GB/T 26699-2022Ball pens for exam (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 26699-2011 "Ballpoint Pens for Examination". Compared with GB/T 26699-2011, except for structural adjustment and editing In addition to the sexual changes, the main technical changes are as follows.

--- Changed the scope (see Chapter 1, Chapter 1 of the 2011 edition);

--- Added classification (see Chapter 4);

--- Changed the ink requirements and test methods (see 5.1, 7.1, 3.1, 5.1 of the 2011 edition);

--- Changed the ball diameter requirements (see 5.2, 3.2 of the 2011 edition);

--- Change the requirements for writing performance, dryness, and intermittent writing (see 5.3, 3.3 of the 2011 edition);

--- Increased requirements and test methods for writing lubricity (see 5.3, 7.11);

--- Increased the requirements and test methods for leakage resistance (see 5.3, 7.13);

--- Delete the requirements and test methods for the elasticity of metal clips (see 3.3 and 5.18 of the 2011 edition);

--- Increased the phthalate content requirements and test methods for accessible plastic parts (see 5.6, 7.24);

--- Changed the conditions of use of the circle writing machine (see 6.1, 4.1 of the 2011 edition);

--- Changed the specification of writing paper (see 6.2, 4.2 of the 2011 edition);

--- Delete the provisions for samples (see 4.3 of the 2011 edition);

--- Changed the environmental conditions (see 6.3, 4.4 of the 2011 edition);

--- Changed the test method for ball diameter (see 7.2, 5.1 of the 2011 edition);

--- Changed the test method for initial write performance (see 7.3.2, 5.2.2 of the 2011 edition);

--- Changed the test method for drying (see 7.6.2, 5.5.2 of the 2011 edition);

--- Changed the test method for intermittent writing (see 7.10, 5.15 of the 2011 edition);

--- Changed the test method for ethanol resistance (see 7.15.2, 5.11.2 of the 2011 edition);

--- Changed the test method for the difference between the diameter of the pen head and the outer diameter of the pen (see 7.20, 5.17 of the 2011 edition);

--- Changed the sample size of the type test (see 8.2.2, 6.2.2 of the 2011 edition);

--- Changed the marking requirements for transport packaging (see 9.1.5, 7.1.4 of the 2011 edition);

--- Changed the provisions on the shelf life (see 9.4.2, 7.4.2 of the 2011 edition).

1 Scope

This document specifies the classification, requirements, test instruments, materials and conditions, test methods, inspection rules and marks, packages of ballpoint pens for examinations packaging, transportation and storage.

This document applies to ballpoint pens and refills for exams.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 191 Graphical signs of packaging, storage and transportation

GB/T 2828.1 Counting Sampling Inspection Procedure Part 1: Lot-by-Lot Inspection Sampling Plan Retrieved by Acceptance Quality Limit (AQL)

GB/T 12654 writing paper

GB 21027 General requirements for safety of student supplies

QB/T 2309 Eraser

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Categories

4.1 The ballpoint pens used for the examination are divided into neutral ink ballpoint pens and water-based ink ballpoint pens according to different inks, and the refills are also classified according to this.

4.2 The ballpoint pen used for the examination is divided into fixed type and movable type according to the structure with or without the core. Water-based ink ballpoint pens and refills are classified according to their water storage structure Reservoir type and straight liquid type.

5 Requirements

5.1 The ink of the ballpoint pen and refill used for the test should be pigmented black ink, and the particle size (D50) in the ink should not be less than 30nm.

5.2 The ball diameter (D) of the ballpoint pen and refill used for the test should be. 0.40mm< D<=0.80mm.

5.3 The performance and physical and chemical properties of the ballpoint pen and refill used for the test shall meet the requirements in Table 1.