab sample sizes. If your workflow involves frequent, relatively small weighings and you want fast throughput, the fast stabilization is a real bonus. It is less ideal for someone who insists on factory-sealed retail packaging or printed instructions, because this unit is new open-box and the manual is only available online.
What Stands Out From the Listed Details
Legal-for-trade designation is notable: it means the scale is built to meet commercial weighing standards, which matters if your measurements are used for billing or regulatory purposes. The 0.001g readability is similarly important for analytical chemistry and formulation work. Add the 1-second stabilization time and you get a balance that doesn't slow you down between samples. The seller describes the unit as assembled for a marketing video, so it presents as new open-box rather than used-heavy-duty.
Trade-Offs to Keep in Mind
The obvious compromise here is packaging and documentation. There is no box, no printed manual, and a company asset tag remains on the bottom. The seller says directions are missing, but you can download them digitally online, so this is manageable if you are comfortable with PDFs. For a lab with strict storage or audit requirements, the missing original box could be a hassle.
A&D Electronic Precision Balance Scale Model FX300iN
This unit is listed at USD 330.00 and described as new open-box. It carries the A&D brand, is categorized as an analytical balance, and is intended for biological laboratory use. The scale offers a 320g capacity, 0.001g readability, and 1-second stabilization. One concrete reason to choose it: you get legal-for-trade analytical weighing precision at a clear, fixed price. One concrete limitation: the original box and paper manual are not included, and the seller notes an asset tag on the bottom, so you are accepting an open-box unit with a small cosmetic attachment.
Bottom Line
For shoppers who need a dependable analytical balance and are willing to download the manual, the A&D FX-300iN at USD 330.00 is a compelling choice. Its readability, capacity, and stabilization speed align well with everyday lab weighing tasks. Just factor in the open-box realities before you commit.
