ISO 10349-12-1992 PDF
Name in English:
St ISO 10349-12-1992
Name in Russian:
Ст ISO 10349-12-1992
Original standard ISO 10349-12-1992 in PDF full version. Additional info + preview on request
Full title and description
Photography — Photographic-grade chemicals — Test methods — Part 12: Determination of density. Specifies a laboratory method for determining the density (mass per unit volume) of solutions used in photographic processing; measurement is carried out with a density meter after the test portion reaches thermal equilibrium at 25 °C.
Abstract
This part of ISO 10349 defines a procedure to measure the density of photographic processing solutions using a density meter capable of reading to 0,001 units, with the sample equilibrated in a water bath at 25 °C prior to measurement. The method is intended for quality control and specification verification of photographic-grade chemicals.
General information
- Status: Published (confirmed as current on last systematic review).
- Publication date: December 1992 (Edition 1, 1992-12).
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 37.040.30 (Photography — Photographic chemicals).
- Edition / version: Edition 1 (1992).
- Number of pages: 2.
Scope
Specifies a test method for determining the density of solutions used in photographic processing. The standard covers sample preparation (bringing the test portion to thermal equilibrium), the measurement procedure with a density meter (precision to 0,001 units), and the conditions under which the measurement is to be taken (water-bath at 25 °C). The procedure is intended for photographic-grade chemicals and laboratory quality control.
Key topics and requirements
- Required instrument: density meter with resolution to 0,001 units.
- Sample conditioning: bring the test portion to thermal equilibrium in a 25 °C water-bath before measurement.
- Measurement procedure and repeatability requirements for photographic processing solutions.
- Applicability: photographic-grade chemicals and processing solutions used in film and paper development workflows.
Typical use and users
Used by laboratory technicians, quality control personnel at manufacturers of photographic chemicals, photographic film and paper processors, test laboratories, and standards committees. Typical applications include incoming material checks, batch release testing, and routine QC of working processing solutions where density is a parameter of interest.
Related standards
Part of the ISO 10349 series (Photography — Photographic-grade chemicals — Test methods). Other parts in the series (examples) include general provisions and other test methods (e.g., Part 1 — General; Part 2 — Determination of matter insoluble in water; Part 8 — Determination of volatile matter; Part 10 — Determination of sulfide content). Many parts in the series were published in 1992 and some were later revised; readers should consult the ISO catalogue for the current status of each part.
Keywords
density, photographic chemicals, density meter, test method, photographic processing solutions, ISO 10349, quality control, 25 °C, laboratory procedure
FAQ
Q: What is this standard?
A: ISO 10349-12:1992 is an International Standard that specifies a laboratory test method to determine the density of photographic processing solutions.
Q: What does it cover?
A: It covers the sample conditioning and measurement procedure using a density meter (resolution 0,001 units) with samples brought to thermal equilibrium at 25 °C in a water bath before measurement.
Q: Who typically uses it?
A: Laboratory technicians, QC staff at photographic-chemical manufacturers, photographic processors, test laboratories and standards organizations use this method for specification checks and routine quality control.
Q: Is it current or superseded?
A: The 1992 edition (Edition 1) was published in December 1992 and, according to ISO’s records, the publication was last reviewed and confirmed (systematic review) in 2023, so this version remains current as confirmed by ISO.
Q: Is it part of a series?
A: Yes — it is Part 12 of the ISO 10349 series (Photography — Photographic-grade chemicals — Test methods). The series contains multiple parts describing different test methods and general requirements for photographic-grade chemicals.
Q: What are the key keywords?
A: Density, photographic chemicals, density meter, test method, photographic processing solutions, ISO 10349.