Editorial Policy
How SG Containers Review picks topics, cites sources, states equipment conditions, handles bylines and change notes, and corrects errors in its guides.
This policy describes how SG Containers Review, a publication operated by DeltaSpark, researches and publishes its guides on glass packaging and bottling-line equipment. See also About and Disclosures.
How we choose topics
Topics start with questions that buyers and plant teams ask: how to match a bottle or jar to a closure, what to check before a supplier enquiry, or how one line stage affects the next. Each guide is written around a specific reader question, not around keywords alone. We also test a topic against the available sources. If we cannot find identifiable documents that support an answer, we narrow the question or do not publish the guide.
How a guide is researched and checked
The research sequence runs from the reader’s decision to sources, claim labeling and publication checks, then continues with corrections.
Older material, including historical reporting, can suggest a question worth answering, but we research the answer again from current sources instead of rewriting old pages.
Jump to corrections · Check date and change-note rules
Sources and attribution
We draw on identifiable sources: manufacturer documentation, industry-body publications, applicable standards and clearly attributed reporting. Each guide lists its main sources in an “Evidence and limitations” section at the end, with links where available. That section also states what the sources do not establish, so you can see where a guide stops.
The table sets out how we treat each type of source and how it is labeled in the text.
| Type of source | How we use it | How it is labeled |
|---|---|---|
| Standard or industry-body publication | As the reference for definitions, dimensions, test methods and requirements, within the scope the document states | Named and attributed, with the scope and edition where relevant |
| Manufacturer technical documentation | For published specifications of a named model or product, under the conditions the document gives | Attributed to the manufacturer as a published specification |
| Manufacturer or supplier marketing statements | Only to report what a company says about its own products | Labeled as a supplier claim |
| Reporting by other organizations | To describe projects or events, with the facts attributed to the reporter | Attributed to the reporting organization, never presented as our own project |
| Our own comparison or reasoning | To connect sources, compare options and explain trade-offs | Labeled as editorial analysis |
Supplier claims carry attribution in the sentence itself, such as “the manufacturer states that.” Repetition by other suppliers does not verify a claim. Promotional material alone is not a basis for ranking suppliers, and naming a source is not an endorsement. Relationships that could affect coverage belong in Disclosures.
How numbers are handled
A number appears in a guide only with its source and the conditions it applies to. For equipment, that means the model, configuration, product, container format or operating condition named in the source. A filling speed, for example, means something only for a stated container, product and line arrangement, so we quote it with those details or leave it out.
Where no source supports a figure, we omit it. General values for speed, accuracy, breakage rate, maintenance interval or payback period are omitted unless supported by a cited source. If a range is quoted, we say whose range it is and what it covers. We keep figures produced under different conditions by different sources separate, and we preserve the precision that the source gives.
When sources disagree
Sources sometimes disagree, for example when two standards define a dimension differently or a manufacturer’s document differs from a trade publication. We report the disagreement instead of choosing silently. The guide states each position with its source, gives the likely reason where the sources allow it (a different edition, scope or measuring method), and says what you should confirm with the supplier or the relevant standard. If the difference matters to a decision, it is also listed in the “Evidence and limitations” section.
No claims of testing without records
A guide or comparison is not evidence of hands-on testing. We do not claim factory trials, equipment performance verification or project delivery unless documented records exist, and we say so when they do. Projects reported by other organizations are attributed to them.
Bylines
Article headers show the real substantive update as Updated <Month Year>, without a team byline. An individual author or reviewer is named only when their participation, review scope and consent are recorded. The About page explains the publication’s editorial identity.
Dates and change notes
A substantive revision updates the stored editorial date and the visible month and year. A layout-only change does not establish a new content review. If publication or modification dates appear in structured data, they must agree with the page’s actual dates; missing metadata is not a reason to invent a date.
Substantive corrections retain a dated note at the end identifying what changed and why. Event dates and standard editions remain beside the relevant facts. Typographical fixes that do not affect meaning do not reset the substantive update date.
Corrections
If you believe a statement is wrong or poorly sourced, use the Contact page and identify the article and the statement. We review the source, correct confirmed errors and note substantive corrections on the page. If we decide no change is needed, we will say why when you ask.
Illustrations and diagrams
Cover illustrations and schematic diagrams are created for explanation. A diagram shows the order of steps or the relationship between parts and is not drawn to scale. Technical figures that appear in a guide come from the cited sources and are attributed to them.
Where to read next
The guides this policy covers begin with Glass Containers and continue through Manufacturing, Bottling Lines and Buying Guides. How the site handles reader information is described on the Privacy page.
Change note — October 8, 2026: Aligned byline and update rules with substantive reviews, combined duplicate evidence rules and made the research sequence readable without the old horizontal diagram.