THE DECISION IN BRIEF
We weighed oil delivered by a sprayer; can we label the result as millilitres per stroke?
Report the measured mass and method first. Convert to volume only with relevant density information and a justified calculation, clearly distinguished from nominal supplier output.
Preserve the quantity actually measured
Record the weighing method, formula identity and condition, sample configuration and actuation sequence. Separate initial priming from the delivery being evaluated. If product missed the collection vessel or remained as visible residue, note that rather than silently treating the collected mass as all material dispensed.
Do not replace the measured unit with a more familiar sales unit. A mass result and a volume specification answer related but distinct questions. Keep the original observations available for technical review.
Explain any proposed conversion
Ask the formulation owner for density information relevant to the liquid and condition used. If a conversion is appropriate, preserve its inputs and method. Illustrative arithmetic must remain labelled as an example, not a measured property of the buyer's product.
If density information is unavailable or does not match the formula, keep the result as mass. Compare candidates using a consistent method and state its scope. A tidy converted number does not improve evidence when the underlying input is unsupported.
- Identify the measured quantity and unit.
- Record formula condition and configuration.
- Separate priming and collection observations.
- Preserve conversion inputs when volume is calculated.
Connect the result to the application decision
Aptar publishes dosage options for defined configurations. Keep the supplier's nominal information distinct from the buyer's measured mass and any calculated volume. Ask about the relevant configuration and method before treating two differently described results as a technical discrepancy.
Use the comparison to understand useful application and consistency under the agreed method. If the supplier quotes another output, ask about its configuration and measurement context before declaring a discrepancy. The final purchasing description should distinguish supplier nominal information, buyer observations and any calculated result. That separation makes later troubleshooting possible without overstating precision.
Preserve collection deviations
If material lands outside the collection area or remains on the assembly, record that event with the sample rather than silently repeating until a favourable result appears. Decide with the technical owner whether the observation remains usable. A repeat should have its own identity and reason in the measurement record.
Sources & further reading
Use the references below alongside the selected component drawing and agreed sample plan. Product-specific claims need product-specific evidence.
PRODUCT REFERENCES
Components to discuss with your supplier.
These references share the component type discussed here. Confirm the selected assembly and application with samples.
Related articles
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