Jump to content

Test strips...


Externet

Recommended Posts

Hi.  I know peanuts about this; that is why am here.

Is there test strips that show if it is ethanol, or methanol, or some other compounds when distilling alcohols ?

What sorts of identifications/concentrations are test strips made for ?  pH and nothing else ?  What about salinity ?  Glucose ? ...?

Link to comment
Share on other sites

10 minutes ago, Externet said:

Hi.  I know peanuts about this; that is why am here.

Is there test strips that show if it is ethanol, or methanol, or some other compounds when distilling alcohols ?

What sorts of identifications/concentrations are test strips made for ?  pH and nothing else ?  What about salinity ?  Glucose ? ...?

There are lots, for instance as shown here:https://www.sigmaaldrich.com/GB/en/products/analytical-chemistry/photometry-and-rapid-chemical-testing/test-strips-papers-and-readers

I don’t know of one for discriminating between alcohols, but there is one for glucose, which uses a meter to detect the amount of gluconic acid generated by reaction with blood glucose.

Link to comment
Share on other sites

No for alcohol. But alcohol can be determined by testtube with chromium sulfuric acid. Used in tubes used by police to determine alcohol in breathing air from drunken drivers. Methanol and ethanol can divided by boric acid. First one gives boric methyl ester what burns in green flame. The Ethyl ester is only made up by adding sulfuric acid.

Other test Strips are used for pH, Sulfide (lead acetate paper), oxidisers (potassium iodide starchpaper). Glucose in urine for diabetic,

Edited by chenbeier
Link to comment
Share on other sites

1 hour ago, Externet said:

Is there test strips that show if it is ethanol, or methanol, or some other compounds when distilling alcohols ?

Methanol has a different boiling point (~ 64.7 °C) than ethanol (~ 78.23 °C), so when you distill a mixture of the two, methanol goes first.

When I distilled ~ 500 mL of mash, the first 5-10 mL of product was collected and treated as "trash" (burned later as fuel, so don't throw it away, it can still be used).

You should have equipment with a thermometer:

Distillation.thumb.png.e3d3ca42efd4f971a0dd97256057c682.png

Edited by Sensei
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.