Robert Oster River of Fire: Ink Review

With its fiery, captivating color, Robert Oster River of Fire brings a whole new dimension to your writing experience. Whether you're a seasoned pen enthusiast or just starting your ink journey, you'll find something truly remarkable in the depths of River of Fire.

Robert Oster River of Fire on Rhodia paper


Robert Oster River of Fire on Leuchtturm1917  paper
Robert Oster River of Fire on Tomoe River Paper

Ink Review 

Supplies Used:

Smear Test (Dry Time):

  • 5-10 seconds – River of Fire dries relatively quickly, which is odd for such a saturated ink. It will take a bit longer with large nibs but overall the ink is perfect for the quick note-taker.

Drip Test (Water Resistance):

  • Low – No water resistance at all on this ink, so be careful in the rain or near your morning coffee. The diluted ink does make a nice light teal color as well.


  • High – Very little difference can be seen between swabs 1, 2, and 3 so there is a lot of saturation here. With the right paper that heavy dye load means a nice dark red sheen.

Ease of Cleaning:

  • Medium – We find most non-shimmering Robert Oster inks easy to clean. This one may be a bit tougher due to the heavy dye saturation but it's nowhere close to difficult.


  • Low – On most papers you don't see much shading at all but on the  Leuchtturm1917 paper there was a touch more


  • High – River of Fire isn't a fire hose but it's nice flow will keep any pen moving along nicely.

 Packaging and Aesthetics:

  • Robert Oster Signature Inks are handmade in Australia. The recyclable PET bottles are manufactured in Australia's first carbon neutral plastics plant.

If you're interested in similar colors, check out our Swab Shop where you can compare colors side by side.


Robert Oster's "River of Fire" is an enchanting ink that truly sets your writing ablaze with vibrant hues. Its rich color and smooth flow make it a delightful choice for fountain pen enthusiasts and artists alike. If you're searching for an ink that ignites your creativity, "River of Fire" is a scorching pick that won't disappoint.


This color is available in 50ml bottles as well as our sample size.