Start with one photographed gradient reference
This directory uses the exact published name, configuration and photograph as its evidence boundary. Keep the chosen SKU with the quotation brief so the direction remains traceable.
Commercial bottle collection
Compare five exact OULU complete-bottle references whose published name and configuration both identify a gradient bottle-body direction. The directory covers 15ml, 25ml, 50ml and 100ml and compares the photographed transition from black or blue toward clear. It does not establish one shared production process, color standard, component specification or commercial term across the collection.

Buyer decisions
This directory uses the exact published name, configuration and photograph as its evidence boundary. Keep the chosen SKU with the quotation brief so the direction remains traceable.
PB0189 and PB0537 show black-to-clear directions, while PB0261, PB0521 and PB1041 show blue gradient directions. A screen image is a starting reference, not an approved production color standard.
All five references happen to use cylindrical-body descriptions, but this page compares the photographed gradient direction. Use the cylindrical collection when the buyer's primary decision is bottle shape and proportion.
The published references do not prove one common coating, glass-coloring or decoration method. Define the target transition, color reference, logo contrast and applicable sample approval path for the exact SKU.
Width, body height and overall height are shown for these references, while depth is not shown. Do not infer a missing depth or one standardized footprint before component and fitted-box review.
This directory does not imply live stock, one MOQ, price, schedule, certification, durability, UV protection or compatibility result. Confirm the selected SKU, quantity, destination and complete packaging scope during quotation.
Product starting points

OULU-PB0189 · 15ml

OULU-PB0261 · 25ml

OULU-PB0521 · 50ml

OULU-PB0537 · 50ml

OULU-PB1041 · 100ml
Continue color planning
Complete the packaging system
Frequently asked questions
Both the published product name and configuration identify a gradient direction on the bottle body. The exact SKU and photograph are the evidence boundary.
The published references do not establish a shared production method. Confirm the applicable color process and approval route for the selected SKU.
No. A screen image is a visual starting point. Confirm the target transition and applicable physical sample or color reference for the project.
They are described as cylindrical references but span four capacities and different proportions. Depth is not shown, so request any missing measurement before fitted packaging approval.
Not by default. Component fit and artwork placement must be reviewed for the exact SKU and intended finished assembly.
No universal commercial term is implied. Availability and applicable terms are confirmed for the exact SKU, quantity, destination and packaging scope during quotation.
Start with your requirements
Send the exact reference, quantity, destination, target gradient direction, components, artwork, box needs and target timing for a project-specific review.