CN108318316A - A kind of Improvement type zoobenthos filter screen - Google Patents
A kind of Improvement type zoobenthos filter screen Download PDFInfo
- Publication number
- CN108318316A CN108318316A CN201810328843.2A CN201810328843A CN108318316A CN 108318316 A CN108318316 A CN 108318316A CN 201810328843 A CN201810328843 A CN 201810328843A CN 108318316 A CN108318316 A CN 108318316A
- Authority
- CN
- China
- Prior art keywords
- mesh screen
- circle
- zoobenthos
- slide fastener
- string bag
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of Improvement type zoobenthos filter screens, acquisition mesh screen is connected with loop bar, acquisition mesh screen includes that the mesh screen circle at top is connected with funnel mesh screen, funnel mesh screen includes mesh screen body, primary filtration network and the detachable string bag, primary filtration network is arranged in mesh screen body, the detachable string bag is connected by the first slide fastener circle, the second slide fastener circle with mesh screen body respectively, first slide fastener circle is arranged in mesh screen body bottom, second slide fastener circle is arranged at the top of the detachable string bag, and loop bar includes rod handle and the rod handle being fixed on mesh screen circle that is threadedly coupled with it.It is simple in structure, it is easy to use, it can quickly eluriate bed mud and accurately and efficiently select, collect zoobenthos, the qualitative, quantitative for realizing zoobenthos under the conditions of different substrates is efficiently collected.
Description
Technical field
The present invention relates to a kind of zoobenthos to eluriate filter device, the various substrate items suitable for freshwater environment investigation
The collection of zoobenthos qualitative, quantitative sample under part, be particularly suitable for canebreak enrich substrate under the conditions of zoobenthos sample adopt
Collection.
Background technology
Zoobenthos is that the history of life, wholly or largely the time was aquatic ecosystem in a kind of aquatic animal of water bottom
The important component of system animal community, has important ecological functions：Accelerate water-bed clast to decompose, adjusts water sludge interface substance
It exchanges, maintains aquatic ecosystem integrality, therefore zoobenthos investigation and sampling analysis has become water environment and aquatic ecosystem
The pith of health assessment.However, in the fact-finding process of zoobenthos, washed in a pan using the existing zoobenthos net of existing market
It washes bed mud and to collect zoobenthos very time-consuming and laborious, can quickly eluriate bed mud there is an urgent need for a kind of and zoobenthos is collected by filtration
Device.
Currently, existing acquisition mesh screen includes mainly two kinds：(1) cylindrical stainless steel mesh screen, by annular sidewall and bottom
Circle composition.It is mainly intake by bottom circular during elutriation and screens mud sample.When eluriating mud sample, it is stainless that operator needs end
Steel mesh sieves, and eluriates heavy workload, inconvenient, inefficiency, and bed mud sample and is easy escape, leads to the loss of zoobenthos,
Influence sampling accuracy.(2) traditional zoobenthos net, by mesh screen circle and Criny screen banks at.The collection device string bag depth is too
Deep, mesh screen circle is so that filter screen is very heavy by highly about 10cm stainless steels, therefore eluriate bed mud process arduously and eluriate
Residue is mixed and disorderly, is unfavorable for zoobenthos and selects and collect.In addition, having device for hard or the profuse bed mud of organic matter
It eluriates, select and collects and be inconvenient.In short, existing acquisition mesh screen is eluriated, is selected, collection process is quite cumbersome and time-consuming expense
Power cannot fully meet the demand of sampler.
Invention content
The present invention on the basis of traditional zoobenthos filter screen in view of the above-mentioned problems of the prior art, carried out larger
Improvement, the purpose of the invention is to provide a kind of Improvement type zoobenthos filter screen device, simple in structure, users
Just, it can quickly eluriate bed mud and accurately and efficiently select, collect zoobenthos, realize zoobenthos under the conditions of different substrates
The quick collection of qualitative, quantitative sample, the sample collection being particularly suitable under the conditions of the abundant substrate of canebreak.
To achieve the above object, the present invention uses following technical measures：
A kind of Improvement type zoobenthos filter screen, including acquisition mesh screen and loop bar, it is characterised in that：Acquire mesh screen and loop bar
It is connected, acquisition mesh screen includes the mesh screen circle and funnel mesh screen at top, and funnel mesh screen includes mesh screen body, primary filtration network and detachable
The string bag, primary filtration network are arranged in mesh screen body, and the detachable string bag passes through the first slide fastener circle, the second slide fastener circle and mesh screen body respectively
Be connected, in mesh screen body bottom, the second slide fastener circle is arranged at the top of the detachable string bag setting of the first slide fastener circle, loop bar include rod handle and
It is threadedly coupled with it on connector for being fixed on mesh screen circle.
The mesh screen circle is the cirque structure of diameter 34-36cm, and material is stainless steel, and silk is wound mesh screen circle
It is connected with mesh screen body.
The primary filter screen distance is that 15-17 mesh (1.00mm) is apart from mesh screen circle vertical range 25-29cm
Nylon material.
The Criny sieve nest is that aperture is 58-62 mesh (0.25mm), and material is nylon.
The acquisition mesh screen is equipped with the primary filtration network of 15-17 mesh, and off-network sieve circle vertical range is 24-
26cm。
The detachable string bag is the semi-circular structure that radius is 4-6cm, is nylon material, the detachable string bag and net
Sieve nest aperture is consistent (58-62 mesh).The top of the detachable string bag is equipped with the second slide fastener circle, and the bottom of mesh screen body is equipped with first and draws
Chain ring, the detachable string bag are connected by the first slide fastener circle, the second slide fastener circle with mesh screen body, the first slide fastener circle and the second slide fastener circle group
At complete zipper, zipper radius 4-6cm.
The mesh screen circle and loop bar are stainless steel, and loop bar is fixed on mesh screen circle, the long 58-62cm of loop bar.
The acquisition mesh screen entirety vertical height is 38-42cm.
Pass through above-mentioned technical measures：It mainly solves following technical problem and difficult point, has mainly reached following technology effect
Fruit：
A, the primary filtration network being equipped in mesh screen body of the present invention, apart from mesh screen circle 25cm, appropriate depth, person easy to operation is clear
Dynamics control is washed, cleaning is laborsaving, is particularly suitable for eluriating bed mud in sampling location.Mesh screen body and primary mesh screen multi-panel collective effect in
Bed mud, cleaning area is big, can obviously accelerate cleaning efficiency.The design of primary mesh screen ideally solves current existing in mesh screen body
The problem of technology.On the one hand overcoming cylindrical stainless steel mesh screen, (mesh screen depth about 10cm, mesh screen wall are stainless steel, only
By mesh screen body bottom-purge bed mud), during elutriation the escape of sample (including bed mud and zoobenthos) and eluriate it is difficult,
Heavy workload eluriates the low problem of efficiency.On the other hand, traditional zoobenthos net is overcome, string bag depth is too deep, and filter screen is heavy
Weight eluriates laborious, slow-footed problem.Test result shows that, compared to traditional zoobenthos net, which is remarkably improved cleaning
Speed (table 1).
B, structure is collected by filtration with what the bottom detachable string bag formed in primary filtration network in mesh screen body, is effectively improved and chooses
Select the efficiency of zoobenthos.Structure (16 mesh of primary filtration network mesh, 60 mesh of detachable string bag mesh) is collected by filtration in the present apparatus,
Can be online in primary filter by macrobenthos (such as spiral shell, shrimp, Corbicula fluminea) cleaning, and it is (such as small-sized for mini-Frac test
Midge), little particle organic matter can filter primary filtration network and enter the detachable string bag (Fig. 4).Device cleaning bed mud is clean, very well
Ground has detached macrobenthos, organic matter and mini-Frac test, to efficiently improve what follow-up zoobenthos selected
Efficiency.By experiments have shown that, compared to traditional zoobenthos net, which significantly improves zoobenthos and selects efficiency (table 1),
Avoid traditional filtering device size zoobenthos, organic matter combine in one bring select difficulty.In addition, bottom detachable net
Pocket is semi-circular structure and can flexibly dismantle, and is not only convenient for quickly collecting zoobenthos but also can avoid mini-Frac test
It omits.
Compared with prior art, the present invention haing the following advantages and effect：
(1) whole device is simple in structure, facilitates making, at low cost.
(2) device is light, easy to carry, and usage time is long.
(3) laborsaving when the device uses, it is fast to select speed, and it is complete to receive sample.
(4) device is used for rinsing, collecting for zoobenthos qualitative, quantitative sample simultaneously, with good practicability and just
Profit.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of Improvement type zoobenthos filter screen device.
Fig. 2 is a kind of mesh screen coil structures schematic diagram of Improvement type zoobenthos filter screen device.
Fig. 3 is a kind of loop bar structure schematic diagram of Improvement type zoobenthos filter screen device.
Fig. 4 is a kind of traditional and improvement zoobenthos filter screen cleans bed mud and intuitively observes comparison schematic diagram.
In figure：1- acquires mesh screen；2- loop bars；3- mud samples；1-1- mesh screen circles；1-2- funnel mesh screens；1-2-1- nets
Sieve nest；1-2-2- primary filtration networks；The 1-2-3- detachable string bags；1-2-3-1- the first slide fastener circles；1-2-3-2- second is drawn
Chain ring；2-1- connectors；2-2- rod handles.
Fig. 4 is a kind of traditional and improvement zoobenthos filter screen cleans bed mud and intuitively observes comparison schematic diagram.
A, traditional zoobenthos net：Most zoobenthos nets is applied for existing market, the net string bag is too deep, and device is more
It is heavy；
B, zoobenthos filter screen is improved：Traditional zoobenthos net is improved, one side primary filtration network and mesh screen
Circle remote is from suitable, and on the other hand construct primary filtration network and bottom detachable string bag composition is collected by filtration structure, to pole
It is significant to improve the efficiency for eluriating and selecting zoobenthos；
C, traditional zoobenthos string bag cleans residue：Using the residue after 1 rake bed mud of traditional zoobenthos net cleaning
Observation is shone；
D, residue is cleaned on primary filter mesh screen：Using 1 rake bed mud of improvement zoobenthos filter screen cleaning, filter to first
Residue observation on grade filtering mesh screen is shone；
E, bottom detachable string bag cleaning residue (being the small-sized midge on surface at yellow arrows)：It dwells using improvement bottom
1 rake bed mud of object filter screen cleaning, filters to the residue in the detachable string bag of bottom to observe and shine.
Specific implementation mode
Embodiment 1：
The invention will be further elucidated with reference to specific embodiments.
As shown in Figure 1, Figure 2 and Fig. 3 is it is found that a kind of Improvement type zoobenthos filter screen, including acquires mesh screen 1 and loop bar 2.It is special
Sign is：Acquisition mesh screen 1 is connected with loop bar 2, and acquisition mesh screen 1 includes the mesh screen circle 1-1 and funnel mesh screen 1-2 at top, Criny
Sieve 1-2 includes mesh screen body 1-2-1, primary filtration network 1-2-2 and detachable string bag 1-2-3, and primary filtration network 1-2-2 is arranged in net
In sieve nest 1-2-1, detachable string bag 1-2-3 passes through the first slide fastener circle 1-2-3-1, the second slide fastener circle 1-2-3-2 and mesh screen respectively
Body 1-2-1) it is connected, the first slide fastener circle 1-2-3-1 settings are arranged in the bottoms mesh screen body 1-2-1, the second slide fastener circle 1-2-3-1 just
Tear 1-2-3 at the top of formula string bag 1-2-3 open, loop bar 2 includes rod handle 2-2 and the company being fixed on mesh screen circle 1-1 being threadedly coupled with it
Connector 2-1.
The mesh screen circle 1-1 is the cirque structure of diameter 35cm, and material is stainless steel, and silk is wound mesh screen circle 1-
1 is connected with mesh screen body 1-2-1.
The mesh screen body 1-2-1 is 60 mesh, and material is nylon.
The acquisition mesh screen 1 is equipped with the primary filtration network 1-2-2 of 16 mesh, and primary filtration network is nylon material, off-network sieve
Circle 1-1 vertical ranges are 25cm.
The detachable string bag 1-2-3 is the semi-circular structure that radius is 5cm, nylon material, detachable string bag 1-2-3
The top of (60 mesh) consistent with the mesh screen apertures body 1-2-1, detachable string bag 1-2-3 is equipped with the second slide fastener circle 1-2-3-2, mesh screen body
The bottom of 1-2-1 is equipped with the first slide fastener circle 1-2-3-1, detachable string bag 1-2-3 and is drawn by the first slide fastener circle 1-2-3-1, second
Chain ring 1-2-3-2 is connected with mesh screen body 1-2-1, and the first slide fastener circle 1-2-3-1 and the second slide fastener circle 1-2-3-2 form complete slide fastener
Structure, zipper radius 5cm.
The 2 long 60cm of loop bar, loop bar 2 are fixed on mesh screen circle 1-1, are stainless steel.
The mesh screen circle 1-1 and loop bar 2 are stainless steel, the long 60cm of loop bar.
The whole vertical height of the acquisition mesh screen 1 is 40cm.
In sampling, mud sample 3 is placed in primary filtration network 1-2-2, primary filtration network 1-2-2 first carries out initial filter.By
After initial filter, macrobenthos, bulky grain organic matter etc. directly take out from primary filtration network 1-2-2.Mesh screen is briefly cleaned again
Body cleans the zoobenthos on mesh screen body wall into the string bag, pulls open the zipper being made of the first, second slide fastener circle, takes
Go out the miniature zoobenthos etc. in the string bag.
Bed mud is eluriated, zoobenthos selects and collect that process is easy to operate, time saving and energy saving, precise and high efficiency.
The invention is not limited in embodiment of above, and the technical staff of the industry is in the premise without prejudice to spirit of that invention
Under, various modifications or additions can be done to described specific example or substituted by a similar method, these are equivalent
Modification or replacement are all contained in range defined in the claims.
Zoobenthos filter screen recruitment evaluation
Using a kind of Improvement type zoobenthos filter screen with traditional zoobenthos net to equivalent bed mud (1/16m2Peter is gloomy to adopt
Mud device 1 is harrowed) (12 rake bed muds, each 6 rake of two kinds of nets are cleaned in this experiment altogether) is cleaned, and zoobenthos in bed mud is chosen
Choosing compares cleaning and the screening efficiency of improvement zoobenthos filter screen and traditional zoobenthos net, to assess the effect of the present invention
Fruit.
Before formal test, to experiment pond carry out preliminary experiment, observe 6 rake bed mud midsoles dwell animal species composition and contain
Amount.Trial test the result shows that, each bed mud midsole animal species of dwelling of harrowing are rare (1-2 kinds midge), and only 1-2 tails.Therefore it is real
The purpose and validity now tested, the shrimp of the close specification of this experiment offer equivalent, spiral shell, midge, water silk earthworm put into each rake examination
It tests in bed mud, observe wash result and records cleaning, selects the time.
Test result shows that, compared to traditional zoobenthos net, improvement zoobenthos filter screen can preferably clean bed mud, and
By macrobenthos (such as shrimps, snail), bulky grain organic matter and mini-Frac test (small-sized chironomus larvas, small earthworm
Deng) (Fig. 4) is efficiently separated, contribute to follow-up zoobenthos to select.
In addition, improvement zoobenthos filter screen cleaning bed mud and selecting the efficiency of zoobenthos and being significantly higher than traditional bottom and dwell
Speed is selected in the cleaning of object net, is cleaned equivalent bed mud and is selected the spent time pole of equivalent zoobenthos and is substantially less than traditional bottom
Animal net of dwelling is taken time (P ＜ 0.001).
The present invention is applied successfully in Ulungur, Xinjiang lake, Kezhi'er Reservoir and Huangshi Daye waters Hu Deng, and effect is good, bright
The aobvious sampling for improving zoobenthos, collection efficiency.
The traditional zoobenthos net of table 1 is compared with the cleaning of improvement zoobenthos net and screening zoobenthos efficiency
Note：The bed mud that tradition is cleaned every time with improvement zoobenthos net in the experiment comes from same sampled point, and clear every time
The amount washed is a rake.Cleaning and screening operation are completed by same experimenter.Experiment bed mud is muskey substrate.
Claims (7)
1. a kind of Improvement type zoobenthos filter screen, including acquisition mesh screen（1）And loop bar（2）, it is characterised in that：Acquire mesh screen
（1）With loop bar（2）It is connected, acquires mesh screen（1）Mesh screen circle including top（1-1）With funnel mesh screen（1-2）It is connected, funnel mesh screen
（1-2）Including mesh screen body（1-2-1）, primary filtration network（1-2-2）And the detachable string bag（1-2-3）, primary filtration network（1-2-2）
It is arranged in mesh screen body（1-2-1）In, the detachable string bag（1-2-3）Pass through the first slide fastener circle respectively（1-2-3-1）, the second slide fastener circle
（1-2-3-2）With mesh screen body（1-2-1）It is connected, the first slide fastener circle（1-2-3-1）It is arranged in mesh screen body（1-2-1）Bottom, second
Slide fastener circle（1-2-3-1）It is arranged in the detachable string bag（1-2-3）Top（1-2-3）, loop bar（2）Including rod handle（2-2）And and its
Threaded connection is fixed on mesh screen circle（1-1）Connector（2-1）On.
2. a kind of Improvement type zoobenthos filter screen according to claim 1, it is characterised in that：The mesh screen circle（1-
1）For the cirque structure of diameter 34-36cm, material is stainless steel, and silk is wound mesh screen circle（1-1）With mesh screen body（1-2-
1）It is connected.
3. a kind of Improvement type zoobenthos filter screen according to claim 1, it is characterised in that：The mesh screen body（1-
2-1）For 58-62 mesh, material is nylon.
4. a kind of Improvement type zoobenthos filter screen according to claim 1, it is characterised in that：The acquisition mesh screen
（1）Primary filtration network equipped with 15-17 mesh（1-2-2）, off-network sieve circle（1-1）It is vertically 24-26cm.
5. a kind of Improvement type zoobenthos filter screen according to claim 1, it is characterised in that：The detachable string bag
（1-2-3）It is 4-6cm arc structures, the detachable string bag for radius（1-2-3）With mesh screen body（1-2-1）Aperture is consistent, is 58-
62 mesh, the detachable string bag（1-2-3）Top be equipped with the second slide fastener circle（1-2-3-2）, mesh screen body（1-2-1）Bottom be equipped with the
One slide fastener circle（1-2-3-1）, the detachable string bag（1-2-3）Pass through the first slide fastener circle（1-2-3-1）, the second slide fastener circle（1-2-3-
2）With mesh screen body（1-2-1）It is connected, the first slide fastener circle（1-2-3-1）With the second slide fastener circle（1-2-3-2）Form zipper.
6. a kind of Improvement type zoobenthos filter screen according to claim 1, it is characterised in that：The mesh screen circle（1-1）
And loop bar（2）For stainless steel, loop bar（2）It is fixed on mesh screen circle（1-1）On, loop bar（2）Long 58-62cm.
7. a kind of Improvement type zoobenthos filter screen according to claim 1, it is characterised in that：The acquisition mesh screen
（1）Whole is vertically 38-42cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810328843.2A CN108318316A (en) | 2018-04-13 | 2018-04-13 | A kind of Improvement type zoobenthos filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810328843.2A CN108318316A (en) | 2018-04-13 | 2018-04-13 | A kind of Improvement type zoobenthos filter screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108318316A true CN108318316A (en) | 2018-07-24 |
Family
ID=62897550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810328843.2A Pending CN108318316A (en) | 2018-04-13 | 2018-04-13 | A kind of Improvement type zoobenthos filter screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108318316A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801675A (en) * | 2018-08-07 | 2018-11-13 | 中国科学院南京地理与湖泊研究所 | The collection device and method in a kind of deposit surface sedimentation water plant brood body library |
| CN109238914A (en) * | 2018-11-23 | 2019-01-18 | 中国科学院南京地理与湖泊研究所 | The research device and analysis method that different-grain diameter biology influences organic matter degradation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202890258U (en) * | 2012-09-27 | 2013-04-24 | 江汉大学 | Large-scale benthonic animal screening net |
| CN202943033U (en) * | 2012-12-19 | 2013-05-22 | 哈尔滨师范大学 | Portable small-scale bottom dweller gradient separator |
| CN205199879U (en) * | 2015-10-28 | 2016-05-04 | 上海海洋大学 | Portable zoobenthos mesh screen device |
| CN205884438U (en) * | 2016-08-09 | 2017-01-18 | 贵州大学 | Little little aquatic animal collection net in compound field |
| CN206378313U (en) * | 2016-11-16 | 2017-08-04 | 安徽师范大学 | A kind of benthon sampling apparatus |
-
2018
- 2018-04-13 CN CN201810328843.2A patent/CN108318316A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202890258U (en) * | 2012-09-27 | 2013-04-24 | 江汉大学 | Large-scale benthonic animal screening net |
| CN202943033U (en) * | 2012-12-19 | 2013-05-22 | 哈尔滨师范大学 | Portable small-scale bottom dweller gradient separator |
| CN205199879U (en) * | 2015-10-28 | 2016-05-04 | 上海海洋大学 | Portable zoobenthos mesh screen device |
| CN205884438U (en) * | 2016-08-09 | 2017-01-18 | 贵州大学 | Little little aquatic animal collection net in compound field |
| CN206378313U (en) * | 2016-11-16 | 2017-08-04 | 安徽师范大学 | A kind of benthon sampling apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801675A (en) * | 2018-08-07 | 2018-11-13 | 中国科学院南京地理与湖泊研究所 | The collection device and method in a kind of deposit surface sedimentation water plant brood body library |
| CN108801675B (en) * | 2018-08-07 | 2024-05-28 | 中国科学院南京地理与湖泊研究所 | Device and method for collecting sediment surface subsided aquatic plant propagule library |
| CN109238914A (en) * | 2018-11-23 | 2019-01-18 | 中国科学院南京地理与湖泊研究所 | The research device and analysis method that different-grain diameter biology influences organic matter degradation |
| CN109238914B (en) * | 2018-11-23 | 2023-09-22 | 中国科学院南京地理与湖泊研究所 | Research device and analysis method for influence of organisms with different particle sizes on degradation of organic matters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Likens et al. | NOTES ON QUANTITATIVE SAMPLING OF NATURAL POPULATIONS OF PLANKTONIC ROTIFERS 1 | |
| Bleiwas et al. | Collection of large and small food particles by Bosmina 1 | |
| CN107396689A (en) | A kind of multi-functional plankton sampler | |
| CN108318316A (en) | A kind of Improvement type zoobenthos filter screen | |
| CN202890258U (en) | Large-scale benthonic animal screening net | |
| CN209824913U (en) | Marine benthos sampling device | |
| CN107421768A (en) | A kind of integral type plankton sampler | |
| CN105092281B (en) | Excrement is sampled and parasite concentration device | |
| CN206275002U (en) | A kind of combined type plankton net | |
| CN211832483U (en) | Offshore fish plankton gathers net many times | |
| CN215992441U (en) | Net rack convenient to collect plankton sample | |
| CN107371584A (en) | A kind of plankton sampler | |
| CN110075990A (en) | Mature grass wrack seeds method for separating and sorting unit based on density variation | |
| CN208155638U (en) | The micro- plastic sample synchronous acquisition device of the more partial sizes of nested | |
| CN205357818U (en) | On --spot simple and easy benthos elutriator | |
| CN108719165B (en) | Fishing gear selective experiment sampling device and method | |
| CN205884438U (en) | Little little aquatic animal collection net in compound field | |
| CN205797702U (en) | The device of rapid screening zoobenthos from deposit | |
| CN106680063A (en) | Pretreatment device for zooplankton samples | |
| CN206399721U (en) | Pretreating device for zooplankter sample | |
| CN104550095B (en) | A kind of automatic washing device for mini-Frac test sample | |
| CN221123921U (en) | Brook benthonic animal sample collection device | |
| CN206641239U (en) | A kind of Copepods collector for sorting size | |
| CN108902065B (en) | Placement type wetland aquatic invertebrate collector and application method thereof | |
| CN213610002U (en) | Be applied to collection device of excrement and urine parasite worm ovum sample |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180724 |
|
| RJ01 | Rejection of invention patent application after publication |