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In chemistry, a pen is not used to draw lines on chromatography paper. A pencil is used to draw lines on the paper because the ink can smear and interfere with the chromatography and the ink will dissolve in the chromatography solvent.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agobecause it is neater and if you make a mistake you can rub it out.
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What element is used to make the nib of a fountain pen?
The element used in most ball point pens is osmium, which is a rare naturally occurring element. It is usually alloyed with platinum.
Why should you not use a ball point pen to mark a TLC plate?
because the dye in ball pen ink will rise with the solvent system.
What happens if you drink pen ink?
Pen ink is poisonous but not lethal. It's okay if you accidentally draw on your tongue, but it is not advisable to drink it in replacement to water.
What are two things that contain osmium?
Two uses for Osmium: >> With Iridium, an alloy used in making precision ball bearings & ball point pen points. >> As a catalyst in the synthesis of Ammonia (NH3) and in the hydrogenation or organic compounds.
How do you remove ball point pen stain from a baller?
Try rubbing it with alcohol or shaving cream.
Why was a ball pen not used to draw the line on which to place the spots of food colors?
because if the ball pen used in the paper chromatography its possible that the ink of the ball pen was mixed in the food colors.
Why should you use a pencil to draw the line instead of a ball-pen?
if you mess up you can erase it
Why is a pencil used to mark the origin line and not a ball point pen?
because it can be rubbed out you nogging
How long of a line can the average ballpoint pen draw?
35 miles....
What is the difference between a ball point pen and a roller pen?
Ball & Roller Bearings both belongs to the category of radial contact bearings.In case of ball bearings spherical balls are used however in case of roller bearings cylindrical rollers are used.due to balls used in ball bearings there is a point contact is made whether it is line contact in roller.
How do you draw a Line using MFC and to do animation of this line?
take a pen and use dc->LineTo(point).
How do you draw a hose?
get a pen or pencil, then put it on whatever your gonna draw the hose on, then do a line, then do another line parrel to it, then do a line at each end of those lines, so they are conecting, there is your hose |=========|
What results will it be if using a pen to draw the start line of paper chromatography?
You will get a chromatograph of the dyes in the pen's ink, instead of a reference mark.
How do you draw a x with a square around it without lifting pen and retracing line?
you don't
How does a roller ball pen work?
roller ball pens employ a mobile ball and liquid ink to produce a smoother line.
Output device used to draw building plans?
Mouse or light pen
How do you draw a pen?
You can draw a pen many different ways, be creative.
