Hi! What is the capacity of the standard long Waterman cartridges in ml?

The long cartridges are 72 mm in length with about 1.45 ml capacity.

This fits all Waterman pens, so what's the difference from standard so110850 Waterman cartridges, much cheaper?

This did NOT fit my Waterman pen. It was too long. So I'm afraid I can't answer your question properly. Sorry.

Would the cartridges fit in this fountain pen https://www.amazon.com/fountain-ideapool-calligraphy-signature-executive/dp/b01m1fuxun/ref=pd_sim_229_5?

I'm not sure but I don't think so. They look different

Does these fit pilot pens

Most likely not. I believe they are brand specific. These are very large tubes that fit the waterman nicely. there are smaller tubes S0194751 by Rotring that I have purchased on Amazon. They come at a very low cost with many units and work great for smaller reservoir pens. The pack is 6 per box and you can buy multiple boxes at one time to save more money. If you use your fountain pen a lot that would be my recommendation.

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Waterman Fountain Pen Ink Cartridges, Long, Intense Black, 8 Count, Blister Pack

Product ID: 2641284

Details

Brand
Waterman
Item Weight
0.22 g
Item dimensions L x W x H
3.03 x 2.36 x
Number of Pieces
8
Style
long ink

🖤Intense, deep black ink

🖋️8 long-lasting ink cartridges

🇫🇷Crafted in France with heritage

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Description

🖋️ Write your legacy with Waterman’s iconic black ink

UNIVERSAL FIT - Compatible with all Waterman fountain pens for seamless refills
TIMELESS IMPACT - Intense black ink that makes every word stand out
EFFORTLESS ELEGANCE - Smooth-flowing ink for a flawless writing experience
GENERATIONS OF TRUST - The choice of discerning professionals since 1883
HERITAGE CRAFTSMANSHIP - Proudly made in France, honoring 140+ years of innovation

Waterman Fountain Pen Ink Cartridges deliver 8 long-lasting, intense black refills engineered for smooth, consistent flow. Crafted in France, these genuine cartridges fit all Waterman fountain pens, combining over 140 years of heritage with modern reliability to elevate your writing experience.

Specifications

ASIN	B000J3X9XS
Best Sellers Rank	#23,578 in Office Products ( See Top 100 in Office Products ) #145 in Ink Pen Refills
Brand Name	Waterman
Customer Reviews	4.6 4.6 out of 5 stars (4,411)
Ink Color	Black
Item Dimensions	3.03 x 2.36 x 0.47 inches
Item Weight	0.22 g
Manufacturer	TOMY Intl.
Manufacturer Part Number	S0712991
Model Number	S0712991
Number of Pieces	8
Package Size Name	8 Count
Point Type	Medium
Style	long ink cartridges
UPC	844998178613
Unit Count	1 Count
Warranty Description	Contact Manufacturer

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19107CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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