CN2439903Y

CN2439903Y - Macro suction pipet

Info

Publication number: CN2439903Y
Application number: CN 00246666
Authority: CN
Inventors: 秦望森; 李素珍; 段文杰; 刘彩玉; 石磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-31
Filing date: 2000-07-31
Publication date: 2001-07-25
Anticipated expiration: 2010-07-31

Abstract

The utility model relates to a novel suction pipet used in laboratories, which is characterized in that a buffering ball which is provided with a diameter which is larger than the diameter of the liquid storage section of a tube body is arranged on the upper part of the tube body of the suction pipet; one or a plurality of interfaces of a branched tube which are connected and communicated with the ball wall of the buffering ball are arranged on the upper part of the buffering ball. The utility model overcomes problems that the operation is complex, the error is big, the speed is slow, the efficacy is low and liquid reagent is easy to add wrong, which exist in mass constant liquid transfer operations in the laboratory. Thereby, cross contamination among agent is avoided. The macro suction pipet has the advantages of simplified operation procedure, reduced error, high efficiency, high safety and easy cleaning.

Description

A kind of constant pipette

The utility model relates to a kind of labware, is a kind of novel constant pipette.

At present, the quantitative fetching liquid reagent uses pipette often in the laboratory, need the frequent rubber bulb that uses when getting liquid reagent adding, concerning the beginner, be difficult for grasping, particularly when quantitative liquid feeding in enormous quantities is used, speed is slow, efficient is lower, error is bigger, and glass pipette also is not easy to preserve.

At above-mentioned the deficiencies in the prior art, the purpose of this utility model is will provide to overcome pipette weak point in use, simple to operate, quantitatively accurately, a kind of novel constant pipette rapidly and efficiently.

In order to achieve the above object, the technical solution of the utility model is to have adopted a kind of constant pipette, when making this pipette, at the buffering ball of blowing diameter in the body top of pipette greater than body liquid storage section diameter; A branched pipe interface that interlinks with buffering ball ball wall is arranged on the top of described buffering ball; But the short flexible pipe of one section band of socket air filtration cotton on described branched pipe interface.

From technique scheme as can be seen, the utlity model has following beneficial effect:

When liquid reagent pours into pipette, have certain cushioning effect at described buffering ball, can prevent that liquid reagent is excessive;

Branched pipe interface on described buffering ball ball wall is a passage, pipette is communicated with ambient atmosphere, thereby intrusion pipe is separated with liquid column in the pipette, in pipette, form liquid level, also just can accurately add the purpose of getting liquid reagent by observing and the scale position of control liquid level on pipette, reaching;

Can also add the short flexible pipe of one section band of cover air filtration cotton on described branched pipe interface, it can make the air cleaning that enters pipette, also can prevent that liquid reagent is excessive with the buffering ball acting in conjunction simultaneously.

The utility model is further explained and explanation below in conjunction with drawings and Examples:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 assembles schematic diagram for embodiment of the present utility model;

Fig. 3 is an embodiment operation chart of the present utility model.

Structure of the present utility model as shown in Figure 1, manufacturing process of the present utility model is basic identical with former pipette technology, is with the buffering ball 4 of blowing diameter in the body top of pipette 1 greater than body liquid storage section diameter; A branched pipe interface 5 that interlinks with buffering ball 4 ball walls is arranged on the top of buffering ball 4; But the short flexible pipe 22 of one section band of socket air filtration cotton on branched pipe interface 5.Buffering ball 4 has certain cushioning effect when liquid reagent perfusion pipette 1, can prevent that liquid reagent is excessive; Branched pipe interface 5 on the buffering ball 4 ball walls makes pipette 1 communicate with ambient atmosphere, thereby can make the liquid reagent that is filled in the pipette 1 form liquid level, also just can accurately add the purpose of getting liquid reagent by observing and the position of controlling the scale 6 of liquid level on pipette 1, reaching; Can add the short flexible pipe 22 of one section band of cover air filtration cotton on the branched pipe interface 5, can make the air cleaning that enters pipette 1, also can prevent that liquid reagent is excessive simultaneously with buffering ball 4 actings in conjunction.

Embodiment of the present utility model will test utensil by Fig. 2 earlier and assemble as shown in Figures 2 and 3, carry out test operation by Fig. 3 again.Concrete operations are as follows: the liquid reagent with required titration adds in the big ground reagent bottle 7 earlier, cover the bottle closure of rubber 10 that is inserted with short glass bend pipe 8 and long glass bend pipe 9, make short glass bend pipe 8 and long glass bend pipe 9 mouth of

pipe

11 and 12 in 7 bottles of big ground reagent bottles, respectively in bottle on the liquid reagent liquid level and in the bottle under the liquid level close bottle bottom surface locate; Be socketed in long glass bend pipe 9 on 7 bottles of outer port ones 7 of big ground reagent bottle with an end port 23 of the also longer rubber hose 16 of the height of a big ground reagent bottle 7 of ratio again, and press from both sides 15 in a T type of other end port 24 place's cartridge clips flexible pipe control near rubber hose 16; The reagent cabinet that big ground reagent bottle 7 is put on the operating table surface pushes up; Clutch T type flexible pipe control folder 15 with a hand, the tube wall of rubber hose 16 is opened, the another hand is pinched flat rubber bulb 25.An and port 24 of aligning rubber hose 16, loosen rubber bulb 25 to draw air, make liquid reagent siphon in the big ground reagent bottle 7 to rubber hose 16, loosen T type flexible pipe control folder 15 in good time, make it clamp the tube wall of rubber hose 16, stop tapping, be full of liquid reagent in the rubber hose 16; Two adjustable dropper folders 13 and 14 of pipette 1 usefulness vertically are fixed on reagent cabinet frame or the titration stand, the upper port 2 of its pipette 1 will be lower than the bottom surface of big ground reagent bottle 7 again; But one section short flexible pipe 22 that has the air filtration cotton of socket on the branched pipe interface 5 on pipette 1 top in addition; Again a port 24 of rubber hose 16 and the upper port 2 of pipette 1 are nested in succession; The short rubber hose 19 that is wearing T type flexible pipe control folder 18 with a centre is nested the lower port 3 of pipette 1 and the upper port 21 of glass dropper 20 in succession then.So far test the utensil civilian dress and prepare, can carry out test operation.Clutch T type hose clamp 15 with hand, rubber hose 16 tube walls are opened, liquid reagent in the big ground reagent bottle 7 flows in the pipette 1 along rubber hose 16, observe the scale 6 on the pipette 1, when treating in the pipette 1 that the reagent liquid level will reach required scale, unclamp T type flexible pipe control folder 15, make it clamp the tube wall of rubber tube 16 again automatically, stop perfusion fluid.Then with getting the container (test tube commonly used) of desiring to add reagent on the other hand, be placed on the below of the point 26 of glass dropper 20, another hand appropriateness is clutched 18 tapping of T type flexible pipe control folder, observe the position of the liquid level scale 6 of living in of pipette 1 simultaneously with eyes, unclamp T type flexible pipe control folder 18 in good time, reagent liquid level in the pipette 1 is rested on the appropriate scale 6, move and put this test tube well, add again and get next test tube, a ground repeats to add and gets, be added to the reagent liquid level of tapping this time in pipette 1 drops to and is not enough to add when taking off a test tube always, control T type flexible pipe control folder 15 tapping in the pipette 1 again and arrive the position of suitable scale 6, control T type flexible pipe control folder 18 again and in test tube, quantitatively take liquid reagent, operation and so forth can be directly quick with the liquid reagent in the big ground reagent bottle 7, accurately add and get in the test tube.

Claims

1, a kind of constant pipette is characterized in that the buffering ball (4) of a diameter greater than body liquid storage section diameter arranged on the body top of pipette (1).

2, a kind of constant pipette according to claim 1 is characterized in that a branched pipe interface (5) that interlinks with buffering ball (4) ball wall is arranged at the top of described buffering ball (4).

3, a kind of constant pipette according to claim 1 and 2 is characterized in that described branched pipe interface (5) but the short flexible pipe (22) of one section band of last socket air filtration cotton.