JY/T 0434-2011Glass dropper 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, technical requirements, test methods, inspection rules, packaging, transportation, and storage of drip bottles.

This standard applies to teaching dropper 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 acceptance procedure Part 1. Sampling plan for batch inspection for retrieval by 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

6 Iron filings <=1 <=2

7 Shoulder collapse depth <= 3-

8 Necking depth <= 4-

9 4 single stripes, not concentrated

10 Crooked neck without obvious skew

Note. "-" means not required.

4.4 Wall thickness uniformity the uniformity of wall thickness shall comply with JY/T 0423-2011 Section 4.1.1.2.

4.5 Matte

Matte surface. The bottle mouth is finely ground. The matte surface should be uniform and delicate. The width of the light spots and coarse sand marks should be less than 6mm, and the length should be less than 1/3 of the plug height.

No more than two are allowed and should not be concentrated in the middle and lower part of the neck.

4.6 Rubber cap

The dropper should be attached with a natural rubber cap, which should be red, with good suction and release flexibility, and an opening diameter of 6mm, which fits firmly and stably with the dropper mouth.

4.7 Adhesiveness

Should comply with Level 2.

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

4.9 Internal stress

The internal stress should not be greater than 180 nm/cm.

4.11 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 with a division value of 0.02mm and a steel ruler with a division value of 0.5mm, which shall meet the requirements of 4.2 of this standard.

begging. The length of the appearance defect shall be tested with a reading microscope and shall meet the corresponding requirements of this standard.

5.2 The wall thickness and uniformity shall be tested in accordance with JY/T 0423-2011 Section 4.1.2 and shall comply with 4.2 and 4.5 of this standard.

5.3 Adhesion test The test according to JY/T 0423-2011 Section 4.3.2 shall comply with this standard 4.7.

5.4 Water resistance, acid resistance and alkali resistance are tested in accordance with JY/T 0423-2011, No. 6.5.5, which shall comply with 4.8 of this standard.

5.5 The internal stress shall be in accordance with JY/T 0423-2011 Section 6.1.2 and shall comply with 4.9 of this standard.

5.6 The material test shall be in accordance with Article 7.2 of JY/T 0423-2011 and shall comply with 4.1 of this standard. The colorless transparent glass shall be colorless.

5.7 The color test of the brown-yellow bottle shall be in accordance with Article 6.2 of GB 3181-2008 and shall comply with 4.3.2 of this standard.

5.8 The other sensory tests shall meet the corresponding requirements of this standard.

5.9 The environmental test shall be in accordance with Chapter 8 of JY/T 0423-2011 and shall comply with 4.10 of this standard.

6 Inspection rules

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

6.2 Inspection items and inspection methods the inspection items and inspection methods for factory inspection and type inspection shall comply with Table 3.

Table 3 Inspection items and inspection methods for defect classification, factory inspection and type inspection

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 treatment (no requirement) C -

2.4 Bottom (no requirement, but lack of other requirements) 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.

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.

Table 4 Single sample determination 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. 1.5 for internal stress, external the shape size is 6.5, and the rest is 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.