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An unusual liquid layer or texture in a compound bottle needs identification before use. Do not assume that shaking, dilution or extra mixing will restore a suitable product.
Updated · NANOLAB Knowledge
Identify the exact product, batch and storage history. Note whether the bottle is unopened or already in service and photograph the observed separation. Compare the condition with the supplied instructions rather than with an unrelated polish.
Follow any manufacturer direction for mixing or shaking. If the appearance remains unusual or the instructions are unclear, ask the supplier for guidance before customer work. Adding solvent or water changes the working material and does not establish that its original properties have been recovered.
A questionable bottle should not represent the product in a supplier comparison. Preserve the sample and its history for assessment. Use a verified product condition for an agreed trial and keep the retained material separately identified.
Record the supplier response and what happened to the bottle. If continued use is approved, evaluate the actual working method and inspect the result. If a replacement is supplied, keep the original observation connected to the replacement history.
Appearance alone does not establish a defect. Check the exact product guidance and supplier assessment; different formulations may have different handling requirements.