JY/T 0199-2011Frog embryo development model (English PDF)

3.1 Naming rules

The model name of the product is JY 0026-1991.

3.2 Nomenclature

The frog embryo development model is named.

SM - WPT - FD - 8

Number of product combinations, 8 Product feature code, staged Product name Pinyin prefix, "frog embryo" Product model classification code, biological model Model example.

SM-WPT-FD-8 represents biological model, frog embryo model, 8 stages.

4.1 Use environmental conditions

Temperature. -10 °C ~ 40 °C, relative humidity. not more than 90%.

4.2 Anatomy

4.2.1 General requirements

4.2.1.1 The product consists of eight enlarged frog embryo models at different developmental stages, which are respectively fertilized eggs, four-cell stage, eight-cell stage, Blastocyst stage, early gastrointestinal stage, late gastrointestinal stage, preneuronal stage, 5.5 mm stage

4.2.1.2 The diameter of the first six models is not less than 100mm, and the last two are extended proportionally. Each model is placed on a stand or base.

4.2.1.3 The cleavage stage (fertilized egg, four-cell stage, eight-cell stage) shows the complete appearance, and the other stages are profiled to show its internal structure.

4.2.1.4 In the embryo section, the ectoderm is blue, the mesoderm is pink, and the endoderm is yellow.

4.2.1.5 The appearance and internal structure of each stage of the frog embryo should be correct.

4.2.2 Specific requirements

4.2.2.1 Fertilized eggs, four-cell stage and eight-cell stage. the appearance of the animal poles, plant poles, and crescent regions should be correctly displayed in color.

4.2.2.2 Blastocyst stage. showing single germ layer and blastocyst cavity, its appearance and section should correctly show that the cells of animal poles are small and the plants are extremely fine the cells are larger, and the cavity of the blastocyst is biased towards the characteristics of the animal pole.

4.2.2.3 Early gastrula. On the section, the dorsal lip and the endoderm and ectoderm should be displayed correctly.

4.2.2.4 Late gastrula. On the section, the outer, middle and inner germ layers, the gastrointestinal cavity, the reduced blastocyst cavity, and the embryonic foramen should be displayed correctly.

Back lip, belly lip and yolk plug.

4.2.2.5 Pre-neuronal embryo. The shape is elongated, and some longitudinal and transverse sections are made. Neural plates, spinal cords, mesoderm, and gut cavity should be displayed correctly structure.

4.2.2.6 5.5mm stage. Embryo body gradually grows, head and tail longitudinal sections (removal of body wall) are made along the midline of body length, and cross section is made in the middle (cross section should pass Heart and middle body). This model retains the full-shaped one-sided mouthpiece, suction cup, gill cleft, olfactory fossa, cup and anus; longitudinal and transverse sections the brain, neural tube, chordal cord, digestive tract, liver, heart, and body segments are shown on one side.

4.2.2.7 The following parts of the model shall be affixed with name or number tags. animal pole, plant pole, blastocyst cavity, endoderm, ectoderm, mesoderm, and gastrointestinal Cavity, dorsal lip, ventral lip, yolk plug, neural plate, spinal cord, oral plate, gill cleft, optic cup, anus, brain, neural tube, digestive tract, heart.

4.3 Materials and processes

4.3.1 The model should be made of thermoplastics such as rigid PVC. Glass fiber reinforced plastics (FRP) or fragile and Deformed material.

4.3.2 The content of heavy metals in the coating of the model shall conform to GB 5.2.5.4 of GB 21746-2008.

4.3.3 The joints shall be modified naturally and firmly.

4.3.4 The color of the structure of each part should be correct and clear, and the spraying transition should be natural and there should be no spillage.

4.3.5 The product shall also comply with JY 0001-2003 sections 5.2, 6.9, 6.12, 6.27, 7.4.3, 7.7 and 9.1 to 9.6.

4.4 Environmental test

4.4.1 The product shall be tested for temperature, humidity, and free drop in accordance with JY 0213-1994 Section 3.1, and shall be subjected to a drop test in an unpackaged state.

4.4.2 The drop height of the drop test in the non-packaging state is 1m. The drop surface shall be the largest surface of the model outline. After the test, it shall not be broken or cracked.

If there is a stand, it should not be included.

5.1 Relevant dimensions

Measured with a steel ruler with a division value of 1 mm.

5.2 Anatomy, appearance and workmanship

Sensory test.

5.3 Environmental test

5.3.1 Temperature, humidity and free fall test According to JY 0213-1994 Section 4.1, 4.2, 4.6.

5.3.2 Drop test in unpacked state. Lay a wooden board with a thickness of 20mm ± 3mm on the cement floor, and keep the board rigidly connected to the cement floor touch. During the test, the model's falling surface is downward, and it will fall freely from a height of 1m. Once tested, it shall meet 4.4.2.

6.1 Inspection classification

Product inspection is divided into factory inspection, type inspection and quality supervision inspection.

6.2 Inspection items

The inspection items and methods of factory inspection and type inspection are shown in Table 1.

Table 1 Inspection items and methods of factory inspection and type inspection

Item No. Inspection Item Standard Provisions Factory Inspection Type Inspection

1 General requirements 4.2.1 -

2 Specific requirements 4.2.2 -

3 Materials and processes 4.3 -

4 Environmental test 4.4--Note. "-" in the table means all inspection items, and "-" means no inspection items.

6.3 Sampling methods

6.3.1 The factory inspection shall be batched according to the natural batch of delivery, and the type inspection shall be batched according to the stock array.

6.3.2 During the factory inspection, all the inspection items shall be inspected first, and the sampling inspection items shall be inspected among the qualified products.

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 JY 0002.

6.4 Non-conformance determination

6.4.1 The judgment of sampling inspection shall be in accordance with JY 0002.

6.4.2 The failure criterion of a single sample shall be in accordance with JY 0002.

6.4.3 The factory inspection shall be determined according to the unqualified criterion of a single sample.

6.4.4 4.2 of this standard (except for slight defects in the color and spray transition or slight inaccuracy in the spray transition), 4.3.1, 4.3.2, and 4.3.4 is the main performance indicator.

6.5 Review rules

6.5.1 Unqualified products can be submitted for inspection again after rework.

6.5.2 If the cause of the batch failure is a sampling inspection item, the item shall be changed to a full inspection during the re-inspection.

6.6 Quality supervision inspection

Quality supervision and inspection shall be in accordance with JY 0002.