ISO 1042-1998 PDF

Full title and description

ISO 1042:1998 — Laboratory glassware — One-mark volumetric flasks. This international standard specifies the designations, capacities, dimensional requirements, accuracy classes and marking for single‑mark volumetric flasks used in laboratory volumetric measurements and the preparation of standard solutions.

Abstract

ISO 1042:1998 defines a series of one‑mark (single‑graduation) volumetric flasks for laboratory use, covering permitted capacities, reference temperature, material and dimensional requirements, classes of accuracy (A/B and AW/BW for wide necks), stability/shape criteria, testing and marking. It updates earlier editions and provides requirements needed for reliable volumetric determinations in analytical work.

General information

• Status: Published (International Standard; currently at a review/revision stage).
• Publication date: 2 July 1998 (Edition 4, 1998).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 17.060 — Measurement of volume, mass, density, viscosity / Laboratory glassware.
• Edition / version: Edition 4 (1998).
• Number of pages: 7 pages.

Scope

Specifies requirements for a series of one‑mark volumetric flasks intended for preparation of standard solutions and routine volumetric work. The standard covers nominal capacities (from small to large volumes as identified in the standard), accuracy classes, essential dimensions and tolerances, permitted shapes (narrow‑ and wide‑neck, pear or conical bodies), and marking requirements necessary for correct identification and use in laboratories.

Key topics and requirements

• Capacities covered: a defined series of nominal volumes used for volumetric flasks (including commonly used sizes from 1 ml up to several litres as specified in the standard).
• Accuracy classes: Class A (higher accuracy) and Class B (lower accuracy); wide‑neck variants designated AW and BW.
• Reference temperature: 20 °C is the standard reference temperature for the nominal capacity (national alternatives are noted where adopted).
• Materials: Glass requirements (e.g., hydrolytic class, coefficient of thermal expansion limits such as borosilicate 3.3) to ensure durability and dimensional stability.
• Dimensions and tolerances: Essential neck diameters, graduation‑line thickness and positions, overall dimensions and stability (e.g., anti‑topple criteria) are specified.
• Shape and stability: Permits pear‑shaped or conical bodies; stability tests (inclination/topple criteria) for different capacities.
• Testing and verification: Capacity and accuracy verification are carried out in accordance with referenced procedures (for example ISO 4787 methods for volumetric apparatus testing).
• Marking and traceability: Required permanent markings include nominal capacity, reference temperature (e.g., “20 °C”), “In” or equivalent indication (adjusted to contain), class designation (A/B or AW/BW), maker’s identification and other identification marks as required for verification and traceability.

Typical use and users

This standard is used by manufacturers of laboratory glassware, quality and calibration laboratories, analytical chemists, research and educational laboratories, and regulatory bodies that specify or verify volumetric apparatus for accurate solution preparation and volumetric analysis.

Related standards

ISO 1042 is related to other ISO documents covering volumetric apparatus and glass properties, notably ISO 4787 (methods for use and testing of volumetric glassware), ISO 719 (hydrolytic classification of glass), and other ISO/EN standards on volumetric and pipetting apparatus and calibration procedures. These related standards are commonly referenced together in laboratory metrology and equipment specifications.

Keywords

volumetric flask, one‑mark, single‑mark, laboratory glassware, Class A, Class B, AW, BW, calibration, nominal capacity, ISO 1042, volumetric apparatus.

FAQ

Q: What is this standard?

A: ISO 1042:1998 is an international standard that specifies requirements for one‑mark (single‑graduation) laboratory volumetric flasks, including capacities, accuracy classes, dimensions, material and marking requirements.

Q: What does it cover?

A: It covers the permitted series of nominal capacities, reference temperature (standard 20 °C), dimensional and tolerance requirements for neck and body, allowed shapes (narrow and wide necks), stability criteria, testing/verification procedures and mandatory marking for traceability and class identification.

Q: Who typically uses it?

A: Manufacturers of volumetric flasks, calibration and testing laboratories, analytical chemists, research and teaching laboratories and purchasers who require specified accuracy and traceability for volumetric glassware.

Q: Is it current or superseded?

A: ISO 1042:1998 is a published International Standard (Edition 4, 1998) that was last reviewed/confirmed in 2019 and remains the current published version; however, ISO has registered a revision project (ISO/DIS 1042 / related committee drafts) to update and replace the 1998 edition, so a newer edition is under development.

Q: Is it part of a series?

A: It forms part of the ISO portfolio addressing laboratory glassware and volumetric apparatus (ISO/TC 48/SC 8) and is used alongside other standards on volumetric equipment and glass properties (for example ISO 4787 and ISO 719).

Q: What are the key keywords?

A: Volumetric flask, one‑mark, calibration, Class A, Class B, AW, BW, laboratory glassware, nominal capacity, ISO 1042:1998.