UNE-EN ISO 8655-4:2022

This part of ISO 8655 specifies

metrological requirements,

maximum permissible errors,

requirements for marking and

information to be provided for users,

for dilutors with a sample uptake capacity (In) from 5 ¼l to 10 ml and a diluent capacity (Ex) from 50 ¼l

to 100 ml. They are designed to deliver the sample and diluent together in measured proportion and

measured volume.

NOTE General requirements and definitions of terms for piston-operated volumetric apparatus are given

in ISO 8655-1. The gravimetric reference measurement procedure for the determination of volume is given

in ISO 8655-6. Alternative methods for the determination of volume are described in ISO 8655-7. For safety

requirements of electrically powered dilutors, see regional or national safety standards.