Overview
ISO 3819:2015 - Laboratory glassware - Beakers defines an internationally accepted series of glass beakers for laboratory use. It specifies types, capacities, materials, dimensional requirements, construction details, marking and thermal shock resistance to ensure interchangeability, safe handling and consistent performance across manufacturers.
Key topics and technical requirements
- Types of beakers: three types are covered - low-form with spout, low-form thick-walled with spout, and tall-form with spout.
- Series and capacities: the standard defines nominal capacities across the series. Examples include low-form beakers from 5 ml up to 10 000 ml, thick-walled low-form (150–5 000 ml), and tall-form (50–5 000 ml).
- Material: beakers shall be made of borosilicate glass 3.3 in accordance with ISO 3585; glass must be free from harmful residual strain and visible defects.
- Dimensions and tolerances: tables specify external diameter, overall height and minimum wall thickness for each nominal capacity. External diameter tolerance is ±5% (to accommodate global manufacturing variations). Radius at the base and wall-thickness minimums are specified by capacity ranges.
- Construction details: requirements cover base stability (no rocking), slightly flared upper edge (brim diameter ~5–15% greater than body), spout design for a clean pour, presence/accuracy of volumetric scale (optional), and a marking area suitable for pencil.
- Thermal shock resistance: beakers must demonstrate thermal shock resistance of 160 °C when tested per ISO 718.
- Marking: mandatory permanent markings include nominal capacity, maker’s/vendor’s name or mark, and glass type (if not otherwise identifiable).
Practical applications and users
ISO 3819 is essential for:
- Laboratory equipment manufacturers - to design and produce beakers that meet international dimensional, material and performance requirements.
- Procurement and quality assurance teams - to specify compliant beakers in purchasing documents and incoming inspection criteria.
- Laboratory managers and technicians - to choose appropriate beakers for routine mixing, heating and liquid handling with consistent safety and interchangeability.
- Regulatory and standards bodies - for harmonized acceptance of glassware across institutions and countries.
Practical benefits include improved compatibility between brands, predictable thermal performance during heating/cooling, safer pouring and handling, and clear traceability through standardized marking.
Related standards
- ISO 718 - Laboratory glassware: thermal shock and thermal shock endurance - test methods (used to verify the 160 °C requirement).
- ISO 3585 - Borosilicate glass 3.3 - properties (material specification referenced by ISO 3819).
Keywords: ISO 3819, laboratory glassware, beakers, borosilicate glass, dimensions, thermal shock resistance, ISO 718, ISO 3585, beaker capacities, laboratory standards.
