CN205628003U - Many fat tripe pipettes - Google Patents

Abstract

The utility model discloses a many fat tripe pipettes, it has been solved current accuracy and has moved and get a plurality of different volume liquid, often needs the problem of many fat tripe pipettes, its characterized in that: it is an inflated glass pipe in long and thin and middle many places, and it has an annular marking to expand an upper end in every of pipe, expand the part promptly fat tripe indicate the temperature of its volume and timing signal. The beneficial effects of the utility model are that: pipette can replace many pipettes to use, with low costs, the accuracy is high, easy and simple to handle.

Description

The most fat tripe pipet

One, technical field

The invention belongs to experiment equipment technical field, be specifically related to one how fat tripe pipet.

Two, background technology

Pipet is used to accurately pipette the measuring device of certain volume solution, is that one measures formula instrument, is only used for measuring the volume of its released solution.Fat tripe pipet is that one elongated and glass tubing that centre is expanded, has an annular graticule in the upper end of pipe, and enlargement indicates its volume and the temperature of timing signal, and accuracy is higher.Conventional fat tripe pipet has 10 mL, 25 mL, 50 mL, 100mL equal-specifications；Graduated pipette is the formula that the measures volumetric glass with reticule, pipettes the solution of on-fixed amount for metering, and accuracy is relatively low.

Metering shifting liquid is the experimental implementation that all physics, chemistry and biology laboratory are the most universal.In the experimentations such as optimization of process conditions, be often required to accurately measure and pipette the solution that a series of volume changes according to certain rules, as volume be 10 mL, a series of solution of 25 mL, 50 mL, 75mL, 100mL.If the graduated pipette selecting a volume to be 100 mL, can pipette volume be 10 mL, the solution of a series of stereomutations of 25 mL, 50 mL, 75mL, 100mL, but the accuracy of pipetted solution does not often reach requirement of experiment；If selecting fat tripe pipet, the accuracy of pipetted solution can reach requirement of experiment, but just can accomplish with the fat tripe pipet of branched different size, and experimental implementation difficulty increases.Because before every fat tripe pipet uses, should repeatedly embathing by chemical washes, repeatedly rinse with tap water again, pure water to the greatest extent is cleaned multiple times, also with pipetting solution repeatedly rinse.

Three, summary of the invention

It is an object of the invention to, it is provided that a kind of can accurately pipette the solution that a series of volume changes according to certain rules, the how fat tripe pipet of washing times can be reduced again.

Embodiments of the invention are achieved in that

A kind of how fat tripe pipet is the glass tubing that elongated and middle many places are expanded, and has an annular graticule in each upper end, place of expanding of pipe, and the most fat tripe of enlargement indicates its volume and the temperature of timing signal.The volume of each fat tripe can be equal, it is also possible to changes according to certain rules.If the volume of each fat tripe is 10mL, fat tripe indicates 10mL, 20 mL, 30 mL, 40 mL, 50mL, 60 mL, 70mL, 80mL, 90mL, 100mL respectively；The progressive law that volume ratio is 2 change and for example indicated by adjacent fat tripe, fat tripe indicates 5 mL, 10mL, 20 mL, 40 mL, 80 mL, 160mL respectively.

The invention has the beneficial effects as follows: a pipet can replace branched pipet to use, adult is low, degree of accuracy is high, easy and simple to handle.

The invention will be further described below in conjunction with the accompanying drawings.

Four, accompanying drawing explanation:

In order to be illustrated more clearly that technical scheme, in describing embodiment below, the required accompanying drawing used is introduced briefly, apparently, accompanying drawing in describing below is only some embodiments of the present inventor, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of the present invention.

In figure: 1 is fat tripe, 2 is annular graticule, and 3 is the temperature of volume and timing signal, and 4 is glass tubing.

Five, detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art under not making creative work premise, all other embodiments obtained, broadly fall into protection scope of the present invention.

As it is shown in figure 1, a kind of how fat tripe pipet is the glass tubing 4 that elongated and middle many places are expanded, having an annular graticule 2 in each upper end, place of expanding of glass tubing 4, the most fat tripe of enlargement 1 indicates its volume and the temperature 3 of timing signal.The volume of each fat tripe 1 can be equal, it is also possible to changes according to certain rules.

Implement operating procedure of the present utility model as follows:

1, before using: should select, according to requirement of experiment, the how fat tripe pipet that fat tripe change in volume rule is suitable, as shown in Figure 1.First embathe with chromic acid lotion, to remove the greasy dirt of how fat tripe pipet inwall.Then rinse the washing liquid of residual with tap water, then clean with distilled water.How fat tripe pipet inwall after Xi Jinging should not hang the globule.

2, before pipetting solution: should first with filter paper, the water inside and outside how fat tripe pipette tip be blotted.Then, right-handed thumb and middle finger pinch the upper end of how fat tripe pipet, are inserted by the end opening of pipe in the solution to be drawn, inserting the most shallow or too deep, at generally 10～20mm, the most shallow can generation is emptied, make dirty in solution is drawn onto ear washing bulb solution, too deep again can outer to attach solution too much at pipe.Left hand takes ear washing bulb, first ball hollow air pressure is gone out, then it is suitable for reading that the sharp mouth of ball is connected on pipet, in the ear washing bulb flattened that comes up makes solution suction tube, first suck about the 1/3 of this pipe capacity, right-handed forefinger pins the mouth of pipe, takes out, horizontal holds, and turne tube makes solution touch the most annular graticule 2 with upper bit, to replace the moisture of inwall, then solution is released from the end opening of pipe and discarded, the most repeatedly wash 3 times.

2, liquid imbibition is moved for the first time: draw solution is to volume required, and the generally first fat tripe upper annular graticule more than 2, the most right-handed forefinger pins the mouth of pipe.

3, regulating liquid surface: be lifted up leaving liquid level by how fat tripe pipet, the end of pipe still leans against on the inwall containing solution vessel, pipe shaft is kept upright, slightly loosen solution in forefinger (sometimes can slightly rotate suction pipe) makes pipe slowly to flow out from end opening, bottom the meniscus of solution tangent with the first fat tripe upper annular graticule 2 till, compress the mouth of pipe with forefinger immediately.Most advanced and sophisticated drop is removed by wall, removes how fat tripe pipet, insert in the vessel accepting solution.

4, solution is released: accept the vessel conical flask in this way of solution, conical flask should be made to tilt 30 °, the most fat tripe pipet is upright, pipe lower end is against conical flask inwall, slightly unclamp forefinger, allow solution slowly flow down along bottle wall, take out how fat tripe pipet again after needing after whole solution stream is complete to wait 15s, in order to make the part solution being attached to tube wall be flowed out.If how fat tripe pipet does not indicates " blowing " word, then remaining in the solution in tip end can not blow out, because measuring of being demarcated of how fat tripe pipet does not include this part residual solution in volume.

5, repeat to move liquid: first draw solution is to volume required corresponding fat tripe upper annular graticule more than 2, more right-handed forefinger pins the mouth of pipe.Then, by 3,4 step operation.

Claims (1)

1. fat tripe pipet more than a kind, it is characterised in that it is the glass tubing that elongated and middle many places are expanded, has an annular graticule in each upper end, place of expanding of pipe, and the most fat tripe of enlargement indicates its volume and the temperature of timing signal.