KR200386580Y1 - Burette and measuring cylinder exclusive use storage - Google Patents

Burette and measuring cylinder exclusive use storage Download PDF

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Publication number
KR200386580Y1
KR200386580Y1 KR20-2005-0008710U KR20050008710U KR200386580Y1 KR 200386580 Y1 KR200386580 Y1 KR 200386580Y1 KR 20050008710 U KR20050008710 U KR 20050008710U KR 200386580 Y1 KR200386580 Y1 KR 200386580Y1
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South Korea
Prior art keywords
burette
mounting plate
measuring cylinder
partition
storage cabinet
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KR20-2005-0008710U
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Korean (ko)
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홍승호
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홍승호
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Publication of KR200386580Y1 publication Critical patent/KR200386580Y1/en

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B81/00Cabinets or racks specially adapted for other particular purposes, e.g. for storing guns or skis
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B96/00Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
    • A47B96/02Shelves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L9/00Supporting devices; Holding devices
    • B01L9/54Supports specially adapted for pipettes and burettes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/02Adapting objects or devices to another
    • B01L2200/025Align devices or objects to ensure defined positions relative to each other

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  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Freezers Or Refrigerated Showcases (AREA)

Abstract

본 고안은 뷰렛과 메스실린더를 단정하게 보관할 수 있는 보관장에 관한 것으로서, 보다 상세하게는 통상의 진열장과 같이 전면이 개방된 직육면체 형상으로 양측에 여닫이식 투명유리문(5)이 형성된 보관장본체(1)와, 상기 보관장본체(1)의 중앙부에 열십자 형상으로 형성된 칸막이(2)와, 상기 진열장본체(1)와 칸막이(2)의 측면에 형성된 가로방향으로 길게 형성된 거치대(9)와, 상기 거치대(9)에 안치되며 다수개의 거치홈(4)이 일정간격으로 형성된 다수개의 거치판(3)으로 구성된 뷰렛 및 메스실린더 전용 보관장인 것이다.The present invention relates to a storage cabinet capable of neatly storing a burette and a measuring cylinder, and more specifically, a storage cabinet body (1) having opening and closing transparent glass doors (5) formed on both sides in a rectangular shape having a front surface open like a conventional showcase. And, the partition (2) formed in a cross shape in the center portion of the cabinet body (1), the shelf (9) formed long in the horizontal direction formed on the side of the showcase body (1) and the partition (2), and the holder Placed in (9) is a plurality of mounting grooves (4) is a burette and a storage cylinder dedicated storage consisting of a plurality of mounting plates (3) formed at regular intervals.

Description

뷰렛 및 메스실린더 전용 보관장{Burette and measuring cylinder exclusive use storage}Burette and measuring cylinder exclusive use storage

본 고안은 뷰렛과 메스실린더를 단정하게 보관할 수 있는 보관장에 관한 것으로서, 보다 상세하게는 통상의 진열장과 같이 전면이 개방된 직육면체 형상으로 양측에 여닫이식 투명유리문이 형성된 보관장본체와, 상기 보관장본체의 중앙부에 열십자 형상으로 형성된 칸막이와, 상기 진열장본체와 칸막이의 측면에 형성된 가로방향으로 길게 형성된 거치대와, 상기 거치대에 안치되며 다수개의 거치홈이 일정간격으로 형성된 다수개의 거치판으로 구성에 관한 것이다.The present invention relates to a storage cabinet capable of neatly storing a burette and a measuring cylinder, and more particularly, a storage cabinet body having opening and closing transparent glass doors on both sides in a rectangular shape having a front surface open like a normal display case, and the storage cabinet body. The partition is formed in a cross shape in the center, and the shelf formed in the transverse direction formed on the side of the showcase body and the partition, and a plurality of mounting plates placed in the holder and a plurality of mounting grooves formed at regular intervals .

뷰렛은 적정(滴定) 등에 사용되는 액체 또는 기체의 부피를 측정하는 실험기구로서, 보통은 길이 70cm, 지름 1cm 정도의 가느다란 유리관이며, 부피는 25∼50mℓ이다. 아래쪽 끝에 유리로 만든 콕 또는 고무관과 핀치콕(또는 유리구)이 있는 가느다란 유리관이 붙어 있어, 이것을 개폐함으로써 내부의 액체를 조금씩 떨어뜨리도록 되어 있다. 눈금은 0.1mℓ까지 읽을 수 있도록 매겨져 있는데, 떨어뜨리기 전의 눈금과 떨어뜨린 후의 눈금의 차에서 배출된 액체의 부피를 정확히 측정할 수 있다. The burette is an experimental instrument for measuring the volume of a liquid or gas used for titration and the like, and is usually a thin glass tube having a length of about 70 cm and a diameter of about 1 cm, and has a volume of 25 to 50 ml. At the lower end, there is a glass cock or rubber tube and a thin glass tube with pinch cock (or glass ball). The scale is read-out to 0.1 ml and it is possible to accurately measure the volume of liquid discharged from the difference between the scale before dropping and the scale after dropping.

메스실린더는 액체의 부피를 측정하는 실험기구로서, 눈금실린더라고도 한다. 유리로 만든 원통형 용기로서, 안정성을 위해 바닥이 편평하다. 측정시에는 이것을 수직으로 세우고 액체를 부은 다음 액면(液面)의 높이를 원통면에 새긴 눈금으로 읽어 부피를 잰다. 눈금은 원통의 축에 직각 방향으로 새겨져 있으므로, 수평 방향에서 보아 일치시키는 것이 바람직하다(이것을 水平視定 방법이라 한다). 밖으로 배출한 부피는 눈금으로 읽은 부피보다 내벽에 부착된 액체의 양만큼 작아지므로 측정시 주의를 요한다. 주로 이화학실험이나 의약용 등으로 사용되는데, 정밀도가 높은 측정은 할 수 없으며 시약용액의 조제나 시약을 분취(分取)할 때 사용한다.The measuring cylinder is an experimental instrument for measuring the volume of a liquid and is also called a graduated cylinder. Cylindrical container made of glass, with flat bottom for stability. When measuring, place it vertically, pour the liquid, and measure the volume by reading the height of the liquid level with the scale written on the cylindrical surface. Since the scale is engraved in the direction perpendicular to the axis of the cylinder, it is preferable that the scale be matched in the horizontal direction (this is called a water leveling method). Care should be taken when measuring the volume of the discharged volume as it is smaller by the amount of liquid attached to the inner wall than the volume read by the scale. It is mainly used for physicochemical experiments and medicines, but it is not possible to make high-precision measurements. It is used to prepare reagents or to separate reagents.

상기와 같은 실험용 초자기구들은 통상 선반이 구비된 진열장이나 실험대 위에 올려놓아 보관하게 된다. 따라서, 가지런히 보관할 수 없어 미관상 보기 좋지 않을 뿐만 아니라, 특정 기구를 사용하기 위해 선반 위에 놓여진 기구를 꺼낼 시 다른 기구를 건들게 되어 선반에서 떨어져 깨지게 되는 문제가 발생하게 된다.Experimental vitreous devices as described above are usually stored on the shelves or shelf equipped with shelves. Therefore, not only can not be stored neatly look aesthetically, but also when you take out the instruments placed on the shelf to use a particular instrument, the problem is that the other instruments are touched and broken off the shelf.

따라서, 실험용 초자기구들을 안전하고, 보기 좋게 정돈할 수 있는 거치대나 보관장의 필요성이 대두되기 시작했다.Therefore, the need for a cradle or storage cabinet that can safely and neatly arrange experimental vitreous devices is on the rise.

대한민국 특허청 등록실용신안공보 등록번호 제20-0322416호에는 실험실내 싱크대 상부의 선반하부에 세척된 각종 실험실용 초자기구 및 실험도구들을 개구가 하부를 향하도록 거치시켜서 건조할 수 있도록 초자기구의 크기 및 모양에 따라 개별적으로 제작되거나 좌/우로 폭 조절이 가능하여 크기가 다른 실험실용 초자기구에 범용적으로 사용할 수 있도록 구성되는 실험실용 초자기구 및 용기의 건조 및 임시보관을 위한 거치대가 기술되어 있으나,Registered Utility Model Publication No. 20-0322416 of the Korean Intellectual Property Office discloses the size and size of the vitreous instrument to be dried by mounting the laboratory vitreous instruments and laboratory tools washed under the shelf above the sink in the laboratory so that the openings face downward. There is a stand for drying and temporary storage of laboratory vitreous devices and containers configured to be universally used for different sizes of laboratory vitreous devices, which can be made individually according to the shape or the width can be adjusted left / right,

이러한 거치대는 초자기구의 모양(형태)에 따라 거치대를 제작해야 하며, 또한, 메스실린더나 뷰렛 같은 길이가 길고 얇은 기구들을 보관시에는, 기구의 일측끝단부만을 고정되기 때문에 기구가 흔들려 서로 부딪치게 되어, 거치된 기구가 손상되거나 또는 거치대에서 이탈되어 떨어지게 되는 문제점이 있다.Such a cradle should be made of a cradle according to the shape (shape) of the vitreous device. Also, when storing long and thin devices such as a measuring cylinder or a burette, only one end of the device is fixed so that the devices may shake and collide with each other. However, there is a problem that the mounted apparatus is damaged or detached from the cradle.

상기와 같은 문제점을 해결하기 위하여 본 고안은 메스실린더나 뷰렛 같은 길이가 길고 얇은 기구들을 안전하고, 또한 종류별로 가지런히 보관할 수 있는 뷰렛 및 메스실린더 전용 보관장을 제공하는 것이 본 고안이 이루고자 하는 기술적 과제인 것이다.In order to solve the above problems, the present invention provides a safe and a storage cabinet dedicated to the long and thin devices such as a measuring cylinder or burette, which can be stored neatly by type, and a technical problem of the present invention. It is

상기와 같은 목적을 달성하기 위한 본 고안은 통상의 진열장과 같이 전면이 개방된 직육면체 형상으로 양측에 여닫이식 투명유리문(5)이 형성된 보관장본체(1)와, 상기 보관장본체(1)의 중앙부에 열십자 형상으로 형성된 칸막이(2)와, 상기 진열장본체(1)와 칸막이(2)의 측면에 형성된 가로방향으로 길게 형성된 거치대(9)와, 상기 거치대(9)에 안치되며 다수개의 거치홈(4)이 일정간격으로 형성된 다수개의 거치판(3)으로 구성된 뷰렛 및 메스실린더 전용 보관장인 것이다.The present invention for achieving the above object is a storage cabinet body (1) formed with a transparent transparent glass door (5) on both sides in the form of a rectangular parallelepiped with the front open like a conventional showcase, and the central portion of the storage cabinet body (1) Partition (2) formed in the shape of a cross, the holder (9) formed long in the horizontal direction formed on the side of the showcase body (1) and the partition (2), and placed in the holder (9) a plurality of mounting grooves ( 4) is a storage container for the burette and the measuring cylinder composed of a plurality of mounting plates (3) formed at regular intervals.

본 고안에서 거치판(3)은 뷰렛(10)이나 메스실린더(11)를 거치 시키는 상부거치판(3a)과, 상기 상부거치판(3a)에 거치된 메스실린더가 흔들리지 않도록 고정시키는 하부거치판(3b)으로 구성되며, 상기 상부거치판(3a)과 하부거치판(3b) 사이의 간격은 뷰렛(10)이나 메스실린더(11)의 길이에 따라 조절되며,In the present invention, the mounting plate 3 has an upper mounting plate 3a for mounting the burette 10 or a measuring cylinder 11 and a lower mounting plate for fixing the measuring cylinder mounted on the upper mounting plate 3a so as not to shake. It consists of (3b), the interval between the upper plate 3a and the lower plate 3b is adjusted according to the length of the burette 10 or the measuring cylinder 11,

상기 상,하부거치판(3a,3b)에 형성된 거치홈(4)은 뷰렛(10)과 메스실린더(11) 등을 거치 시키기에 적당한 폭으로 형성된다. 즉, 뷰렛(10)과 메스실린더(11) 의 크기에 따라서 거치홈(4)의 폭이 조절된다. 예로서, 도1에 도시된 바와 같이, 거치홈(4)의 폭을 다양하게 형성된 거치판(3)을 거치대(9)에 안치시켜 다양한 종류의 실험 기구를 보관할 수 있다.The mounting grooves 4 formed on the upper and lower mounting plates 3a and 3b are formed to have a width suitable for mounting the burette 10 and the measuring cylinder 11 and the like. That is, the width of the mounting groove 4 is adjusted according to the size of the burette 10 and the measuring cylinder (11). For example, as shown in Figure 1, by placing the mounting plate 3 formed in a variety of width of the mounting groove (4) in the holder (9) can be stored a variety of experimental instruments.

또한, 보관장본체(1)의 전면 좌우측에 형성된 여닫이식 투명유리문(5)은 통상의 문과 같이 손잡이(6)와 잠금장치(7,8)가 형성되어 있다.In addition, the opening and closing transparent glass doors 5 formed on the front left and right sides of the storage cabinet body 1 are provided with handles 6 and locking devices 7 and 8 as in a normal door.

이하, 첨부된 도면을 참고하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail.

도1은 본 고안에 따른 보관장 상세도, 도2는 본 고안에 따른 보관장의 거치판 결합 상태도, 도3은 본 고안에 따른 보관장의 거치판 구성 상세도(A:정면도, B:평면도), 도4는 본 고안에 따른 보관장의 뷰렛 및 메스실린더 거치 상태도를 도시한 것이며, 보관장본체(1), 칸막이(2), 거치판(3), 상부거치판(3a), 하부거치판(3b), 거치홈(4), 투명유리문(5), 손잡이(6), 잠금장치(7,8), 거치대(9), 뷰렛(10), 메스실린더(11)를 나타낸다.Figure 1 is a detailed view of the storage cabinet according to the present invention, Figure 2 is a mounting plate coupling state of the storage cabinet according to the present invention, Figure 3 is a detailed configuration of the mounting plate of the storage cabinet according to the present invention (A: front view, B: top view) , Figure 4 is a view showing a burette and a measuring cylinder mounting state of the storage cabinet according to the present invention, the storage cabinet body (1), partition (2), mounting plate (3), upper mounting plate (3a), lower mounting plate (3b) ), Mounting groove (4), transparent glass door (5), handle (6), locking devices (7, 8), holder (9), burette (10), scalpel cylinder (11).

본 고안에 따른 뷰렛 및 메스실린더 전용 보관장의 구조를 살펴보면, 도1 및 도4에 도시된 바와같이, 통상의 진열장과 같이 전면이 개방된 직육면체 형상으로 양측에 여닫이식 투명유리문(5)이 형성된 보관장본체(1)와, 상기 보관장본체(1)의 중앙부에 열십자 형상으로 형성된 칸막이(2)와, 상기 진열장본체(1)와 칸막이(2)의 측면에 형성된 가로방향으로 길게 형성된 거치대(9)와, 상기 거치대(9)에 안치되며 다수개의 거치홈(4)이 일정간격으로 형성된 다수개의 거치판(3)으로 구성되며,Looking at the structure of the storage container for burettes and mass cylinders according to the present invention, as shown in Figures 1 and 4, the storage cabinet formed with a transparent transparent glass door (5) formed on both sides in a rectangular shape with the front open like a conventional showcase. The main body 1, the partition 2 formed in a cross shape in the center part of the storage main body 1, and the cradle 9 formed in the horizontal direction formed in the side of the showcase main body 1 and the partition 2, And, it is placed in the cradle (9) and consists of a plurality of mounting plates (3) formed with a plurality of mounting grooves 4 at regular intervals,

상기 거치판(3)은 도2 및 도3에 도시된 바와 같이, 뷰렛(10)이나 메스실린더(11)를 거치 시키는 상부거치판(3a)과, 상기 상부거치판(3a)에 거치된 메스실린더가 흔들리지 않도록 고정시키는 하부거치판(3b)으로 구성되며, 상기 상부거치판(3a)과 하부거치판(3b) 사이의 간격은 뷰렛(10)이나 메스실린더(11)의 길이에 따라 조절되며,As shown in FIGS. 2 and 3, the mounting plate 3 includes an upper mounting plate 3a for mounting the burette 10 or a measuring cylinder 11 and a scalpel mounted on the upper mounting plate 3a. It consists of a lower mounting plate (3b) for fixing the cylinder is not shaken, the distance between the upper mounting plate (3a) and the lower mounting plate (3b) is adjusted according to the length of the burette (10) or the measuring cylinder (11) ,

상기 거치홈(4)은 다수개의 뷰렛(10)과 메스실린더(11)가 거치될 수 있도록 가로로 길게 형성되어 있으며, 홈의 후방 끝단부는 라운드지게 형성되어 충격을 완화시킬 수 있도록 형성되어 있다.The mounting groove 4 is formed to be horizontally long so that the plurality of burettes 10 and the measuring cylinder 11 can be mounted, the rear end of the groove is formed to be round to reduce the impact.

사용방법을 살펴보면 원하는 폭의 거치홈(4)이 형성된 상,하부거치판(3a,3b)을 선택하여 도3과 같이, 거치대(9)에 안치시킨 다음, 도4와 같이, 뷰렛(10)이나 메스실린더(11)의 개방된 상부가 바닥을 바라도록 뒤집어, 뷰렛(10)과 메스실린더(11) 하부에 돌출된 부분(10a,11a)이 상부거치판(3a)에 걸리도록 하여 삽입하여 거치 시킨다.Looking at the use method, the upper and lower mounting plates (3a, 3b) formed with a mounting groove (4) of the desired width is selected and placed in the holder (9), as shown in Figure 3, as shown in Figure 4, the burette (10) Inverted so that the open upper part of the measuring cylinder 11 faces the bottom, and inserts so that the protruding portions 10a and 11a at the lower portion of the burette 10 and the measuring cylinder 11 are caught by the upper mounting plate 3a. Mount it.

따라서, 뷰렛(10)과 메스실린더(11)의 상하부가 상,하부거치판(3a,3b)에 거치 고정되어 흔들리는 현상 없이 안전하게 보관할 수 있게 된다.Therefore, the upper and lower portions of the burette 10 and the measuring cylinder 11 are fixed to the upper and lower mounting plates 3a and 3b so that they can be safely stored without shaking.

이상에서와 같이 본 고안은 메스실린더나 뷰렛 같은 길이가 길고 얇은 기구들을 거치시 흔들리는 현상에 의해 파손되는 문제없이 안전하게 보관할 수 있으며, 또한 크기와 종류별로 가지런히 보관할 수 있는 효과가 있다.As described above, the present invention can be safely stored without the problem of being damaged by the shaking phenomenon of long and thin devices such as a measuring cylinder or a burette, and also has an effect that can be neatly stored by size and type.

도1은 본 고안에 따른 보관장 상세도1 is a detailed view of the storage according to the present invention

도2는 본 고안에 따른 보관장의 거치판 결합 상태도Figure 2 is a mounting plate coupled state of the storage cabinet according to the present invention

도3는 본 고안에 따른 보관장의 거치판 구성 상세도(A:정면도, B:평면도)Figure 3 is a detailed view of the configuration of the holding plate according to the present invention (A: front view, B: top view)

도4는 본 고안에 따른 보관장의 뷰렛 및 메스실린더 거치 상태도Figure 4 is a burette and a measuring cylinder mounting state of the storage cabinet according to the present invention

<도면의 부호설명><Description of the Drawings>

보관장본체(1), 칸막이(2), 거치판(3), 상부거치판(3a), 하부거치판(3b), 거치홈(4), 투명유리문(5), 손잡이(6), 잠금장치(7,8), 거치대(9), 뷰렛(10), 메스실린더(11)Cabinet body (1), partition (2), mounting plate (3), upper mounting plate (3a), lower mounting plate (3b), mounting groove (4), transparent glass door (5), handle (6), locking device (7,8), holder (9), burette (10), measuring cylinder (11)

Claims (1)

뷰렛 및 메스실린더 전용 보관장에 있어서, 통상의 진열장과 같이 전면이 개방된 직육면체 형상으로 양측에 여닫이식 투명유리문(5)이 형성된 보관장본체(1)와, 상기 보관장본체(1)의 중앙부에 열십자 형상으로 형성된 칸막이(2)와, 상기 진열장본체(1)와 칸막이(2)의 측면에 형성된 가로방향으로 길게 형성된 거치대(9)와, 상기 거치대(9)에 안치되며 다수개의 거치홈(4)이 일정간격으로 형성된 다수개의 거치판(3)으로 구성되며,A storage cabinet exclusively for burettes and measuring cylinders, the storage main body 1 of which is formed in a rectangular parallelepiped shape in which the front surface is opened like a normal showcase, and the opening transparent glass doors 5 are formed on both sides, and a crisscross in the center of the storage main body 1. Partition (2) formed in the shape, the shelf 9 formed in the horizontal direction formed on the side of the showcase body (1) and the partition (2), and a plurality of mounting grooves (4) are placed in the holder (9) Consists of a plurality of mounting plate (3) formed at a predetermined interval, 상기 거치판(3)은 뷰렛(10)이나 메스실린더(11)를 거치 시키는 상부거치판(3a)과, 상기 상부거치판(3a)에 거치된 메스실린더가 흔들리지 않도록 고정시키는 하부거치판(3b)으로 구성되며, 상기 상부거치판(3a)과 하부거치판(3b) 사이의 간격은 뷰렛(10)이나 메스실린더(11)의 길이에 따라 조절가능하며,The mounting plate 3 has an upper mounting plate 3a for mounting the burette 10 or the measuring cylinder 11 and a lower mounting plate 3b for fixing the measuring cylinder mounted on the upper mounting plate 3a so as not to shake. ), The distance between the upper mounting plate (3a) and the lower mounting plate (3b) is adjustable according to the length of the burette (10) or the measuring cylinder (11), 상기 거치판(3)에 형성된 거치홈(4)은 다수개의 뷰렛(10)과 메스실린더(11)가 거치될 수 있도록 가로로 길게 형성되어 있으며, 홈의 후방 끝단부는 라운드지게 형성되어 충격을 완화시킬 수 있도록 형성되어 있음을 특징으로 하는 뷰렛 및 메스실린더 전용 보관장.The mounting groove 4 formed in the mounting plate 3 is formed to be horizontally long so that the plurality of burettes 10 and the measuring cylinder 11 can be mounted, and the rear end of the groove is rounded to alleviate the impact. Burette and measuring cylinder storage cabinet, characterized in that it is configured to be.
KR20-2005-0008710U 2005-03-30 2005-03-30 Burette and measuring cylinder exclusive use storage KR200386580Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418453A (en) * 2013-07-31 2013-12-04 南京佳业检测工程有限公司 Drip tube frame facilitating waste liquor discharge
KR101612316B1 (en) * 2015-01-22 2016-04-29 서은빈 Multi-test tube supporter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418453A (en) * 2013-07-31 2013-12-04 南京佳业检测工程有限公司 Drip tube frame facilitating waste liquor discharge
KR101612316B1 (en) * 2015-01-22 2016-04-29 서은빈 Multi-test tube supporter

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