Portable soil pollution detection tool box

By designing a portable soil pollution detection toolbox, combining tool storage box and lightweight test tube, the existing toolbox is solved by solving the problems of large, fragile and inconvenient portability, and achieving lightweight portability and efficient detection.

CN119117452AActive Publication Date: 2024-12-13SHANDONG MEASUREMENT SCI RES INST
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Patent Information

Application Number
CN202411329922.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2024-12-13
Estimated Expiration
2044-09-24

AI Technical Summary

Technical Problem

The existing soil pollution detection tool box is too large and inconvenient to carry, lacks shock-absorbing buffering and push-pull structure, is fragile, has a large carrying weight and cannot be worn.

Method used

A portable soil pollution detection tool box is designed, using a combination of tool storage box and test tube, including a C-shaped clip and a long belt, with shock absorption buffer and push-pull structure. The tool storage box can be hung on the body, and the test tube is light and easy to carry. It has soil storage, masturbation, filtration and mixing detection functions.

Benefits of technology

It realizes the lightweight portability and convenient wearing of the toolbox, reduces the risk of accidental breakage, simplifies the access and detection process of tools, and improves the detection precision and effect.

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Abstract

The invention discloses a portable soil pollution detection tool box. The portable soil pollution detection tool box comprises a tool storage box. Belongs to the technical field of soil pollution detection toolbox structures, and is characterized in that a tool storage box is arranged, the overall structure of the tool storage box is smaller, so that the soil pollution detection toolbox is more convenient to carry, can be used as a test tube rack, is easier to open and close, and is provided with a damping and buffering structure to prevent detection test tubes from being accidentally broken; a push-pull structure is arranged, the process of taking out a detection test tube is simpler, the arranged detection test tube is lighter than other detection tools, carrying is lighter, the soil pollution detection tool box has the functions of soil storage, soil mashing, soil filtering and soil mixed detection, the detection process is finer, and the detection effect is better; a C-shaped clamp and a long belt are matched with the tool storage box, so that the soil pollution detection tool box can be directly hung on the body, and the tool box can be taken down and clamped on the body again more simply.
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Description

Technical Field

[0001] The invention relates to the technical field of soil pollution detection tool box structures, and in particular to a portable soil pollution detection tool box. Background Art

[0002] The soil pollution detection toolbox is a toolbox that integrates a variety of soil detection instruments. It is mainly used for soil quality detection and evaluation. It contains instruments for detecting soil pH, nitrogen, phosphorus and potassium content, temperature and humidity, conductivity, fertility, heavy metals and other indicators.

[0003] However, the existing soil pollution detection toolbox has certain disadvantages when in use. The body of the toolbox is too large, making it inconvenient to carry. The soil pollution detection toolbox needs to be unlocked to be opened and closed. It does not have a shock-absorbing buffer structure and a push-pull structure. Fragile tools are easily broken by impact. The test tube has a single function. Other tools need to be used in conjunction with soil testing, which increases the carrying weight. In addition, the soil pollution detection toolbox is generally hand-held and dragged, and cannot be worn directly on the body. Summary of the invention

[0004] The main purpose of the present invention is to provide a portable soil pollution detection tool box, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A portable soil pollution detection tool box comprises a tool storage box, wherein a detection test tube is arranged inside the tool storage box, a C-shaped clip is clamped on the upper end of the tool storage box, and long belts are fixedly connected to the positions at both ends of the outer side of the C-shaped clip, the tool storage box comprises a hole box, a limit pile, a hollow bar, an elastic cover, a card slot, a sponge pad, a guide rail through hole, a pulling slider and a rubber pad, and the detection test tube comprises a soil tube, a mashing tube, a filter tube, a mixing tube, a detection agent tube 1, a detection agent tube 2, a detection agent tube 3, a rubber plug 1, a short plug rod, a connecting belt, a rubber plug 2, a sleeve, a mashing rod, a mashing pressure head, a mashing base, an inner liner tube, a rubber ring, a pipe plug, a filter screen disc, a rubber ring, an auxiliary mixing ball and a colorimetric paper sleeve.

[0006] Preferably, the limit pile is fixedly installed on the side of the hole box near the upper end, and the end of the limit pile away from the hole box is inserted into the through hole at the lower end of the C-shaped clamp. There are seven through holes on the upper surface of the hole box, and the through holes on the upper surface of the hole box are evenly distributed.

[0007] Preferably, the hollow bar is fixedly installed at the edge of the upper end of the hole box, the elastic cover is arranged inside the hollow bar, the card slot is opened on the front surface of the hole box near the upper end, the number of hollow bars installed is seven, and the hollow bars are evenly distributed at the edge of the upper end of the hole box, and the front end of the elastic cover is stuck in the inside of the card slot.

[0008] Preferably, the sponge pad is fixedly installed on the inner side of the through hole on the upper surface of the hole box, the guide rail through hole is opened at the position corresponding to the through hole on the front and rear surfaces of the hole box, the two ends of the pulling slider are clamped inside the guide rail through hole, the rubber pad is fixedly installed on the upper surface of the pulling slider, and a groove is opened on the upper surface of the rubber pad.

[0009] Preferably, the soil tube, the crushing tube, the filtering tube, the mixing tube, the detection agent tube one, the detection agent tube two and the detection agent tube three are all arranged in the through hole of the hole box.

[0010] Preferably, the rubber plug one is inserted into the soil pipe, the mixing tube, the detector tube one, the detector tube two and the detector tube three at the upper end, the short plug rod is arranged inside the rubber plug one, the connecting belt is fixedly connected between the upper end of the short plug rod and the upper surface of the rubber plug one, and the rubber plug one is provided with annular grooves inside and outside.

[0011] Preferably, the second rubber plug is inserted into the upper end of the inner part of the mashing tube, the sleeve is fixedly installed inside the second rubber plug, the mashing rod is arranged inside the sleeve, the mashing pressure head is fixedly installed at the lower end of the mashing rod, and the mashing base is fixedly installed at the lower end of the inner part of the mashing tube, an annular groove is provided on the outer side of the second rubber plug, a spherical head is fixedly installed on the upper end of the mashing rod, and hemispherical abrasive particles are fixed on the lower surface of the mashing pressure head and the upper surface of the mashing base.

[0012] Preferably, the liner tube is arranged inside the filter tube at the upper end, the rubber ring is fixedly installed on the upper end of the liner tube, the pipe plug is arranged inside the rubber ring, the filter screen disc is arranged inside the liner tube, and the rubber ring is fixedly installed on the outside of the filter screen disc.

[0013] Preferably, the auxiliary mixing ball is arranged inside the mixing tube at the lower end, and the colorimetric paper sleeve is arranged on the outside of the mixing tube.

[0014] Preferably, there are three filter discs, and there are three colorimetric paper sleeves. The filter discs have different mesh sizes, and the colors and shades of the outer sides of the colorimetric paper sleeves are different.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The tool storage box is set up, and the overall structure of the tool storage box is more compact, making the soil pollution detection tool box more convenient to carry. It can be used as a test tube rack, and the tool storage box is easier to open and close. It has a shock-absorbing and buffering structure to prevent the test tube from being accidentally broken. The push-pull structure makes it easier to take out the test tube. The detection test tube is lighter than other detection tools and is easier to carry, so that the soil pollution detection tool box has the functions of storing soil, crushing soil, filtering soil and mixing soil for detection, making the detection process more refined and the detection effect better; The tool storage box, C-shaped clip and long strap are set up. Through the C-shaped clip and the long strap in conjunction with the tool storage box, the soil pollution detection tool box can be hung directly on the body, making it easier to remove and re-clamp the tool box and more convenient to wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a portable soil pollution detection tool box of the present invention; Figure 2 A schematic diagram of the structure of a portable soil pollution detection tool box of the present invention; Figure 3 This is a schematic diagram of the test tube structure of a portable soil pollution detection tool box of the present invention; Figure 4 This is a schematic diagram of the interior of a crushing tube of a portable soil pollution detection tool box of the present invention; Figure 5 This is a schematic diagram of the interior of a filter tube of a portable soil pollution detection tool box of the present invention; Figure 6 This is a schematic diagram of the interior of a mixing tube of a portable soil pollution detection tool box of the present invention; Figure 7 A schematic diagram of a rubber plug head, a short plug rod and a connecting belt of a portable soil pollution detection tool box of the present invention; Figure 8 This is a schematic diagram of the C-shaped clip and long belt structure of a portable soil pollution detection tool box of the present invention; Fig. 9 A portable soil pollution detection tool box of the present invention Figure 2 The enlarged schematic diagram of part A in the middle; Fig.10 A portable soil pollution detection tool box of the present invention Figure 4 Enlarged schematic diagram of part B in the middle.

[0017] In the figure: 1. Tool storage box; 101. Hole box; 102. Limit pile; 103. Hollow bar; 104. Elastic cover; 105. Card slot; 106. Sponge pad; 107. Guide rail through hole; 108. Pull slider; 109. Rubber pad; 2. Test tube; 201. Soil tube; 202. Mashing tube; 203. Filter tube; 204. Mixing tube; 205. Test agent tube 1; 206. Test agent tube 2; 207 , detection agent tube three; 208, rubber plug one; 209, short plug rod; 210, connecting belt; 211, rubber plug two; 212, sleeve; 213, crushing rod; 214, crushing pressure head; 215, crushing base; 216, liner tube; 217, rubber ring; 218, pipe plug; 219, filter screen disc; 220, rubber ring; 221, auxiliary mixing ball; 222, colorimetric paper cover; 3, C-shaped clip; 4, long belt. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] like Figure 1 - Fig. 9 As shown, a portable soil pollution detection tool box includes a tool storage box 1, a detection test tube 2 is arranged inside the tool storage box 1, a C-shaped clip 3 is clamped on the upper end of the tool storage box 1, and a long belt 4 is fixedly connected to the positions at both ends of the outer side of the C-shaped clip 3. The tool storage box 1 includes a hole box 101, a limit pile 102, a hollow bar 103, an elastic cover 104, a card slot 105, a sponge pad 106, a guide rail through hole 107, a pull slider 108 and a rubber pad 109. The detection test tube 2 includes a soil tube 2 01, crushing tube 202, filter tube 203, mixing tube 204, detection agent tube 1 205, detection agent tube 2 206, detection agent tube 3 207, rubber plug 1 208, short plug rod 209, connecting belt 210, rubber plug 2 211, sleeve 212, crushing rod 213, crushing pressure head 214, crushing base 215, liner tube 216, rubber ring 217, tube plug 218, filter screen disc 219, rubber ring 220, auxiliary mixing ball 221 and colorimetric paper sleeve 222; A portable soil pollution detection tool box mainly includes a detection tool box storage system, a detection tool box detection system and a detection tool box wearing system, and the process of the system in actual use is as follows: first, remove the tool storage box 1 in the C-shaped clip 3; then, open the detection test tube 2 in the tool storage box 1; then, add detection reagents and detection soil into the detection test tube 2; finally, the soil can be stored, crushed, filtered and mixed for detection through the detection test tube 2.

[0020] like Figure 2 and Fig. 9 As shown, in this embodiment, in order to make the overall structure of the tool storage box more compact, the soil pollution detection tool box is more convenient to carry, and the tool storage box is easier to open and close, and can be used as a test tube rack. It has a shock-absorbing and buffering structure to prevent the test tube 2 from being accidentally broken. The push-pull structure makes it easier to take out the test tube 2. The limit pile 102 is fixedly installed on the side of the hole box 101 near the upper end, and the end of the limit pile 102 away from the hole box 101 is inserted into the through hole at the lower end of the C-shaped clip 3. There are seven through holes on the upper surface of the hole box 101, and the through holes on the upper surface of the hole box 101 are evenly distributed; the hollow bar 103 is fixedly installed at the upper end of the hole box 101 The elastic cover 104 is arranged on the inner side of the hollow strip 103, the card slot 105 is arranged on the front surface of the hole box 101 near the upper end, and there are seven hollow strips 103 installed. The hollow strips 103 are evenly distributed on the upper end of the hole box 101 at the edge, and the front end of the elastic cover 104 is inserted into the inner side of the card slot 105; the sponge pad 106 is fixedly installed on the inner side of the through hole on the upper surface of the hole box 101, the guide rail through hole 107 is arranged on the front and rear surfaces of the hole box 101 at the position corresponding to the through hole, the two ends of the pull slider 108 are arranged inside the guide rail through hole 107, the rubber pad 109 is fixedly installed on the upper surface of the pull slider 108, and the upper surface of the rubber pad 109 is provided with a groove; The specific operation is as follows: in the tool storage box 1, the hole box 101 is more compact. When taking out the test tube 2, bend the elastic cover 104 upward so that the elastic cover 104 rotates in the hollow bar 103, and the front end of the elastic cover 104 exits the interior of the card slot 105, and pushes and pulls upward along the guide rail through hole 107, and the top of the card slot 105, the test tube 2 can be taken out. When the test tube 2 is not taken out, the tool storage box 1 can be used as a test tube rack, wherein the sponge pad 106 and the rubber pad 109 play a role of shock absorption and buffering. When storing the test tube 2, the test tube 2 is inserted into the hole of the hole box 101, and the slider 108 is pressed down until the slider 108 slides to the bottom of the guide rail through hole 107, and the elastic cover 104 is re-covered to allow the front end of the elastic cover 104 to be stuck into the interior of the card slot 105.

[0021] like Figure 3 - Fig.10As shown, in this embodiment, in order to make the test tube 2 lighter than other detection tools and easier to carry, the soil pollution detection tool box has the functions of storing soil, crushing soil, filtering soil and mixing detection soil, so that the detection process is more refined and the detection effect is better. The soil tube 201, the crushing tube 202, the filtering tube 203, the mixing tube 204, the detection agent tube 1 205, the detection agent tube 206 and the detection agent tube 3 207 are all arranged in the through hole of the hole box 101; the rubber plug 1 208 is inserted into The soil pipe 201, the mixing pipe 204, the detection agent pipe 1 205, the detection agent pipe 206 and the detection agent pipe 3 207 are located at the upper end. The short plug rod 209 is arranged inside the rubber plug head 1 208. The connecting belt 210 is fixedly connected between the upper end of the short plug rod 209 and the upper surface of the rubber plug head 1 208. The rubber plug head 1 208 has an annular groove inside and outside. The rubber plug head 211 is inserted into the upper end of the crushing pipe 202. The sleeve 212 is fixedly installed inside the rubber plug head 211. The crushing rod 213 is arranged inside the sleeve 212, the crushing head 214 is fixedly installed at the lower end of the crushing rod 213, the crushing base 215 is fixedly installed at the lower end of the crushing tube 202, an annular groove is provided on the outer side of the rubber plug head 211, a spherical head is fixedly installed at the upper end of the crushing rod 213, and hemispherical grinding particles are fixed on the lower surface of the crushing head 214 and the upper surface of the crushing base 215; the inner liner 216 is arranged inside the filter tube 203 at the upper end, and the rubber ring 217 is fixedly installed at the inner liner 216. At the upper end, the pipe plug 218 is arranged inside the rubber ring 217, the filter disc 219 is arranged inside the inner liner tube 216, and the rubber ring 220 is fixedly installed on the outside of the filter disc 219; the auxiliary mixing ball 221 is arranged inside the mixing tube 204 at the lower end, and the colorimetric paper sleeve 222 is sleeved on the outside of the mixing tube 204; there are three filter discs 219, and there are three colorimetric paper sleeves 222. The mesh numbers of the filter discs 219 are different, and the colors and depths of the outside of the colorimetric paper sleeves 222 are different; The specific operation is as follows: when storing the detection reagent and the detection soil in the detection test tube 2, pull out the rubber plug 1 208 from the soil tube 201, the detection agent tube 1 205, the detection agent tube 2 206 and the detection agent tube 3 207, and load different detection reagents into the detection agent tube 1 205, the detection agent tube 2 206 and the detection agent tube 3 207, and load the detection soil into the soil tube 201, and then re-insert the rubber plug 1 208 into the soil tube 201, the detection agent tube 1 205, the detection agent tube 2 206 and the detection agent tube 3 207; when crushing the soil, pull out the rubber plug 211 in the crushing tube 202, pour an appropriate amount of soil in the soil tube 201 into the crushing tube 202, and re- The second rubber plug 211 is inserted into the inside of the crushing tube 202, and then moves up and down and rotates downward to press the crushing rod 213. The crushing pressure head 214 continuously crushes the soil on the crushing base 215 to crush the soil particles, which is beneficial to the subsequent soil mixing. The sleeve 212 makes the crushing rod 213 move more smoothly. The grooves on the rubber plug 1 208 and the rubber plug 211 increase the friction and improve the sealing effect. When the rubber plug 1 208 is inserted, the short plug 209 in the rubber plug 1 208 can be pulled out through the connecting belt 210. In this way, when the rubber plug 1 208 is inserted, excess air can be discharged to reduce the difficulty of insertion. Afterwards, the short plug 209 is reinserted into the rubber plug 1 208 When filtering soil, pull out the rubber plug 211 from the crushing tube 202, pull out the pipe plug 218 from the rubber ring 217, and take out the filter disc 219 of the liner tube 216 without mesh size. The rubber ring 220 plays the role of anti-slip and sealing the gap between the filter disc 219 and the rubber ring 220. Pour the soil in the crushing tube 202 into the inner liner tube 216 of the filter tube 203, and re-insert the pipe plug 218 into the rubber ring 217. Shake the filter tube 203 up and down, and the filtered soil is located at the bottom of the filter tube 203. When mixing and testing the soil, pull up the pipe plug 218, and pull it out of the filter tube 203 together with the rubber ring 217, and pull out the mixing tube 2 04, pour the soil in the filter tube 203 into the mixing tube 204, pull out the rubber plug 208 in the detection agent tube 1 205, the detection agent tube 206 and the detection agent tube 3 207, pour the required detection reagents in the detection agent tube 1 205, the detection agent tube 206 and the detection agent tube 3 207 into the mixing tube 204, then reinsert the rubber plug 208 into the mixing tube 204 and shake it to allow the soil and the detection reagent to react repeatedly, and assist the mixing ball 221 to improve the mixing effect and speed. After the mixing tube 204 has settled for a period of time, pull down the required colorimetric paper sleeve 222 to the position of the comparison color, find a close color, and get the test result.

[0022] like Figure 1As shown, in this embodiment, the soil pollution detection tool box can be directly hung on the body through the C-shaped clip 3 and the long belt 4, which are matched with the tool storage box, making it easier to take off and re-clamp on the body, and more convenient to wear. The upper end of the tool storage box 1 is clamped with a C-shaped clip 3, and the long belt 4 is fixedly connected to the outer side of the C-shaped clip 3 at both ends, and the end of the limit pile 102 away from the hole box 101 is clamped into the through hole at the lower end of the C-shaped clip 3; The specific operation is as follows: the long strap 4 can be hung directly on the shoulder. When the tool storage box 1 needs to be removed, the long strap 4 does not need to be removed. Just pull the tool storage box 1 downward until the limit pile 102 exits the through hole at the lower end of the C-shaped clamp 3. When reinstalling the tool box 1, press the upper end of the tool box 1 into the C-shaped clamp 3 to allow the rubber pad 109 to be re-engaged in the through hole at the lower end of the C-shaped clamp 3.

[0023] The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, various improvements may be made to the present invention and parts thereof may be replaced by equivalents, or some technical features thereof may be replaced by equivalents without departing from the scope of the present invention. All that is within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable soil pollution detection toolbox, Features: The tool storage box (1) comprises a tool storage box (1), wherein a detection test tube (2) is arranged inside the tool storage box (1), a C-shaped clip (3) is clamped on the upper end of the tool storage box (1), and long belts (4) are fixedly connected to the positions at both ends of the outer side of the C-shaped clip (3), the tool storage box (1) comprises a hole box (101), a limit pile (102), a hollow bar (103), an elastic cover (104), a card slot (105), a sponge pad (106), a guide rail through hole (107), a pulling slide block (108) and a rubber pad (109), and the detection test tube (2) comprises a soil tube (201), a crushing tube (202), filter tube (203), mixing tube (204), detection agent tube one (205), detection agent tube two (206), detection agent tube three (207), rubber plug head one (208), short plug rod (209), connecting belt (210), rubber plug head two (211), sleeve (212), crushing rod (213), crushing pressure head (214), crushing base (215), liner tube (216), rubber ring (217), tube plug head (218), filter screen disc (219), rubber ring (220), auxiliary mixing ball (221) and colorimetric paper sleeve (222).

2. A portable soil pollution detection toolbox according to claim 1, Features: The limiting pile (102) is fixedly mounted on a side surface of the hole box (101) near the upper end, and one end of the limiting pile (102) away from the hole box (101) is inserted into a through hole at the lower end of the C-shaped clip (3). The upper surface of the hole box (101) is provided with seven through holes, and the through holes on the upper surface of the hole box (101) are evenly distributed.

3. A portable soil pollution detection toolbox according to claim 2, Features: The hollow bar (103) is fixedly installed at a position on the edge of the upper end of the hole box (101), the elastic cover (104) is arranged inside the hollow bar (103), the card slot (105) is opened at a position close to the upper end of the front surface of the hole box (101), the number of installed hollow bars (103) is seven, the hollow bars (103) are evenly distributed at a position on the edge of the upper end of the hole box (101), and the front end of the elastic cover (104) is inserted into the inside of the card slot (105).

4. A portable soil pollution detection toolbox according to claim 3, Features: The sponge pad strip (106) is fixedly mounted on the inner side of the through hole on the upper surface of the hole box (101); the guide rail through hole (107) is opened at the position of the through hole corresponding to the front and rear surfaces of the hole box (101); the two ends of the pulling slider (108) are clamped inside the guide rail through hole (107); the rubber pad (109) is fixedly mounted on the upper surface of the pulling slider (108); and a groove is opened on the upper surface of the rubber pad (109).

5. A portable soil pollution detection toolbox according to claim 4, Features: The soil tube (201), the crushing tube (202), the filtering tube (203), the mixing tube (204), the first detection agent tube (205), the second detection agent tube (206) and the third detection agent tube (207) are all arranged in the through hole of the hole box (101).

6. A portable soil pollution detection toolbox according to claim 5, Features: The rubber plug head 1 (208) is inserted into the soil tube (201), the mixing tube (204), the detection agent tube 1 (205), the detection agent tube 2 (206) and the detection agent tube 3 (207) at the upper end, the short plug rod (209) is arranged inside the rubber plug head 1 (208), the connecting belt (210) is fixedly connected between the upper end of the short plug rod (209) and the upper surface of the rubber plug head 1 (208), and the rubber plug head 1 (208) is provided with annular grooves inside and outside.

7. A portable soil pollution detection toolbox according to claim 6, Features: The second rubber plug (211) is inserted into the upper end of the pounding tube (202), the sleeve (212) is fixedly mounted inside the second rubber plug (211), the pounding rod (213) is arranged inside the sleeve (212), the pounding pressure head (214) is fixedly mounted on the lower end of the pounding rod (213), the pounding base (215) is fixedly mounted inside the pounding tube (202) at the lower end, an annular groove is provided on the outer side of the second rubber plug (211), a spherical head is fixedly mounted on the upper end of the pounding rod (213), and hemispherical abrasive particles are fixed on the lower surface of the pounding pressure head (214) and the upper surface of the pounding base (215).

8. A portable soil pollution detection toolbox according to claim 7, Features: The inner lining tube (216) is arranged inside the filter tube (203) at the upper end, the rubber ring (217) is fixedly installed on the upper end of the inner lining tube (216), the pipe plug (218) is arranged inside the rubber ring (217), the filter screen disc (219) is arranged inside the inner lining tube (216), and the rubber ring (220) is fixedly installed on the outside of the filter screen disc (219).

9. A portable soil pollution detection toolbox according to claim 8, Features: The auxiliary mixing ball (221) is arranged inside the mixing tube (204) at a lower end, and the colorimetric paper sleeve (222) is sleeved on the outside of the mixing tube (204).

10. A portable soil pollution detection toolbox according to claim 9, Features: The number of the filter screen discs (219) is three, the number of the colorimetric paper sleeves (222) is three, the mesh sizes of the filter screen discs (219) are different, and the colors and depths of the outer sides of the colorimetric paper sleeves (222) are different.

Citation Information

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