ISO 10349-2-1992 PDF

Full title and description

ISO 10349-2:1992 — Photography — Photographic-grade chemicals — Test methods — Part 2: Determination of matter insoluble in water. This part specifies a laboratory test method to determine the fraction of a photographic-grade chemical that is insoluble in water, expressed as a residue after filtration, drying and reweighing.

Abstract

The method is based on transferring a representative test portion into a conical flask containing water, heating (steam bath), filtering through a dry porous crucible, washing with hot water, drying the crucible plus residue and reweighing to calculate the amount of matter insoluble in water. The procedure is intended for routine quality control and specification testing of photographic-grade chemicals.

General information

• Status: Published (International Standard, confirmed).
• Publication date: December 1992 (1992-12; listed as 29–30 December 1992 in catalogues).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 37.040.30 — Photographic chemicals (ISO/TC 42).
• Edition / version: Edition 1 (1992).
• Number of pages: 2.

Details above are recorded in ISO bibliographic entries for ISO 10349-2:1992.

Scope

Specifies a test method for determining the amount of matter insoluble in water present in photographic-grade chemical products. The procedure defines sample handling, the filtration medium (porous crucible), heating and washing steps, drying conditions and the calculation/reporting of the insoluble residue. It is intended for use in quality control, specification compliance and inter-laboratory comparisons for photographic chemicals.

Key topics and requirements

• Representative sampling and preparation of the test portion.
• Transfer to a conical flask with water and heating on a steam bath.
• Filtration through a dry porous crucible and thorough washing with hot water.
• Drying the crucible plus residue to constant mass and accurate reweighing.
• Calculations to express insoluble matter as mass or percentage of the test portion and reporting requirements.

These topics reflect the procedural steps and reporting requirements defined in the standard.

Typical use and users

Used by quality control laboratories, chemical manufacturers and suppliers of photographic-grade chemicals, third-party testing laboratories, standards bodies and R&D teams working on photographic processing solutions. Typical applications include batch release testing, supplier qualification, incoming inspection and comparative testing between formulations.

Related standards

ISO 10349-2:1992 is one part of the ISO 10349 series (Photography — Photographic-grade chemicals — Test methods). Other parts in the series specify additional test methods (for example, determination of matter insoluble in ammonium hydroxide, residue after ignition, heavy metals, halide content, alkalinity/acidity, volatile matter, etc.). Part 1 covers general requirements and was later revised (ISO 10349-1:2002). For full series listing and status of related parts consult ISO/TC 42 cataloguing of ICS 37.040.30.

Keywords

photography; photographic-grade chemicals; test methods; water-insoluble matter; residue; filtration; porous crucible; quality control; ISO 10349; ISO/TC 42.

FAQ

Q: What is this standard?

A: ISO 10349-2:1992 specifies a laboratory test method for determining the amount of matter insoluble in water in photographic-grade chemicals (residue after filtration, drying and reweighing).

Q: What does it cover?

A: It covers the sampling and test procedure — transfer of the test portion into water, heating, filtration through a dry porous crucible, washing, drying and reweighing — and the calculation/reporting of the insoluble residue.

Q: Who typically uses it?

A: Quality-control and analytical laboratories, chemical manufacturers and suppliers of photographic-grade reagents, standards organizations and laboratories performing conformance testing or material specification checks.

Q: Is it current or superseded?

A: ISO bibliographic records list ISO 10349-2:1992 as published and confirmed (stage 90.93) in ISO’s lifecycle entries; it remains a published part of the ISO 10349 series. Users should verify the current status with the national standards body or ISO catalogue when relying on the document for regulatory or contractual work.

Q: Is it part of a series?

A: Yes — ISO 10349 is a multipart series of test methods for photographic-grade chemicals (ISO/TC 42). Part 1 (general) and multiple other parts address complementary test procedures; some parts have later revisions (for example, ISO 10349-1 was revised in 2002).

Q: What are the key keywords?

A: Photographic-grade chemicals; test methods; insoluble matter; residue; filtration; quality control; ISO 10349; ISO/TC 42.