CN212492992U - Centrifuge tube with supernatant collecting device - Google Patents
Centrifuge tube with supernatant collecting device Download PDFInfo
- Publication number
- CN212492992U CN212492992U CN202020925345.9U CN202020925345U CN212492992U CN 212492992 U CN212492992 U CN 212492992U CN 202020925345 U CN202020925345 U CN 202020925345U CN 212492992 U CN212492992 U CN 212492992U
- Authority
- CN
- China
- Prior art keywords
- tube
- push rod
- supernatant
- wall
- centrifugal tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Centrifugal Separators (AREA)
Abstract
A centrifugal tube with a supernatant collecting device comprises a centrifugal tube and the supernatant collecting device, and is characterized in that the centrifugal tube is a cylindrical tube body, one end of the centrifugal tube is closed, a liquid outlet is formed in the upper tube wall of the other end of the centrifugal tube, the supernatant collecting device is a cylindrical push rod matched with the diameter of the centrifugal tube, a groove is formed in one side of the outer wall of the cylindrical push rod, the groove extends to the upper portion of a cylinder from the bottom of the groove, the push rod is nested in the centrifugal tube, and the outer wall of the push rod is in sealing movable fit with the inner wall of the centrifugal tube. The utility model has the advantages that can reduce the personal error of supernatant collection in-process, improve the repeatability and the accuracy of experimental result, its simple structure, convenient to use, low cost avoids the disturbance to the sample after the centrifugation, collects the capacity of supernatant as required to can be directly sealed the save in the centrifuging tube to the sample, collect the supernatant of layering after the centrifugation in being fit for the laboratory.
Description
Technical Field
The utility model relates to a test instrument equipment, in particular to take centrifuging tube of supernatant collection device.
Background
At present, in many chemical analysis tests, pretreatment of a sample is often required. The method is a common pretreatment method, wherein the extracting solution is added into a sample, fully mixed and then centrifuged, so that the sample solution is layered. The supernatant needs to be collected, and sometimes the same sample needs to be extracted for multiple times, and the supernatant needs to be collected for multiple times. The common method for collecting the supernatant is to directly suck the supernatant by using a dropper or a pipette. If the suction head is inserted too deeply, the lower-layer substances can be sucked, and the experimental result is influenced; if the insertion is too shallow, the liquid suction amount is insufficient, and repeated suction is needed; improper handling can also result in mixing of the upper and lower layers, requiring re-centrifugation. At present, the actual operation process needs to depend on the experience and proficiency of an operator, and a method capable of effectively controlling the artificial error is lacked.
Disclosure of Invention
The utility model aims at providing a take supernatant collection device's centrifuging tube to the defect that exists among the prior art. Centrifuging tube, supernatant collection device, its characterized in that the centrifuging tube is cylindrical body, and one end is sealed, is equipped with a liquid outlet on the upper portion pipe wall of the other end, supernatant collection device be one with the ejector pin of centrifuging tube diameter complex cylinder, the outer wall one side of the cylinder of this ejector pin is equipped with a recess, the recess extends to upper portion from the bottom of ejector pin, the ejector pin nestification is in the centrifuging tube, the ejector pin outer wall is sealed movable fit with the inside pipe wall of centrifuging tube.
The diameter of centrifuging tube is at 15 ~ 18mm, and length is at 100 ~ 120mm, and the liquid outlet is located apart from centrifuging tube oral area 30 ~ 50mm department, and the internal diameter of liquid outlet is 2 ~ 4 mm.
The outer diameter of the push rod is matched with the inner diameter of the centrifugal tube, the length of the push rod is 120-150 mm, the length of a groove on one side of the outer wall of the push rod is 60-80 mm, and the cross section of the groove is semicircular.
The centrifugal tube is transparent or semitransparent and is made of glass or plastic, the push rod is made of glass or plastic, and the surface of the inner wall of the centrifugal tube and the surface of the outer wall of the push rod are frosted.
The utility model has the advantages that can reduce the personal error of supernatant collection in-process, improve the repeatability and the accuracy of experimental result, its simple structure, convenient to use, low cost avoids the disturbance to the sample after the centrifugation, collects the capacity of supernatant as required to can be directly sealed the save in the centrifuging tube to the sample, collect the supernatant of layering after the centrifugation in being fit for the laboratory.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic view of the top-view cross-sectional structure of the present invention.
In the figure: 1 liquid outlet, 2 centrifuging tubes, 3 grooves, 4 push rods.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 and 2, the centrifugal tube 2 is transparent or translucent and made of glass or plastic, and the centrifugal tube 2 of this embodiment is made of transparent glass and is a cylindrical tube body, similar to a test tube. The inner wall surface of centrifuging tube 2 is dull polish form, and the body one end of centrifuging tube 2 is sealed, is equipped with a liquid outlet 1 on the upper portion pipe wall of the other end. The diameter of centrifuging tube 2 is at 15 ~ 18mm, and length is at 100 ~ 120mm, and the liquid outlet is located apart from centrifuging tube oral area 30 ~ 50mm department, and the internal diameter of liquid outlet is 2 ~ 4 mm. The diameter of this embodiment centrifuging tube is 16mm, and length is 110mm, and liquid outlet 1 is located apart from centrifuging tube mouth portion 45mm department, and the internal diameter of liquid outlet is 3 mm. The supernatant collecting device is a push rod 4, the push rod 4 is made of glass or plastic, the push rod 4 of the embodiment is a cylinder which is made of glass and matched with the diameter of the centrifuge tube 2, the outer diameter of the push rod 4 is matched with the inner diameter of the centrifuge tube 4, the length is 120-150 mm, the length of the push rod 4 of the embodiment is 130mm, and the embodiment is 70 mm. One side of the outer wall of the push rod 4 is provided with a groove 3, the cross section of the groove 3 is semicircular, the length of the groove 3 is 60-80 mm, and the length of the embodiment is 70 mm. The inner wall surface of the centrifuge tube 2 and the outer wall surface of the push rod 4 are both frosted and are in close contact. The push rod is nested in the centrifugal tube, and the outer wall of the push rod is in sealing movable fit with the inner wall of the centrifugal tube.
When in use, the method comprises the following steps:
a suspension to be centrifuged is filled in a centrifugal tube 2 provided with a liquid outlet 1 on the upper tube wall, and the liquid level of the suspension is lower than the liquid outlet 1. The suspension in the centrifuge tube 2 was centrifuged. After the centrifugation is accomplished, push away centrifuging tube 2 with a cylinder push rod 4 with centrifuging tube diameter complex, the outer wall one side of the cylinder on this push rod 4 is equipped with a recess 3, aim at liquid outlet 1 and with push rod 4 push away centrifuging tube 2 in with recess 3 on the push rod 4. And continuously pushing the push rod 4, enabling the supernatant to ascend along the groove 3 of the push rod 4 along with the continuous pressing of the push rod 4 and flow out through the liquid outlet 1 of the centrifuge tube 2, continuously pushing the push rod 4, observing the change of an interface when the bottom of the push rod 4 is close to the interface of upper and lower layers, and controlling the insertion degree of the push rod until the required supernatant sampling is finished and the pushing is stopped. Rotatory push rod 4, recess 3 on the push rod 4 staggers with the liquid outlet 1 of centrifuging tube 2, because the bottom parallel and level of liquid level and push rod 4, push rod 4 can be sealed in centrifuging tube 2 with the liquid level top in centrifuging tube 2, and the sample after centrifugal separation is sealed in centrifuging tube 2 by centrifuging tube 2 and push rod 4 with surplus liquid promptly, reaches the effect that directly seals up the save to the sample. If the liquid needs to be centrifuged again or the residual liquid needs to be taken out, the push rod can be pulled out.
Claims (4)
1. A centrifugal tube with a supernatant collecting device comprises a centrifugal tube and the supernatant collecting device, and is characterized in that the centrifugal tube is a cylindrical tube body, one end of the centrifugal tube is closed, a liquid outlet is formed in the upper tube wall of the other end of the centrifugal tube, the supernatant collecting device is a cylindrical push rod matched with the diameter of the centrifugal tube, a groove is formed in one side of the outer wall of the cylindrical push rod, the groove extends to the upper portion from the bottom of the push rod, the push rod is nested in the centrifugal tube, and the outer wall of the push rod is in sealing movable fit with the inner wall of the centrifugal tube.
2. The centrifuge tube with the supernatant collecting device according to claim 1, wherein the centrifuge tube has a diameter of 15-18 mm and a length of 100-120 mm, the liquid outlet is located 30-50 mm away from the mouth of the centrifuge tube, and the inner diameter of the liquid outlet is 2-4 mm.
3. The centrifuge tube with the supernatant collecting device of claim 1, wherein the outer diameter of the push rod is matched with the inner diameter of the centrifuge tube, the length of the push rod is 120-150 mm, the length of the groove on one side of the outer wall of the push rod is 60-80 mm, and the cross section of the groove is semicircular.
4. The centrifuge tube with a supernatant collecting device according to claim 1, wherein the centrifuge tube is transparent glass or translucent, and the inner wall surface of the centrifuge tube and the outer wall surface of the push rod are frosted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020925345.9U CN212492992U (en) | 2020-05-27 | 2020-05-27 | Centrifuge tube with supernatant collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020925345.9U CN212492992U (en) | 2020-05-27 | 2020-05-27 | Centrifuge tube with supernatant collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212492992U true CN212492992U (en) | 2021-02-09 |
Family
ID=74390594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020925345.9U Active CN212492992U (en) | 2020-05-27 | 2020-05-27 | Centrifuge tube with supernatant collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212492992U (en) |
-
2020
- 2020-05-27 CN CN202020925345.9U patent/CN212492992U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6755802B2 (en) | Whole blood sampling device | |
| US20090100915A1 (en) | Method of Sampling Specimen, Test Method and Dropping Pipette and Specimen Sampler to be Used Therein | |
| CA1075992A (en) | Vented liquid collection device | |
| JP4412029B2 (en) | Microbial extraction method by density gradient centrifugation | |
| CN202229942U (en) | Vacuum oil collecting device of transformer | |
| CN212492992U (en) | Centrifuge tube with supernatant collecting device | |
| CN102634448A (en) | Biological sampling swab | |
| KR101553041B1 (en) | Spuit | |
| CN206577780U (en) | A kind of portable micro sampling dilution Dropping feeder | |
| CN113731520A (en) | Centrifuge tube with supernatant collecting device and using method thereof | |
| CN210834362U (en) | Gas sampler | |
| CN207408157U (en) | A kind of micro liquid sampler | |
| CN206248379U (en) | Portable micro sampling dilution Dropping feeder | |
| CN211978408U (en) | Suction head for pipettor | |
| CN210965180U (en) | Centrifuge tube for manufacturing cell wax block | |
| CN112315469A (en) | Automatic blood sampling device and automatic blood sampling method | |
| Columbus et al. | The integrated blood-collection system as a vehicle into complete clinical laboratory automation | |
| CN207923525U (en) | Medical test sampler | |
| CN110974256A (en) | Clinical medicine clinical laboratory uses vacuum blood sampling device | |
| CN215878360U (en) | Separator for gradient liquid separation | |
| CN219048513U (en) | Blood collection centrifuging tube | |
| CN217304573U (en) | Supernatant transfer device and sample pretreatment system for detecting plasticizer in edible oil | |
| CN2287463Y (en) | Disposable blood sampling and serum separator | |
| CN216284480U (en) | Telescopic long handle liquid sampling tube | |
| CN218924991U (en) | Centrifugal cup easy to separate blood cells |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |