ISO 10349-13-2002 PDF

Full title and description

Photography — Photographic-grade chemicals — Test methods — Part 13: Determination of pH. This International Standard specifies a general laboratory method for measuring the pH of solutions of photographic‑grade chemicals with an accuracy of approximately ±0.1 pH unit; it is aimed at quality control of raw photographic chemicals rather than monitoring formulated photographic processing baths.

Abstract

ISO 10349-13:2002 defines procedures and requirements for determining the pH of solutions prepared from photographic‑grade chemicals. The method covers selection and calibration of pH electrodes and buffers, test-sample handling and temperature considerations sufficient to achieve the specified uncertainty (≈±0.1 pH unit). It explicitly states that the method is not intended for routine monitoring of finished photographic processing baths (e.g., developers).

General information

• Status: Published (confirmed by ISO systematic review; remains current).
• Publication date: 14 November 2002 (Edition 1, 2002).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 37.040.30 (Photographic chemicals / test methods).
• Edition / version: Edition 1 (2002).
• Number of pages: 5 pages in the ISO publication (national adoptions or catalog listings sometimes show expanded front/back matter yielding different page counts).

Scope

This part of ISO 10349 specifies a general laboratory method for the determination of pH of solutions prepared from photographic‑grade chemicals. The scope covers method intent (quality assessment of reagents), required instrumentation accuracy, calibration practice, sample preparation and temperature control to achieve the targeted uncertainty of roughly ±0.1 pH unit. The method is not intended for monitoring the pH of formulated processing baths used directly in photographic processing.

Key topics and requirements

• Objective: measure pH of photographic‑grade chemical solutions for quality control.
• Accuracy target: approximately ±0.1 pH unit (method‑dependent).
• Instrumentation: selection and calibration of pH electrodes suitable for the expected pH range, use of appropriate standard buffers.
• Sample handling: preparation of test solutions from reagent samples, temperature equilibration prior to measurement.
• Reporting: record calibration history, electrode type, buffer values, temperature and measured pH value with stated uncertainty.
• Limitations: not for routine monitoring of formulated processing baths or finished photographic developer solutions.

Typical use and users

Laboratories performing quality control on photographic chemical raw materials, manufacturers of photographic‑grade reagents, standards organisations, and conservation or imaging science laboratories that require traceable pH measurement procedures for photographic chemicals.

Related standards

ISO 10349 is a multipart series covering test methods for photographic‑grade chemicals; related parts include ISO 10349-1 (General), ISO 10349-2, ISO 10349-8, ISO 10349-11 and other parts that define methods for specific properties such as insoluble matter, volatile matter and specific gravity. National adoptions (e.g., BS ISO 10349‑13:2002) are typically identical to the ISO text.

Keywords

photography, photographic-grade chemicals, pH determination, test method, ISO 10349, quality control, pH electrode, calibration, ISO/TC 42.

FAQ

Q: What is this standard?

A: ISO 10349-13:2002 is an International Standard that specifies a laboratory test method for determining the pH of solutions of photographic‑grade chemicals (Edition 1, published November 2002).

Q: What does it cover?

A: It covers the general procedure and requirements to measure pH to about ±0.1 pH unit, including electrode selection and calibration, sample handling and temperature control. It is intended for reagent quality control and not for monitoring formulated processing baths.

Q: Who typically uses it?

A: Chemical manufacturers, QC laboratories testing photographic‑grade reagents, imaging science/conservation labs and standards bodies that adopt or reference ISO 10349 series methods.

Q: Is it current or superseded?

A: The ISO bibliographic record shows ISO 10349-13:2002 as published in November 2002 and confirmed during ISO’s systematic reviews (most recently confirmed in 2021), so the 2002 edition remains the current published edition.

Q: Is it part of a series?

A: Yes — ISO 10349 is a multipart standard covering test methods for photographic‑grade chemicals; Part 13 is the pH determination method and is published alongside other parts addressing different test parameters.

Q: What are the key keywords?

A: Photographic‑grade chemicals, pH, measurement, test method, quality control, ISO 10349, ISO/TC 42.