JY/T 0075-2011Broad bean leaves under the skin (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work_Part 1. Structure and Preparation of Standards" this standard replaces JY 75-1982 "Technical Conditions for Faba Bean Leaf Lower Skin Packing". In addition to editorial changes, the main technical changes are as follows.

-Add product model name;

-Cancel the classification of the original qualified products into first-class products and second-class products.

Please note that some elements of this standard may involve patents. The issuer of this standard is not 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).

Standard JY 75-1982 drafting unit. Wuhan Teaching Instrument Factory.

The main drafter of standard JY 75-1982. Liu Yiqin.

This standard was drafted. Teaching Instrument Research Institute of the Ministry of Education.

1 Scope

This standard specifies the model designation, requirements, test methods, inspection rules, marks, instructions, packaging, Transportation and storage.

This standard applies to primary and secondary school teaching broad bean leaf slide epidermis slide specimens.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document.

JY 0026-1991 teaching instrument and teaching equipment product model naming method JY/T 0067-2011 General requirements for biological slide specimens

3 Model designation

4 Requirements

4.1 Slides and coverslips, appearance, specimen collection and processing, specimen staining, and specimen covers should comply with JY/T 0067-2011 Chapter 4.

4.2 Specimens should be taken from the lower epidermis of fresh broad-stemmed broad bean leaves.

4.3 Specimens should be tiled pieces, each piece of material should be not less than 2mm x 2mm, cut around neatly.

4.4 It should be possible to see the irregular epidermal cells and their nuclei and the stomata scattered between the epidermal cells.

4.5 The morphology of the guard cells should be normal, and the nucleus and chloroplast should be clearly visible.

4.6 The materials are neat and the attached mesophyll or dirt shall not affect the observation.

4.7 The closed air hole shall not exceed 2/3.

4.8 The cytoplasm is uniformly colored, the nuclei are obvious, and the cell boundaries are clear.

5 Test method

5.1 According to the provisions of Chapter 5 of JY/T 0067-2011.

5.2 Specimens are examined at a microscope magnification of 100 times.

6 Inspection rules

6.1 Implementation of the relevant provisions of Chapter 6 of JY/T 0067-2011.

6.2 In this standard, 4.3, 4.4, 4.5, 4.7 and 4.8 are the main performance indicators.

7 Signs, instructions, packaging, transportation and storage

Should comply with the relevant provisions of Chapter 7 of JY/T 0067-2011.