Separate the three fit questions
Ask whether the outlet clears the bottle opening, whether the setup can be supported, and whether the powder has a usable release path. A match on one question does not answer the others.
Seller-supplied size graphic. The 1.5 cm arrow spans the lower cap/outlet area and does not define a clear internal bore.
Record the relevant measurements
The external dimensions where the funnel meets the bottle determine placement clearance. The internal bore describes the powder passage. Those are different measurements. Ask the seller to identify which surface a dimension describes; do not assume the 1.5 cm label establishes either one.
| Check | Record for your actual setup |
|---|---|
| Bottle opening | Clear opening at the contact point, rather than body width |
| Funnel outlet | Relevant external dimensions and the surface measured |
| Powder passage | Clear outlet bore, if confirmed |
| Cap access | Whether the lower cap can be handled while supporting the setup |
| Support | How the bottle and funnel will be held steady |
Use consistent units. NIST’s measurement reference explains units, not this product’s dimensions. Packaging measurements and the seller’s bottle illustrations do not replace the missing contact measurements or a tested model list.
Try positioning while both items are empty
Put the clean, empty bottle on a stable surface and check the clean, empty funnel against it. Inspect placement with the lower cap removed, then check whether the intended cap-handling sequence is workable. Stop if the connection needs force or the funnel cannot be supported.
Observe powder flow separately
Only after checking placement should you follow the product’s loading and pouring instructions. Clearance alone cannot predict flow for every powder. No flow rate, spill reduction or hands-free fit is established by this worksheet.
An observation applies to that bottle and funnel setup. Return to the powder funnel fit overview when comparing another bottle.