ISO 10336-1997 PDF

Full title and description

ISO 10336:1997 — Crude petroleum — Determination of water — Potentiometric Karl Fischer titration method. This International Standard specifies a potentiometric Karl Fischer titration procedure for the direct determination of water content in crude petroleum.

Abstract

ISO 10336:1997 defines sample preparation, reagents, potentiometric titration technique, calculation of water content and basic quality controls for determining water in crude oil using the Karl Fischer potentiometric method. The published document is compact (approximately 10 pages) and intended for laboratory and quality-control use in the petroleum sector.

General information

• Status: Published (confirmed standard).
• Publication date: 1997-12 (Edition 1, 1997).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 75.040 (Petroleum products — testing and analysis).
• Edition / version: Edition 1 (1997).
• Number of pages: 10 pages (approx.).

These bibliographic details and the standard's current confirmed status are listed on the ISO bibliographic record. The standard is available in PDF from ISO and authorized standards resellers.

Scope

Specifies a potentiometric Karl Fischer titration method for the direct determination of water content in crude petroleum. The procedure covers sampling considerations, titration apparatus and reagents, potentiometric end-point detection, calculation of results and basic quality assurance measures appropriate for laboratory analysis of crude oils. National adoptions and modified versions (for example GB/T 26986-2011) exist that adapt the method for local practice and provide additional guidance on sample types and measurement ranges.

Key topics and requirements

• Potentiometric Karl Fischer titration technique for water determination in crude oil samples.
• Requirements for reagents, titrants and conditioning of the titration cell.
• Sample handling and injection procedures to minimise loss or ingress of water.
• Potentiometric end-point detection and interpretation of titration curves.
• Calculation of water content (mass fraction) including density considerations where required.
• Basic quality assurance and control practices for reproducible results.

Typical use and users

Used by analytical laboratories in refineries, custody-transfer testing, exploration and production laboratories, petrochemical quality-control units, and standards laboratories that perform moisture determination in crude petroleum. Typical users include laboratory technicians, chemists, QA/QC managers and regulatory testing bodies involved in petroleum analysis.

Related standards

ISO 10336:1997 is part of the body of ISO standards and national equivalents dealing with petroleum product analysis and test methods. Some countries have adopted or modified the method into national standards (for example GB/T 26986-2011 in China). Laboratories will often use ISO 10336 together with other ISO and national test methods covering sampling, handling and complementary analyses.

Keywords

ISO 10336, crude petroleum, water determination, Karl Fischer titration, potentiometric titration, moisture analysis, petroleum testing, crude oil quality.

FAQ

Q: What is this standard?

A: An ISO International Standard (ISO 10336:1997) that specifies a potentiometric Karl Fischer titration method for determining the water content of crude petroleum.

Q: What does it cover?

A: It covers the analytical method (potentiometric Karl Fischer titration), sample handling and preparation guidance, titration apparatus and reagents, calculation of water content and basic quality-control recommendations for crude oil samples.

Q: Who typically uses it?

A: Analytical laboratories in the oil and gas industry (refineries, production and testing labs), petrochemical quality-control units, and regulatory or standards laboratories performing moisture/water determinations on crude oil.

Q: Is it current or superseded?

A: As of the ISO bibliographic listing the 1997 edition has been subject to periodic review and is shown as a confirmed (reviewed) International Standard; copies are available in current PDF and print formats from ISO and authorized resellers. Users should check the ISO catalogue or their national body for the absolute latest confirmation/supersession status before relying on the document.

Q: Is it part of a series?

A: It is one of the ISO test-method standards developed under technical committee work for petroleum products (ISO/TC 28 and its subcommittees). While not numbered as a continuous "series" with adjacent part numbers, it sits alongside other ISO petroleum analysis methods and national adoptions that address related test procedures.

Q: What are the key keywords?

A: Crude petroleum; water content; Karl Fischer; potentiometric titration; moisture; petroleum testing; ISO 10336.