Molarity

The Molarity App from Sigma-Aldrich(R) is a chemistry calculator tool that generates lab-ready directions describing how to prepare an acid or base solution of a specified molarity or normality from a concentrated acid or base solution. A second tab includes a general molarity function that calculates the mass of any reagent needed to prepare a given volume of solution of desired molarity. A third tab features a stock dilution function that calculates how to dilute a stock solution of any known molarity to your desired volume and molarity.

Category	Price	Seller	Device
Utilities	Free	Sigma-Aldrich	iPhone, iPad, iPod

Features:
- Calculates molarity and normality for common commercial acid and base solutions by auto-populating density, formula weight and weight percentage.
- Users may input lot-specific certificate of analysis values for density and weight percentage.
- The Acid and Base instructions link to Sigma-Aldrich website/mobile website to display relevant acid or base products.
- General molarity and solution dilution options feature molar, millimolar, micromolar, picomolar and femtomolar concentration options.
- The iPad version includes option to save and email acid and base solution preparation instructions.

Notes:
Normality calculations assume reactions based on H+ or OH- ions.
Concentration of 56.6% ammonium hydroxide is equivalent to 28% ammonia (NH3).
Additional calculation details may be found with online web version at http://www.sigmaaldrich.com/molarity.

Reviews

good start
Robi09

need to add feature that allows you to start from NaOH pellets for example.

Nice
Shawn.Wyatt

It looks to be a good start, now expand the chemicals.

Excellent app
Pinero27

Must have if you are a chem grad student, you avoid the sitting down and calculate concentrations by hand. Although they should include ppm and ppb concentration in the stock dilution section.

A nice start!
hkgamer

I can see this becoming a very useful tool in the lab. How about adding a molecular weight calculator that takes a molecular formula and returns the MW? I've always wanted one of those.

Very good app with room for improvement
Lenin Dominguez

I like this app. I am in favor of know and understanding how this calculations are performed. However, there are times when only e result is important. This app does a great job in the latter case. Adding other chemicals besides acids or bases (think DMSO, DMF, glycerol, etc.) would make it even better and more useful.

Very limited
Kirkkerekes

Only has a handful of chemicals available. Very common items like sodium bicarbonate and citric acid are not available.

Your hindering your own app
Mikeyswood

Please make the acid/base selection field optional. When I have an acid not on there it slows me down. Also, the read out should have grams is stock solution readout. No one measures 1.236 mL of acid. We're chemists: we weigh 2.28 g.

Essential for a grad student
maddiekate

I use this app almost every day. It's easily one of the most useful apps on my phone.

Include option to calculate final volume from given mass under molarity
Josh 11264

Include option to calculate final volume from given mass under molarity

Complaint
Hasan7092

Hi How r u? Could u please update this app so that iphone 6+ can support it with big display? It reduces my iphone's speed and also looks so terrible with small screen Thanks...