Liquidraw Technical Pen Ink - 5 x 25 ml | Assorted Colours | Waterproof Ink | Compatible with Rotring Isograph Pens | Plastic Refill Bottle, Screw-On Lid | Ideal For Drawing, Illustration, Calligraphy

I used this to refill my Reform Refograph 0.35, a pen I have used for over 30 years. The ink runs smoothly and dries quickly, which is the most important fact. The bottle requires a little patience to open but I don't think this is because it is poor quality but because it is good quality. Here are my tips, which result in no spill or mess at all. Once you screw off the black cap and then lift off (not screw off) the clear plastic nozel cap you will find that the nozzle is solid down to the ink level. I found what works is to take a thin nail (which has a pointed end) - the bronze looking type you lightly tap in the wall to put up picture frames and just lightly tap it down into the nozzle. If you do this gently the nail will eventually pierce through to the ink effortlessly. Then you gently lift the nail out, wash the nail and put the clear nozel cap back on and screw back on the black cap. The nozel will now work perfectly and you will have a nice clean small hole into the bottle through the nozel, which will help avoid clogs. If you use a paper clip (which has a flat head), you will quickly find it difficult and then you will start applying too much pressure and then pop all the ink will spray out and you will be left with a mess and a screwed up nozzle. Hope this helps. Small bronze nail, gently tap tap in with hammer into the nozzle and then gently remove.

As advertised and reasonable price

I'm not a professional draughtsman so can't really vouch for the ink quality. It's black and writes OK on paper is all I can say. Only issue I had was with the bottle. Really wish I'd kept my last Rotring one and transferred the ink. The nozzle was solid so had to poke a hole down it. Always seem to end up covered in ink when refilling now - not quite sure how it happens but fortunately it seems to wash off very easily. Having said that it seems relatively waterproof once dried (in paper anyway). Works fine in my 0.25 Isograph and hasn't blocked at all so far.

These inks work great in Isograph pens for writing and have served me well for my note taking, My order arrived before the expected date and was well packaged.The ink itself (I ordered red and green) is great it has a deep pigment with no noticable fading it and drys quickly which is perfect for drawing or writing alike.The only issue I had is the pen my clog or not write as well with this ink if it has been left for a few days without writing. (however this may be an issue with the pen itself and not the ink but it is easily resolved by scribbling on some scrap paper until the flow is normal)

Really good waterproof ink for drawing pens. Designed to fill refillable cartridges especially in Rotring pens.

I have no idea yet about the ink itself, but the rigmarole for opening the bottle is ridiculous.Other reviewers have sensibly suggested pushing a suitably thin nail down the nozzle. That was fine, except that the nail then needed to be removed - and, surprise, surprise - the nozzle actually turns out to be detachable (something I had attempted unsuccessfully to make happen at an earlier stage).I am quite sure it cannot really be necessary to insert a nail in order to remove the nozzle unit, but that seems to be the route to success. Quite barmy (imho).UPDATE: I have since received a bottle of ink of a different colour. This time, the box also contained a needle with a grippable head. Problem solved (when one is fortunate enough to receive the pin!)

Perfect for my needs.

Very good ink

I didn’t like the quality. If I compare it with rotring ink, it looks different on paper and on the bottle. It has a different viscosity.

Très belle couleur. Similaire à l'encre rotring

Bon produit

Belle couleur, bon pouvoir couvrant, compatible avec les rotrings isograph, meme très fins.Cepandant elle sèche beaucoup plus rapidement que la marque rotring. (Mais oui ils ne font pas de orange :/)

preiswert und Tinte in Ordnung