How To Remove Residual Ink From Plastic Bottles?

[iamharshkumar97]

I have some finished Diamine and Blackstone ink bottles. I want to reuse them as they are great for traveling as they don't leak.

 

How can I remove the residual ink? I tried to wash the bottle under running water but it made the whole bottle blue(ink colour)

[A Smug Dill]

One or more of:

 

* Soak with (commercial or home-made) pen flush/cleaning solution, then rinse.

* Put the submerged bottle in a ultrasonic cleaning tank.

* Scrub the inner walls with a bottle cleaning brush, q-tip, etc.

[Runnin_Ute]

I have had success with some of the above and then running through the dishwasher. I have done this with Lamy, Pelikan, Waterman, Diamine, KWZI,a Sheaffer Skrip with the Inkwell, Levenger bottles

[sansenri]

A lot depends on how hard your water is.

Washing up liquid usually does the trick, especially with glass bottles, but plastic is more tricky because if carbonate has settled on the inner walls it will be stained by ink and will not wash away unless you scrub it.

Typically vinegar will get rid of it (if the bottle is small you can fill it with vinegar, leave overnight, then wash thoroughly next day.

I also use sodium bicarbonate to wash my plastic bottles, and scrub them with an old toothbrush...

[sandy101]

Washing up liquid and an old tooth brush for stubborn stains.

Edited July 8, 2020 by sandy101

[inkstainedruth]

Another possibility might be to use B-Brite (which is a strong oxidizer used for sterilizing stuff like brewing equipment).

Ruth Morrisson aka inkstainedruth

[Ron Z]

Let them soak in warm water over an extended period of time, maybe with some Dawn or Dawn Platinum in the water. It'll come loose. Blast it with the sprayer to knock the remains out.

[Paul-in-SF]

This may be the same kind of stuff as B-Brite, but Oxyclean in hot water should take care of it. Just be sure to wash them out again with soap and water, and rinse thoroughly.

[Honeybadgers]

A touch of dilute ammonia in the water.

 

Or a cheap $30 ultrasonic cleaner will do the job too.