JY/T 0444-2011Glass jars for teaching (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

Please note that some elements of this standard may involve patents. The issuer of this standard should not be held responsible for identifying these patents.

This standard was proposed by the National Technical Committee for Standardization of Teaching Instruments (SAC/TC125).

This standard is under the jurisdiction of the National Technical Committee for Standardization of Teaching Instruments (SAC/TC125).

This standard was drafted. Sichuan Longchang Glass Instrument Factory, Zhejiang Educational Technology Center, Sichuan Ziyang Glass Instrument Factory, Sichuan Scientific industry teaching equipment limited liability company.

1 Scope

This standard specifies the classification and nomenclature of lower mouth bottles, technical requirements, test methods, inspection rules, packaging, transportation, and storage.

This standard applies to teaching utensils and valveless bottles.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this document.

For undated references, the latest version (including all amendments) applies to this document.

GB 191-2008 packaging storage and transportation pictogram GB/T 2828.1-2003 Counting sampling inspection procedures. Part 1. Sampling plan for batch inspection according to acceptance quality limit (AQL) JY 0001-2003 General quality requirements for teaching instruments and equipment products JY 0002 Inspection rules for teaching instruments and equipment products JY 0026-1991 teaching instrument and teaching equipment product model naming method JY/T 0423-2011 General quality requirements and test methods of teaching glass instruments

3 Classification and naming

4 Requirements

9 Cap closure suture height <=1.5, no sharp edges suture height <=1.5, no sharp edges

10 8 single stripes, 12 not concentrated, not concentrated

4.3.2 The appearance defects that should not exist shall comply with JY/T 0423-2011 Section 5.1.1.

4.3.3 The width of light spots and coarse sand prints should be less than 6mm, and the length should be less than 1/2 of the plug height. Only no more than 2 should be allowed.

The lower part.

4.3.4 The center deviation between the small hole of the stopper and the small hole of the bottleneck should be less than 0.5mm.

4.3.5 The uniformity of wall thickness shall comply with JY/T 0423-2011 Section 4.1.1.2.

4.4 Matte

4.4.1 The frosted surface of the valveless, valved-down bottle and the valved-down bottle (faucet bottle) should be fine-ground, and the frosted surface should be even and fine.

The height of the frosted surface of the mouth is not less than 92% of the nominal size, and light spots and rough sand marks less than 6mm in width and less than 1/2 of the plug height should only allow 2 it should not be concentrated in the middle and lower part of the neck; the lower mouth is rough ground (repeated from 4.3.3)), the spot width should be less than 10mm, and the length should be less than the plug height.

4.4.2 The joints and pistons of the lower valve bottle (faucet bottle) should be conical frosted standard mouth.

4.5 Chemical stability should meet water resistance HGB level 1, acid resistance H1 level, alkali resistance A2 level.

4.6 Internal stress

The internal stress should not be greater than 160nm/cm.

4.7 Adhesiveness

4.7.1 The lower bottle with valve shall not be lower than the second grade.

4.7.2 Valveless lower spout bottles shall not be lower than Class III.

4.8 Environmental test the environmental test shall be in accordance with Chapter 8 of JY/T 0423-2011.

5 Test method

5.1 Dimensions are measured with a vernier caliper of 0.02 mm and a steel ruler with a graduation value of 0.5 mm, which shall meet the requirements of 4.2 of this standard. Exterior Disadvantages The length of the test with a reading microscope should meet the corresponding requirements of this standard.

5.2 Wall thickness and uniformity shall be tested in accordance with JY/T 0423-2011, Section 4.1.1.2, and shall meet the requirements of 4.2 and 4.3.5 of this standard.

5.3 Water resistance, acid resistance, and alkali resistance are tested in accordance with JY/T 0423-2011 Section 6.5.2, which shall meet the requirements of 4.5 of this standard.

5.4 The internal stress shall be tested in accordance with JY/T 0423-2011 Section 6.1.2 and shall meet the requirements of 4.6 of this standard.

5.5 Adhesion test The test according to Table 2 of JY/T 0423-2011, Section 4.3.2 shall meet the requirements of 4.7 of this standard.

5.6 The material test shall be in accordance with Article 7.2 of JY/T 0423-2011, shall comply with 4.1 of this standard, and shall not have obvious yellow-green.

5.7 The remaining sensory tests shall meet the corresponding requirements of this standard.

5.8 The environmental test shall be in accordance with Chapter 8 of JY/T 0423-2011 and shall comply with 4.8 of this standard.

6 Inspection rules

6.1 Inspection classification the inspection of this product is divided into factory inspection and type test.

6.2 Inspection items and inspection methods the inspection items and inspection methods of this product shall conform to Table 3.

Table 3 Inspection items, inspection methods and defect classification

6.3 Lot rules and sampling methods

6.3.1 The factory inspection shall be based on the natural batch of delivery, and the type inspection shall be based on the inventory array.

6.3.2 When leaving the factory, all the inspection items should be inspected first, and then samples should be taken from the qualified products of all inspection items.

test.

6.3.3 The samples for type inspection shall be taken from the products that passed the factory inspection.

6.3.4 The sampling methods for factory inspection and type inspection shall be in accordance with GB/T 2828.1-2003, and the inspection plan shall be a normal sampling once. The inspection level is General II.

6.4 Non-conformance determination

6.4.1 The classification of defects A, B and C shall conform to Table 3.

6.4.2 The criteria for a single sample shall be in accordance with Table 4.

No. Inspection Content Defect Classification Factory Inspection Type Inspection

1 Geometry and fit

1.1 Dimension A -

1.2 Wall thickness B -

1.3 Frosting Requirements A -

1.4 Grinding size A -

1.5 Adhesion A -

2 appearance requirements and test methods

2.1 Appearance defect B -

2.2 Color C -

2.3 Oral Processing C -

2.4 Bottom B -

3 Physical and chemical properties and test methods

3.1 Internal stress A -

3.2 Chemical stability B--

4 Material A--

5 Environmental test

5.1 Stacking Code B--

5.2 Vibration A--

5.3 Free fall A--

Note. "-" in the table means full inspection for batch products, "-" means sample inspection for batch products, and "-" means no inspection.

Table 4 Single item judgment rules

Classification A defect B defect C defect Pass 0 <= 2 <= 4 Unqualified >=1 > 2 > 4

6.4.3 The quality of the inspection batch shall be determined in accordance with GB/T 2828.1-2003, a normal sampling once inspection plan, AQL value. internal stress and under valve the tightness of the mouth bottle is taken as 1.5, the external size is taken as 6.5, and the rest is taken as 2.5.

6.5 Review rules

The re-inspection shall implement the transfer rules in accordance with GB/T 2828.1-2003.

6.6 Quality supervision inspection Press JY 0002.

7 Marking, packaging, transportation and storage

7.1 Signs

Should comply with the provisions of Chapter 11 of JY 0001-2003.

7.2 Packaging, transportation and storage

7.2.1 It shall comply with the provisions of Chapter 12 of JY 0001-2003.

7.2.2 The products shall be separated by earthquake-resistant packaging materials and fixed in the packing box.

7.2.3 The outer packaging box shall be provided with a "fragile item" pictogram in accordance with the provisions of GB 191-2008.