A wholesale buyer's guide to concentrated matte black liquid ink: what to verify on concentration, matte finish and batch tone before ordering.
Wholesale buyers who stock black calligraphy ink face one recurring risk: the shipment arriving in month six looks different from the sample approved in month one. Concentrated matte black liquid ink removes the problem at the specification level β concentration, matte finish and batch-to-batch tone are all written into the product standard at Gumo Craftworks Co., Ltd. The notes below set out what overseas B2B buyers should verify before placing a bulk order.
What Concentrated Matte Black Liquid Ink Is
Concentrated matte black liquid ink (SKU GMO-LIQ-003) is made from concentrated refined soot and formulated for a deep matte black tone rather than a glossy finish. The ink ships in 250ml and 500ml bottles, and the two volumes can be mixed within one order toward the 100-bottle minimum. Professional artists use the format for large-format brush work, while studios and distributors build labelled retail lines on the same base ink.

Concentration and Dilution
Concentration decides working behaviour. A concentrated soot formula carries more pigment per millilitre, so studios can dilute to the working density each script requires without losing black depth. Gumo Craftworks runs density testing on every production batch, and density testing forms part of batch QC before release. On samples, compare diluted and undiluted strokes on the same paper stock used in the end market before approving the specification.
How to Check the Matte Finish
Matte describes how dried ink reflects light: a matte black line stays flat under display lighting, while a glossy line shows sheen, and the sheen changes the perceived tone. Verify the finish by drawing test strokes, allowing full drying, then viewing under the lighting conditions end customers will use. A tone-matched sample batch can be produced within 15 days of receiving a buyer reference sample, so the approved finish becomes the production target.
Tone Matching and Certificates
Tone consistency is controlled in production rather than promised in marketing. Each batch of concentrated matte black liquid ink is compared against a master reference standard in the tone-matching lab before release, alongside density testing and AQL sampling inspection. A tone consistency certificate ships with every order, so the receiving team can check the delivered batch against a documented reference instead of memory.
Order Planning for Bulk Buyers
Order planning is straightforward: choose 250ml, 500ml or a mix, count both volumes toward the 100-bottle minimum, and allow 30β40 days of production after sample approval. Trade terms are quoted per order on FOB, CIF or DDP terms. Custom labels and gift box packaging are available for distributors building retail-ready branded lines, and packaging requirements should be confirmed at quotation stage.

Building a Liquid Ink Range
A black ink SKU usually sits beside wider liquid ink products. Volume-driven school and studio programmes suit bulk calligraphy liquid ink in larger pack formats, while gift and art-supply channels can extend the range with a colored liquid ink set. Full specifications and order options for concentrated matte black liquid ink are listed on the product page.
Quick Answers for First-Time Buyers
What is the minimum order? 100 bottles, counted across 250ml and 500ml volumes combined in one shipment.
How fast can a tone-matched sample arrive? Within 15 days of receiving the buyer reference sample; production then takes 30β40 days after approval.
Which documents accompany a shipment? A tone consistency certificate ships with every order of concentrated matte black liquid ink, so incoming QC can compare against a documented reference.
Ready to plan an order? Send the bottle format, quantity, tone target and packaging requirements, and the Gumo Craftworks team will respond with a quotation and a sample arrangement matched to the programme.
