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Tintenlabor Dark Green 2 (Dunkelgrün / schwarz 2) Ink review # 185 🧾 Description Tintenlabor is a Swiss ink company that specializes in iron gall-based inks. These inks are unique in that the iron content is known to the user beforehand. You can find more about this ink here. There are three Green inks: Dark Green 1 (3 gr/l) Dark Green 2 (4 gr/l) and Aprilis Argente (6 gr/l). The new formulation of Dark Green 2, a low-dye, medium-iron-content ink that instantly oxidizes from bright green to dark grey or black, even on watercolour paper. The flow is wet, and the lubrication is below average but still pleasant. I will post a comparison review of the two formulas later on here. Other inks with high oxidation rate are Gold Black and Aprilis Argente. This ink can leave black iron residue on some pens and stain nibs. A diluted solution of white vinegar, water, and lots of soaking was necessary to clean. I removed the nib stain with a stain remover (Pink solution) and Q-tip from the nib. Do not use ammonia-based cleaning solutions to clean iron gall inks. 🧪 Chroma ✍️ Writing Samples Rhodia & Iroful Midori & TR68gsm Hammermill 20lb 📸 Photo Oxidation in real time on Iroful paper (artificial LED light). I wasn't fast enough. Oxidation in real time on TR 68 gsm. The bright green line is the colour going down. 🔍 Comparison Observe how the oxidation process changed the colour of the inks over time. Dark Green 2 (New Formula) oxidized overnight. After application After oxidation 💧 Water Test 🎨 Art Work Black Panther A fun drawing using the Dark Green 2/ Purple Black2 (new formula) on Fabriano watercolor paper. I ain't your taurus Part of the year-long Inktober challenge: Taurus Tintenlabor Dark Green 2 (old formula) Montblanc Origins Coral Funky Fungi Tintenlabor Dark Green2 /Violet Blue, Noodler's Red Rattler's Eel Pens Used: Pilot Kakuno EF, Lamy (EF / F / M / B / Stub 1.1), Vintage Unic wet noodle flex What I Liked: Oxidation, iron gall ink What I Did Not Like: Not easy to clean What Some Might Not Like: Cleaning, iron gall Writing Experience: Pros: Immediate oxidation. Waterproof, Cons: Cleaning could be difficult. You need to soak in white vinegar (not balsamic, obviously ) 🧷 Ink Characteristics Shading: Some shading, especially with M nib and above. Ghosting: Yes on Hammermill Bleed Through: Yes, with wet/ flex pens. Flow Rate: Wet Lubrication: Good Nib Dry-out: Did not notice. Start-up: With most pens ok. Saturation: Delicious and complex Shading Potential: With some pens yes. Sheen: Did not notice. Spread / Feathering / Woolly Line: Did not notice Nib Creep / “Crud”: Did not notice Staining (Pen): Yes. Black iron residue can stick on the converter. Clogging: Did not notice Cleaning: A pain. Lots of soaking in vinegar. Though surprisingly only water with Jinhao X159. Water Resistance: Excellent. 🛒 Availability Available in 30, 50 ml bottles 💬 Closing I enjoyed using this ink, despite its drawbacks. If you want this extreme oxidation, this is the one for you. If you want one with less hassle, TIntenlabor Gold Black could be another option. No fountain pens were hurt in preparing this review Please don’t hesitate to share your experience, writing samples, or any other comments. The more the merrier!