Source
Ниобия пентаоксид для оптики и электроники — Niobium pentoxide for optics and electronics, grade specification
ОАО «Соликамский магниевый завод» (OAO Solikamsk Magnesium Works) (n.d.). Ниобия пентаоксид для оптики и электроники — Niobium pentoxide for optics and electronics, grade specification. https://smw.ru/upload/iblock/c37/c37b32aaccec97dad80fc0d4c63cf0a8.pdf Retrieved 2026-09-10.
- Authority tier
- Peer-reviewed
- Type
- standard
- Licence
- No licence is stated on the document or on the product page that links it. Rights are therefore UNESTABLISHED, not permissive: a document being reachable without a login does not grant redistribution. The bytes are NOT retained in this repository; the document is referenced by URL and SHA-256 digest.
- Retrieved by Lithoen
- 2026-09-10
- Last re-checked
- 2026-09-10 (verified)
Known metadata gaps
Recorded explicitly rather than guessed.
- NO DATE IS PRINTED ON THE DOCUMENT. The PDF file carries an internal creation timestamp of 2013-04-15, and that is a property of the FILE, not a statement by the issuer. It is recorded here and is NOT promoted to an effective date, a version or a revision. The corpus already refuses to read a date of last revision as an effective date; a file timestamp is weaker than that, not stronger.
- NO PUBLICATION YEAR IS PRINTED. The document carries no date, no version and no document number, so publishedYear is null rather than inferred. The PDF's internal file timestamp is recorded in the gap above and is deliberately not promoted to a publication year.
- NO VERSION OR DOCUMENT NUMBER IS PRINTED. The grades are identified only by their grade names.
- The document states: 'По согласованию с потребителем, перечень и содержание анализируемых примесей может быть изменено' — by agreement with the customer, the list and the content of the analysed impurities may be changed. The published table is therefore the issuer's standing offer and not an invariant. Recorded, not resolved.