SKU: 83437253974

Robert Oster School Blue 50ml Ink Bottle

Sale price$16.20 Regular price$18.00
Save 10%

Pay in installments of $4.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Robert Oster School Blue 50ml Ink BottleRobert Oster School Blue 50ml Ink Bottle delivers a clean, reliable everyday blue with the easy legibility writers want for notes, journals, and correspondence. The tone lands in a balanced medium range, bright enough to stand out on the page while remaining refined for professional use. Color & Performance This dye based, water soluble fountain pen ink offers gentle shading on fountain pen friendly papers, adding character without sacrificing

Robert Oster School Blue 50ml Ink Bottle delivers a clean, reliable everyday blue with the easy legibility writers want for notes, journals, and correspondence. The tone lands in a balanced medium range, bright enough to stand out on the page while remaining refined for professional use.

Color & Performance

This dye-based, water-soluble fountain pen ink offers gentle shading on fountain-pen-friendly papers, adding character without sacrificing clarity. Flow is smooth and well-behaved across a wide range of nibs, with dry times that vary by paper and nib width. As a water-soluble formula, it is not waterproof, making cleanup and pen maintenance straightforward.

Bottle & Practical Details

The 50ml bottle is compact and travel-friendly, with a secure screw cap for everyday use at the desk or on the go. The recyclable PET construction reflects Robert Oster's practical, environmentally mindful approach. School Blue loads cleanly in converters and piston fillers and pairs well with daily writing, study sessions, and casual sketching.

Technical Specifications

  • Brand: Robert Oster
  • Color: School Blue (medium blue)
  • Ink type: Dye-based, water-soluble fountain pen ink
  • Volume: 50ml
  • Bottle material: Recyclable PET
  • Water resistance: Low
  • Origin: Australia
  • Recommended use: General writing on fountain-pen-friendly paper
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83437253974

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 21 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Stephen Szczygiel
Fort Morgan, US
★★★★★ 5
Hold vest
Color: Red, Size: 3X-Large
Great look & fit !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
T
Verified Purchase
Trey
New York, US
★★★★★ 5
Great vest
Color: Dark Grey, Size: X-Large
This lil vest is awesome. A little thicker than I expected but perfect for my cool office. Looks like it cost twice as much. I had my company info put on it and looks like it cost 150.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
D
Verified Purchase
D.L. OHollaren, Jr.
Port Orchard, US
★★★★★ 3
fit
Snug fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2025
S
Verified Purchase
Shopper scott
Alexandria, US
★★★★★ 5
Ordering one of each color
Color: Dark Grey, Size: X-Large
Good quality for price. Probably the best item i have ever bottom off Amazon and this int a lie. I love this 1/4 zip vest. Works perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 1
To heavy
Color: Black, Size: X-Large
Vest is heavy and frankly very warm can’t see in what environment I’d wear it because at 40-50 I would use light down coat with sleeves I returned from t same day I reviewed it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 8, 2026

recommand products