A layer is an observation, not a diagnosis
Sea buckthorn juice can contain an oil-bearing fraction and suspended material that change its appearance on standing. A cream layer alone does not establish a separator fault. Begin with the agreed product and the storage condition.
Compare samples on the same basis
Use the same sampling temperature, standing time and mixing condition. Record the feed and clarification objective so that a change in appearance can be connected to a particular stream. Compare freshly collected and stored samples without treating them as the same measurement.
Keep oil recovery as a distinct equipment question
Clarification, pulp-oil phase handling and independent seed-oil extraction are different duties. Ask which outlets and bowl configuration are established for the selected machine. Do not assume that a standard clarification setup provides a particular oil-recovery system.
Information for an equipment enquiry
Describe the material you start with, the ingredient you want and the part of the process you need to add. Include a known processing amount or package format if available. The linked equipment pages identify the machines relevant to this decision.