Tween-20 Percent (w/v) Solution Calculator

Convert a % w/v Tween-20 solution into grams to weigh, g/L and molarity. Enter the percentage and the volume you are making.

% w/v = g per 100 mL

Concentration (% w/v)Volume (mL)

Tween-20 for 100 mL

10 g/L

Grams per litre

0.0081464 M

Molarity

1
% w/v means grams per 100 mL
1% = 1 g / 100 mL = 10 g/L
2
Mass for 100 mL
(1/100) × 100 mL = 1.000 g
3
Convert to molarity (÷ MW)
10 g/L ÷ 1227.54 g/mol = 0.008146 mol/L

Tween-20 (C58H114O26, MW 1227.54 g/mol). 0.05–0.1% Tween-20 in PBS/TBS is the universal immunoassay wash additive.

🔒 100% client-side — your data is computed in the browser and never uploaded.

Cite this tool

ToolJolt. Tween-20 Percent (w/v) Solution Calculator. ToolJolt Chemistry & Lab Tools; 2026. https://tooljolt.com

Tween-20 Percent (w/v) Solution Calculator for students, chemists and lab technicians. Enter your values and read a sourced, step-by-step result instantly, right in your browser.

About Tween-20 Percent (w/v) Solution Calculator

Convert a % w/v Tween-20 solution into grams to weigh, g/L and molarity. Enter the percentage and the volume you are making. The calculation uses % w/v = g per 100 mL. Why it matters: Getting a concentration right is the difference between a reaction that works and one that quietly fails. Weigh-out and dilution errors are among the most common — and most costly — mistakes at the bench. Before you trust the number, double-check: forgetting to account for hydrate water in the molar mass; confusing % w/v with % w/w; diluting concentrated acid by adding water to acid instead of acid to water. Everything is computed on your own device — nothing you enter is uploaded — so the tool is safe for unpublished sequences, proprietary formulations and sensitive measurements, and easy to cite in a methods section or lab SOP.

How to use Tween-20 Percent (w/v) Solution Calculator

1Enter your values: Concentration, Volume.
2Read the headline result and the supporting figures, which recompute as you type.
3Open “Worked example with your numbers” to see the substituted formula step by step.
4Copy the result, or use the cite-this-tool snippet for your methods section.

Why use Tween-20 Percent (w/v) Solution Calculator?

✓Built on a sourced, unit-tested formula for solution preparation
✓Links to related solution preparation calculators so you can finish the whole workflow
✓Copy-ready result and a one-line “cite this tool” snippet for your methods section
✓Designed for students, chemists and lab technicians who need a trustworthy answer fast
✓Instant, client-side result — works offline once loaded and keeps your data private

Frequently asked questions

Is this tween-20 percent (w/v) solution calculator free to use?+

Yes. It is completely free, needs no sign-up, and runs entirely in your browser — there are no usage limits.

What formula does it use?+

It uses % w/v = g per 100 mL The full worked example is shown beneath the result so you can verify each step.

What are the most common mistakes here?+

In solution preparation, watch for: forgetting to account for hydrate water in the molar mass; confusing % w/v with % w/w; diluting concentrated acid by adding water to acid instead of acid to water; not bringing the solution to its final volume in a volumetric flask. This tool shows the working so you can catch these before they cost an experiment.

Does my data leave my device?+

No. All computation happens locally in your browser. Nothing you enter — sequences, concentrations or measurements — is uploaded to any server, so it is safe for confidential work.

Can I cite this tool?+

Yes — use the “Cite this tool” snippet on the page. Many users link these calculators from methods sections, lab SOPs and teaching materials.

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