7713 (ISO International Standard INTERNATIONALORGANIZATION FORSTANDARDIZATIONMEXAYHAPOAHAAOPrAHW3ALMANOCTAHAAPTM3AUMM-ORGANISATIONINTERNATIONALEDENORMALISATION Laboratory glassware - Disposable serological pipettes Verreriedelaboratoire-Pipettes serologiquesausageunique First edition - 1985-05-15 UDC542.3:531.732 Ref. No. ISO 7713-1985 (E) ISO7713-1985 (E) Descriptors : laboratory equipment, laboratory glassware, pipettes, specifications, dimensions, tests, marking. Pricebased on 4pages Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (iSO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the iSo Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 7713 was prepared by Technical Committee ISO/TC 48, Laboratory glassware and related apparatus. International Organization for Standardization, 1985 ? Printed in Switzerland ISO 7713-1985 (E) INTERNATIONAL STANDARD Laboratory glassware - Disposable serological pipettes repeatability (of a pipette): The closeness of agreement 1 Scope and field of application 3.3 between the individual volumes obtained by applying the test This International Standard specifies requirements for procedure specified in clause 9. It is quantified by the impreci- disposable glass serological pipettes adjusted to deliver -- in- sion. cluding blow-out pipettes - suitable for general laboratory pur poses. The details specified are in conformity with ISo 8417. in the cases where the distributions are Gaussian References 2 4 Basis of adjustment ISo 719, Glass - Hydrolytic resistance of glass grains at 98 °C 4.1 Unit of volume - Method of test and classification. 1) The unit of volume is the cubic centimetre (cm3), for which the Iso 1769, Laboratory glassware - Pipettes - Colour coding name millitre (ml) may be used. Iso 3534, Statistics -- Vocabulary and symbols. NOTE - The term mililitre (ml) is commonly used as a special name for the cubic centimetre (cm3), in accordance with the International IS0 8417, Laboratory volumetric instruments Disposable - System of Units (SI). volumetric articles - Principles of design and construction.2) 4.2 Reference temperature 3 Definitions The reference temperature, i.e. the temperature at which the pipette is intended to deliver its nominal volume (nominal For the purpose of this International Standard, the following capacity), is 20 oc. definitions apply. NOTE If thepipette is required foruse in acountrywhichhas adopted a reference temperature of 27 °c (the alternative specified in disposable serological pipette: A serological pipette 3.1 ISO 8417 for tropical use), this value shall be substituted for 20 °C. intended to be used once only and then discarded. NOTE -- Such pipettes will only be expected to provide their specified Dimensions, delivery times performance during the original operation. The dimensions and delivery times shall be as shown in the accuracy (of a pipette): The closeness of agreement be- table. 3.2 tween the nominal volume and the mean volume, obtained by applying the test procedure specified in clause 9. It is quantified The delivery time shall be determined with the pipette un- by the inaccuracy of the mean. plugged, and with distilled water at a temperature of 20 oC. 1) At present at the stage of draft. (Revision of ISO 719-1981.) 2) At present at the stage of draft. 1