WECK 545 ml Quadro Jar RR100
The WECK 545 ml Quadro Jar RR100 combines a distinctive square shape with a practical, everyday design. Its tall, slightly tapered profile makes it ideal for preserving jams, storing sourdough starter or preparing layered dishes such as salads and desserts.
Crafted from high-quality glass, the jar offers both durability and clarity, allowing you to easily monitor contents during fermentation or storage. The wide round rim ensures easy filling, cleaning and access, making it a versatile addition to any kitchen setup.
Whether used for preserving, fermenting or serving, the WECK Quadro jar delivers both function and presentation.
545 ml capacity – ideal for preserving, storage and fermentation
Square shape with a tall, tapered design
High-quality glass for durability and visibility
Wide round rim for easy filling and cleaning
Suitable for sourdough starter, jams, salads and layered dishes
✔ Extra capacity for active starters
✔ Wide opening for easy feeding
✔ Clear glass to monitor fermentation
For a secure fit you will need:
• 1 × RR100 Glass Lid
• 1 × RR100 Rubber Sealing Ring
• 2 × Stainless Steel Clips
Specifications
Country
Germany
Material
Clear glass
Volume
545 ml
Full brim volume
545 ml
Diameter (outside)
100 mm
Height
113 mm
Weight
295g
Shape
Round neck/Square base
Manufacturer
Weck glass and packaging GmbH, Alter Heerweg 2, 53123 Bonn
Order by 4pm Monday to Friday and your order is dispatched the same day.
- Free UK delivery on orders over £50.
- Standard UK delivery: 1-2 working days.
- You will receive tracking by email as soon as your order is dispatched.
30-day returns. You have 30 days from receiving your item to request a return. Items must be unused, with tags, and in the original packaging.
- Approved refunds are issued to your original payment method within 10 business days.
- Starter cultures, perishable goods, custom items, gift cards and sale items cannot be returned.
- To start a return, email support@sourdoughsupply.co.uk. Returns sent without approval cannot be accepted.

Tools chosen by bakers, for bakers
At Sourdough Supply Co. we test every product in our own kitchens before it earns a place in the range. From proofing baskets to precision scoring tools, each piece is selected for durability, function and performance, because great bread starts with the right equipment.
Fast, careful UK shipping
Order by 4pm Monday to Friday and your order leaves our UK warehouse the same day. Standard delivery arrives in 1-2 working days, free on orders over £50. You will receive tracking by email the moment your order ships.


From our kitchen to yours
Sourdough Supply Co. is a small UK team of home bakers. Everything we stock is tested in our own kitchens, and if a tool does not earn its place, we do not sell it.
Questions about your bake? Email us and a real person will reply.







