Bench — Lab Notebook & Solution Calculator

Bench — Lab Notebook & Solution Calculator — a premium, 100% offline digital tool by Aceplore. Runs entirely in your browser: no accounts, no subscriptions, your data never leaves your device.

A private, offline lab notebook with the solution maths built in — mass from molarity, C₁V₁ = C₂V₂ dilutions, iterated serial dilutions and unit conversions that round-trip — every figure showing its working, and every run, sample and reagent kept on your own machine — 32 tools in one.

32 built-in tools in one app. Experiments with a detail page, a planning view, run records and a deviation log; a protocol library with numbered steps and a run mode that walks them one at a time; a sample register with individual records, a lineage view showing what each sample was derived from, and storage locations; reagent inventory with per-reagent records, an expiring-soon list and a hazard summary; and the solution maths — mass from molarity and volume, a C₁V₁ = C₂V₂ dilution that reports both the stock volume and the diluent volume and refuses to invent a negative one when you ask for something stronger than your stock, a serial dilution that iterates the series tube by tube rather than approximating it, percent solutions in w/v, v/v and w/w, a record of solutions prepared, buffer recipes and a unit converter that round-trips; plus equipment and calibration records, a waste log, reports, CSV export and a How it's computed page.

Molarity. The mass to weigh out, with the units converted for you and purity applied if the reagent is not 100%. A molecular weight of zero is refused rather than divided by.

Runs & Deviations. A record per run, and a separate deviation log — because the difference between the protocol and the bench is the thing you will want later.

Expiring & Hazards. What is about to expire, and what in your inventory carries a hazard — both computed from the records you keep.

What's included:

• Bench.html
• Quick-Start-Guide.html
• How-To-Use-Guide.html
• README.txt
• LICENSE.txt

Includes a personalized welcome wizard, an interactive guided tour, a ⌘K command palette, light/dark themes with 8 accents, and one-click JSON backup & restore.

Bench is a planning, record-keeping and calculation tool for students, researchers and teaching staff. Every figure and every formatted output it produces is derived by a standard published method from what YOU enter, and the rules behind it are editable because academic conventions are set locally rather than universally. Your institution's regulations, your funder's terms and your supervisor's, journal's or examiner's requirements always take precedence over anything shown here — check them, and confirm anything that carries a consequence before you rely on it. Nothing here is a guarantee of a grade, an award, an approval or a result, and none of it is academic, financial or legal advice. You are solely responsible for your own academic and research decisions.