ISO 4787-1984 rus PDF

Full title and description

St ISO 4787-1984 rus — Laboratory glassware — Volumetric glassware — Methods for use and testing of capacity. This entry refers to the Russian-language edition/representation of the original ISO 4787:1984 international standard, which sets out procedures for determining and verifying the capacity of common volumetric instruments (pipettes, burettes, volumetric flasks, graduated measuring pipettes and cylinders) used in laboratory practice.

Abstract

The standard provides a general procedure based on determination of the volume of water either contained in a vessel or delivered by it, using the measured mass of water and its density. Procedures are applicable to volumetric glassware with nominal capacities typically in the range 0.1 ml to 2 000 ml, and cover apparatus and materials, accuracy classes, setting of the meniscus, delivery time, test procedures and handling for different types of volumetric ware.

General information

• Status: Withdrawn (original 1984 edition withdrawn and later revised).
• Publication date: November 1984 (first edition — 15 November 1984 recorded in bibliographic records).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 17.060 — Laboratory glassware; measurement of liquid volumes.
• Edition / version: Edition 1 (1984).
• Number of pages: 13 pages (first edition).

Scope

ISO 4787:1984 defines methods for the use and for testing the capacity of volumetric glassware used in laboratories. It is intended for instruments with nominal capacities commonly between 0.1 ml and 2 000 ml and addresses single-volume (one-mark) pipettes, graduated pipettes, dilution pipettes, burettes, volumetric flasks and graduated measuring cylinders. The procedures are aimed at determining the delivered or contained volume by weighing water under specified conditions and thus establishing conformity with the appropriate tolerance class.

Key topics and requirements

• Principle of volume determination by mass of water and reference to water density at defined temperature.
• Requirements for apparatus and materials used during testing (balances, thermometers, distilled water, drying conditions).
• Specification of accuracy/tolerance classes and how to interpret measurement results against them.
• Procedures for setting the meniscus and for correct filling/emptying of volumetric instruments.
• Delivery time and waiting-time rules for certain pipette/burette types to ensure repeatable results.
• Handling and test procedures tailored to different types of volumetric ware (transfer pipettes, graduated pipettes, burettes, volumetric flasks, graduated cylinders).

Typical use and users

Laboratories (analytical, chemical, clinical, educational), calibration and metrology laboratories, manufacturers of volumetric glassware, quality assurance and regulatory bodies use the procedures to verify and calibrate volumetric instruments, to demonstrate compliance with specified tolerance classes and to train personnel in correct handling and measurement technique.

Related standards

The standard is linked to other ISO standards that specify product definitions and additional test methods, for example ISO 835 (graduated pipettes), ISO 1042 (volumetric flasks), ISO 4788 (graduated measuring cylinders), ISO 3507 (pycnometers) and later consolidated revisions of ISO 4787 itself. Users should consult the subsequent revisions of ISO 4787 for the most up-to-date combined guidance.

Keywords

volumetric glassware, volumetric instruments, calibration, capacity testing, pipette, burette, volumetric flask, laboratory glassware, meniscus, delivery time, ISO 4787.

FAQ

Q: What is this standard?

A: ISO 4787:1984 is an international standard titled "Laboratory glassware — Volumetric glassware — Methods for use and testing of capacity" that specifies how to test and use common volumetric instruments to determine their capacity and compliance with tolerance classes.

Q: What does it cover?

A: It covers the general principle of determining volume by weighing water, the required apparatus and materials, rules for setting the meniscus, delivery and waiting times, and specific test procedures for pipettes, burettes, volumetric flasks and graduated measuring instruments typically in the 0.1 ml to 2 000 ml range.

Q: Who typically uses it?

A: Analytical and clinical laboratories, calibration and metrology laboratories, manufacturers of volumetric glassware and quality/inspection personnel who perform calibration, verification and routine checks of volumetric measuring instruments.

Q: Is it current or superseded?

A: The 1984 edition has been withdrawn and later revised; ISO 4787 was updated in subsequent editions (notably a 2010 revision and a current 2021 edition). Users requiring an up-to-date, consolidated procedure should refer to the latest ISO 4787 edition (2021).

Q: Is it part of a series?

A: Yes — ISO 4787 interacts with other ISO standards for laboratory volumetric apparatus (for example ISO 835, ISO 1042, ISO 4788 and ISO 3507) that together define definitions, product specifications and complementary test methods for glass and plastic volumetric instruments.

Q: What are the key keywords?

A: Volumetric glassware, capacity testing, calibration, pipette, burette, volumetric flask, laboratory glassware, ISO 4787.