ISO 4797:2015 実験用ガラス器具—円錐形の接地ジョイントを備えた沸騰フラスコ | ページ 2

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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, 2 (see www.iso.org/directives ).

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The committee responsible for this document is ISO/TC 48, Laboratory equipment in collaboration with CEN/TC 332, Laboratory equipment.

This third edition cancels and replaces the second edition (ISO 4797:2004), which has been technically revised to include the following changes:

• round-bottom flasks with nominal volumes of 3 l, 5 l, and 20 l have been added;
• overall heights of some round-bottom flasks of Series 1 (Table 3) have been modified;
• requirements for thermal shock endurance have been added.

1 Scope

This International Standard specifies requirements for an internationally acceptable series of boiling flasks with conical ground joints for general laboratory purposes.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.