CN201454123U

CN201454123U - Quantitative evaporating pipe

Info

Publication number: CN201454123U
Application number: CN200920062746XU
Authority: CN
Inventors: 叶富根; 黄黎
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-21
Filing date: 2009-08-21
Publication date: 2010-05-12
Anticipated expiration: 2019-08-21

Abstract

The utility model relates to an experiment apparatus, which discloses a quantitative evaporating pipe. The evaporating pipe comprises an evaporating tube and a tail tube which are U-shaped. The pipe diameter of the evaporating tube is large and the bottom of the evaporating tube is a semisphere face or a semi-ellipsoidal sphere. The pipe diameter of the tail tube is small and the bottom of the tail tube is the semisphere face or the semi-ellipsoidal sphere. The semisphere face or the semi-ellipsoidal shpere of the evaporating tube is communicated with the top part of the tail tube. The tail tube is provided with two scale lines, the upper one is a quantitative line which is located under the evaporating tube and the lower one is a quality control line. The quantitative evaporating pipe provided by the utility model does not need to be looked after in the evaporating process. After the evaporation, the sample does not have to be transferred, on one hand the sample loss can not be caused, the consumption of organic solvent is reduced, and the subsequent evaporating time and the risk of cross contamination among containers are reduced; on the other hand the operation steps are reduced and the opportunities of the operator contacting with the organic solvent are reduced.

Description

Quantitative concentration tube

Technical field

The utility model relates to experiment utensil field, specifically a kind of concentration tube.

Background technology

In analytical work, general sample can not directly be gone up the machine analysis, and solid sample must be extracted in the liquid and could analyze, even liquid sample just can be used for analyzing after also needing further to purify.Sample often needs to concentrate through extraction with after purifying, can obtain from tens to 100 milliliters of samples that do not wait as solid-liquids such as MAE (microwave extracts fast), PSE (SPE), ASE (accelerated solvent extraction), LLE (liquid-liquid extraction), ultrasonic wave extraction, cable-styled extraction and liquid-liquid extraction technology, purify several milliliters to tens milliliters samples of acquisition later on through SPE, and obtain tens milliliters to up to a hundred milliliters sample through GPC (gel permeation chromatography) chromatographic purification technology, in order to improve the analyzing and testing limit, these samples must concentrate.

Volume of sample is hour (mainly being at SPE pillar user), and a lot of SPE users adopt the 15mL plastic centrifuge tube as the SPE receiving tube, are concentrated into (high-grade Nitrogen evaporator is equipped with liquid level sensor) below the 1mL with the nitrogen method of blowing again, last constant volume.

When volume of sample was big, the user had two kinds of solutions, and first method is to adopt 50mL plastic centrifuge tube nitrogen to blow concentrated.Second method is to be concentrated into below the 10mL through Rotary Evaporators earlier, sample is shifted out from the evaporative flask transfer again, is concentrated into 1mL with the nitrogen method of blowing.

But there is following shortcoming in the method for concentration of prior art:

1., plastic centrifuge tube constant volume effectively and accurately, if transfer sample, both increased operating procedure, shift and not exclusively cause sample loss, increase organic solvent consumption again, prolong follow-up concentration time, and increase operator and organic solvent touch opportunity, not environmental protection, cost increase, and increase the problems such as risk of cross pollution between the container of washing and the container;

2., centrifuge tube do not have the function that keeps concentrate effectively, the operator can not leave fume hood, observes concentration process;

3., can not point out concentrated validity, particularly for the half volatile material, final concentrate can not be less than certain volume, needs nature controlling line indication operator;

4., when using nitrogen to blow, do not meet the laboratory environmental requirement, it is slow to concentrate speed, and it is higher to concentrate boiling point especially, the solvent that latent heat is big;

5., when concentrating bulk sample, Rotary Evaporators can only concentrate by individual sample one by one, the half volatile material rate of recovery is low, evaporative flask cleans also very difficult.

The utility model content

For solving the problem that prior art exists, the utility model provides a kind of and concentrates, keeps the quantitative concentration tube of concentrate and constant volume.

The utility model is achieved in that

A kind of quantitative concentration tube, described concentration tube comprises evaporation tube and tail pipe, described evaporation tube and tail pipe are U-shaped, evaporation tube is the part that bassoon path portion and bassoon bottom are hemisphere face or half ellipsoidal surface, described tail pipe is the part of little caliber and tubule bottom hemisphere face or half ellipsoidal surface, and the hemisphere face of described evaporation tube or half ellipsoidal surface are communicated with the tail pipe top;

Two graduation marks are set on the described tail pipe, above one be quantitative line, quantitatively line is positioned at the evaporation tube below, following one is nature controlling line.

As a kind of preferred version of the present utility model, described quantitative line is positioned at evaporation tube and 0～3mm place, below, tail pipe junction.

Preferably, described quantitative line is at 0.9～1ml place of tail pipe volume, and nature controlling line is at 0.5～0.6ml place of tail pipe volume.

As further preferred version of the present utility model, described tail pipe external diameter is 8～12mm, and tail pipe length is 15～30mm.

Preferably, described tail pipe external diameter is 10～11mm, and tail pipe length is 20～25mm.

Described quantitative concentration tube can be made into plurality of specifications, and the preferred evaporation tube external diameter of the quantitative concentration tube of its medium and small sizes is 20～28mm's.

As another preferred version of the utility model, described concentration tube top is provided with root face or pincers limit, and root face or pincers limit external diameter are than the big 1～3mm of evaporation tube straight tube external diameter.

Optionally, described concentration tube top is provided with screw socket.

The beneficial effect that the utility model brings is:

1., the quantitative concentration tube that provides of the utility model has tail pipe, is used to keep concentrate, need not the people in the concentration process and look after;

2., the quantitative concentration tube that provides of the utility model, quantitative graduation mark is arranged at its tail pipe top, the person of being convenient to operation is constant volume exactly, need not to shift sample after concentrating, can not cause sample loss on the one hand, reduced the consumption of organic solvent, reduced follow-up concentration time, reduce the risk of cross pollution between the container, reduced operating procedure on the other hand, reduced the chance that the operator contacts with organic solvent simultaneously;

3., the quantitative concentration tube that provides of the utility model, its tail pipe has nature controlling line, can conveniently indicate the operator.And can be used as quantitative line;

4., no matter large volume sample or small volumes of sample, correspondingly quantitative concentration tube can be provided, be that trumpet, medium size, the quantitative concentration tube of large size all need not to shift sample, can shift quantitative concentration tube and sample wherein, use same quantitative concentration tube to concentrate, keep concentrate and constant volume;

5., quantitatively concentration tube is easy to clean;

6., need not drip washing and quantitatively concentrate tube wall, during supporting uses of quantitative concentration tube provided by the utility model and special-purpose concentrating instrument, be concentrated to terminal point after direct constant volume get final product;

7., have high efficiency various product concentrating capacity, quantitative concentration tube that the utility model provides and the special-purpose supporting use of concentrating instrument can concentrate a plurality of samples simultaneously;

8., quantitatively the quantitative graduation mark of concentration tube during with the supporting use of the concentrating instrument of special use, meets the ISO14000 environmental requirement near evaporation tube, even the big solvent of higher boiling latent heat also can be realized concentrating fast.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute to improper qualification of the present utility model, in the accompanying drawings:

The structural representation of the quantitative concentration tube that Fig. 1 provides for the utility model embodiment.

The specific embodiment

Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.

As shown in Figure 1, the quantitative concentration tube that present embodiment provides, comprise evaporation tube 1 and tail pipe 2, described evaporation tube 1 and tail pipe 2 are U-shaped, evaporation tube 1 is bassoon, tail pipe 2 is a tubule, evaporation tube 1 is the part 102 of hemisphere face or half ellipsoidal surface for bassoon path portion 101 and bassoon bottom, tail pipe is the part 202 of tubule footpath 201 and tubule bottom hemisphere face or half ellipsoidal surface, the hemisphere face of evaporation tube or half ellipsoidal surface 102 are communicated with tail pipe 2 tops, adopt the mode of sintering to make the hemisphere face of evaporation tube or half ellipsoidal surface be contracted to the tail pipe top gradually along camber line usually; Two graduation marks are set on the tail pipe 2 in addition, above one be quantitative line 203, quantitatively line 203 is positioned at the evaporation tube below, following one is nature controlling line 204, the person of being convenient to operation exactly constant volume and to concentrate the control, nature controlling line 204 also can use as quantitative line in addition, and quantitative line 203 and nature controlling line 204 are ring shape and are arranged on the tail pipe 2, make operating personnel can accurately observe liquid level from any angle.Consider that glass is in sintering process, drop-down place is because light refraction can not be as the position of quantitative graduation mark, so quantitatively line must be on tail pipe, (if the technology for making glass advanced person of 0～3mm place below evaporation tube and tail pipe junction preferably, evaporation tube should not be pulled down to tail pipe and connect, but tail pipe is directly connected in evaporation tube hemisphere face or half ellipsoidal surface bottom).

After the quantitative concentration tube that sample adopts the utility model to provide concentrated, concentrate was retained in the tail pipe 2, can be directly with the concentrate constant volume in the tail pipe 2; And do not need as prior art, concentrate need be migrated out in the test tube or in other containers, again with fresh organic solvent repeatedly behind drip washing test tube wall or other chamber walls, merge complete soln and concentrate again and constant volume, avoided the loss of sample in the transfer process like this, reduced the consumption of organic solvent, reduced follow-up concentration time, reduce the risk of cross pollution between the container, reduced operating procedure on the other hand, reduced the chance that the operator contacts with organic solvent simultaneously.

Present embodiment can be made into any required specification according to actual user demand, and wherein quantitatively line 203 is at 0.9～1ml place of tail pipe volume, and nature controlling line 204 is at 0.5～0.6ml place of tail pipe volume; Tail pipe can be designed to the pipe that external diameter is 8～12mm, and length is 15～30mm, and preferred external diameter is 10～11mm, and length is 20～25mm, and more preferably external diameter is 10mm, and length is 25mm.

Evaporation tube can be designed to any needed size, perhaps is designed to different size according to institute coupling instrument:

(1) (the evaporation tube external diameter is 20～28mm to small size quantitatively concentration tube, the evaporation tube external diameter 20～24mm of SPE concentration tube wherein, the evaporation tube external diameter of SV concentration tube is 24～28mm, the two all belongs to the small size quantitatively series of concentration tube), various brands solid-phase extracting instrument on SPE concentration tube and the market (as Superlco, Agilent, Varian, Merck etc.) compatibility, quantitatively the concentration tube pipe support is also compatible, and the operator can shift quantitative concentration tube and sample wherein in whole ground; SV type concentration tube is a kind of concentration tube of more general standard type;

(2) the quantitative concentration tube of medium size (UV concentration tube) can be used for concentrating the sample of larger volume, satisfies the user of most of LLE, SLE, PSE, ASE etc.;

(3) the quantitative concentration tube of large size can be used for the user of special bulk sample, and compressible maximum sample volume can reach more than the 200mL.

Be that trumpet, medium size, the quantitative concentration tube of large size all need not to shift sample, can shift quantitative concentration tube and sample wherein, use same quantitative concentration tube to concentrate, keep concentrate and constant volume; Various brands solid-phase extracting instrument (as Superlco, Agilent, Varian, Merck etc.) compatibility on the concentrated pipe support of the quantitative concentration tube of its medium and small sizes (SPE type) and the market, the operator can shift quantitative concentration tube and sample wherein in whole ground.

For concentration tube can be hung on the concentrated pipe support that shifts usefulness, root face or pincers limit 103 can be set on the concentration tube top, root face or pincers limit external diameter are than the big 1～3mm of evaporation tube straight tube external diameter, and convenient whole is shifted concentration tube and sample wherein.

Also screw socket can be arranged in the top of quantitative concentration tube, be convenient to and being connected of other instruments.

More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the embodiment of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. quantitative concentration tube, it is characterized in that: described concentration tube comprises evaporation tube and tail pipe, described evaporation tube and tail pipe are U-shaped, evaporation tube is the part that bassoon path portion and bassoon bottom are hemisphere face or half ellipsoidal surface, described tail pipe is the part of little caliber and tubule bottom hemisphere face or half ellipsoidal surface, and the hemisphere face of described evaporation tube or half ellipsoidal surface are communicated with the tail pipe top;

2. quantitative concentration tube as claimed in claim 1 is characterized in that: described quantitative line is positioned at evaporation tube and 0～3mm place, below, tail pipe junction, and quantitatively line is at 0.9～1ml place of tail pipe volume, and nature controlling line is at 0.5～0.6ml place of tail pipe volume.

3. quantitative concentration tube as claimed in claim 1 or 2 is characterized in that: described tail pipe external diameter is 8～12mm, and tail pipe length is 15～30mm.

4. quantitative concentration tube as claimed in claim 3 is characterized in that: described tail pipe external diameter is 10～11mm, and tail pipe length is 20～25mm.

5. quantitative concentration tube as claimed in claim 1 is characterized in that: described evaporation tube external diameter is 20～28mm.

6. quantitative concentration tube as claimed in claim 5 is characterized in that: described concentration tube top is provided with root face or pincers limit, and root face or pincers limit external diameter are than the big 1～3mm of evaporation tube straight tube external diameter.

7. quantitative concentration tube as claimed in claim 5 is characterized in that: the screw socket that described concentration tube top is provided for connecting.