CN202315918U

CN202315918U - Short-neck multi-range volumetric flask

Info

Publication number: CN202315918U
Application number: CN2011204493207U
Authority: CN
Inventors: 党佩
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-08
Filing date: 2011-11-08
Publication date: 2012-07-11
Anticipated expiration: 2021-11-08

Abstract

The utility model discloses a short-neck multi-range volumetric flask comprising a volumetric flask body and a fine glass pipe, wherein the fine glass pipe is vertically installed on the bottom surface of the volumetric flask body, the bottom end of the fine glass pipe is provided with a through hole, a flask opening is arranged on the volumetric flask body, a ground glass stopper is in sleeve joint in the flask opening, the ground glass stopper and the flask opening are tightly combined, and the top end of the ground glass stopper, which is higher than the flask opening, is connected with a flask stopper cap; and a volumetric scale mark with a plurality of ranges is engraved on the fine glass pipe. The short-neck multi-range volumetric flask has high stability, high multi-range accuracy and better service life and is convenient to carry.

Description

Short neck multrirange volumetric flask

Technical field

The utility model relates to chemical experimental instrument, relates in particular to a kind of short neck multrirange volumetric flask.

Background technology

Traditional volumetric flask is the flat volumetric apparatus of a kind of elongated necks pyriform; Have naked ground glass stopper; There is a graduation mark (to be illustrated in when the graduation mark of liquid concave meniscus and volumetric flask neck is tangent under the indication temperature on the neck; Liquor capacity is gone up the volume that marks with bottle just and is equated), the capacity bottle is marked with: temperature, capacity.Consequently: 1, elongated neck improves the volumetric flask center of gravity, stability decreases, and volumetric flask is prone to topple over fragmentation; 2, a kind of volumetric flask of model has only a scale, can only prepare the solution of a volumes, and the volumetric flask of different model could be prepared the solution of different volumes; Such present situation; Not only increase the usage quantity of volumetric flask, and increased the use amount of material, both wasted resource; Take up room, again manageability not; 3, naked ground glass stopper is bolted to and is prone on the bottleneck pollute bottleneck, is placed on not only to be prone to contaminatedly on the desktop, and is prone to roll, and is prone to break into pieces; 4, bottle stopper and bottle do not have same sign to be prone to obscure, and a large amount of a whole set of volumetric flasks can not be re-used; 5, big volume volumetric flask neck is thicker, and it is bigger that the solution error is joined by institute; 6, the low capacity bottleneck is thin, and liquid shifts inconvenient, is prone to scatter.

Summary of the invention

The utility model purpose provide a kind ofly lack neck, convenient multrirange, cock cap arranged, more accurately, more stable short neck multrirange volumetric flask.

For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:

A kind of short neck multrirange volumetric flask comprises the capacity bottle, and the capacity bottle is provided with bottleneck, it is characterized in that: be vertically installed with thin glass tube on the bottom surface of capacity bottle, the bottom of thin glass tube is provided with through hole (3), is carved with the containing mark line on the thin glass tube.

According to described short neck multrirange volumetric flask, it is characterized in that: on the said bottleneck ground glass stopper is housed, ground glass stopper is socketed in the bottleneck, and the top of ground glass stopper connects the bottle stopper cap; The bottom of bottle stopper cap contacts with the capacity bottle.

According to described short neck multrirange volumetric flask, it is characterized in that: the graduation mark on the said thin glass tube has a plurality of ranges.

According to described short neck multrirange volumetric flask, it is characterized in that: said capacity bottle is the pyriform of short neck.

According to described short neck multrirange volumetric flask, it is characterized in that: be carved with the temperature mark on the said capacity bottle.

The utility model has the advantages of: the improvement design of the volumetric flask of the utility model has been avoided the variety of issue in the volumetric flask use: adopt the bottleneck of low clearance, reduced the center of gravity of volumetric flask, increased the stability of volumetric flask.The hollow thin glass tube of setting up more is prone to observe, and has improved the accuracy of the solution concentration that is equipped with; Simultaneously, the multi-scale on the glass tube makes same volumetric flask have the function of the multiple volume solution of preparation.Naked ground glass stopper adds glass cap and has not only played support, and stopper is not rolled, and avoids breaking, and the more important thing is that cock cap protects ground glass plug, avoided pollution, guaranteed join the purity of solution.The same numbering of bottle stopper and bottle guarantees that the plug bottle is consistent, has avoided obscuring the situation that a large amount of a whole set of volumetric flasks can not be re-used because of bottle stopper.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the accompanying drawing: 1, capacity bottle; 2, thin glass tube; 3, through hole; 4, bottleneck; 5, ground glass stopper; 6, bottle stopper cap.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:

The short neck multrirange of the utility model volumetric flask is as shown in Figure 1; A kind of short neck multrirange volumetric flask; Comprise capacity bottle 1, capacity bottle 1 is provided with bottleneck 4, it is characterized in that: be vertically installed with thin glass tube 2 on the bottom surface of capacity bottle 1; The bottom of thin glass tube 2 is provided with through hole 3, is carved with the containing mark line on the thin glass tube 2.According to described short neck multrirange volumetric flask, it is characterized in that: on the said bottleneck 4 ground glass stopper 5 is housed, ground glass stopper 5 is socketed in the bottleneck 4, and the top of ground glass stopper 5 connects bottle stopper cap 6; The bottom of bottle stopper cap 6 contacts with capacity bottle 1.According to described short neck multrirange volumetric flask, it is characterized in that: the graduation mark on the said thin glass tube 2 has a plurality of ranges.According to described short neck multrirange volumetric flask, it is characterized in that: said capacity bottle is the pyriform of short neck.According to described short neck multrirange volumetric flask, it is characterized in that: be carved with the temperature mark on the said capacity bottle 1.

The utility model is as shown in Figure 1, comprises the thin glass tube 2 and the ground glass stopper 5 of capacity bottle 1, bottle inner bottom part central vertical.

Its method for using is specific as follows:

1. whether the volumetric flask preoperation inspection leaks, and inspection method is following: inject near running water to the central thin glass tube 2 the highest graduation marks, build ground glass stopper 5.At the bottom of the right hand was held bottle, whether handstand 2min observed ground glass stopper 5 and leaks.As do not leak, with ground glass stopper 5 Rotate 180 degree, leak detection is as not leaking, then available again.As leak, need the transducer set volumetric flask, whether inspection leaks again.

2. after leak detection finishes, wash volumetric flask 2-3 time with running water and distillation pond respectively, but unavailable solution washing to be contained.

3. be placed on accurate load weighted solid solute in the beaker, dissolve with little solvent.Transfer to solution in the short neck multrirange volumetric flask then.Can all transfer in the short neck multrirange volumetric flask for the assurance solute, repeatedly wash beaker with solvent, and all transfer to wash solution in the short neck multrirange volumetric flask.To use the glass bar drainage during transfer.Method is that glass bar one end is leaned against on the short neck multrirange capacity bottleneck inwall, notes not letting other position of glass bar touch short neck multrirange capacity bottleneck, prevents that liquid from flowing on the short neck multrirange volumetric flask outer wall.

4. the liquid that in short neck multrirange volumetric flask, adds (summation can by the beaker rough calculation) liquid level is during near central thin glass tube 2 certain graduation mark (surpass join the graduation mark of liquor capacity); Should use dropper instead and carefully drip, just in time level is tangent to make liquid meniscus and thin glass tube 2 graduation marks at last.Surpass graduation mark if add water, then need preparation again.Or continue to add water to another graduation mark, obtain the solution of another kind of concentration.

5. cover tight ground glass stopper 5, make the liquid mixing in the bottle even with the method for reversing and shake.Find that liquid level is lower than graduation mark if leave standstill the back, this is because minute quantity solution is in the loss of the wetting institute of neck in the volumetric flask, thus do not influence the concentration of institute's obtain solution, thus in bottle, do not add water again, otherwise the solution concentration of preparing making reduces.

Should note when using short neck multrirange volumetric flask following some:

1. volumetric flask has a plurality of ranges, notes selecting the range of needs during use.Serviceability temperature is 20 degrees centigrade.

2. material can not dissolve in volumetric flask, transfers in the volumetric flask after should solute being dissolved in beaker.

3. the total amount sum of liquid volume can not surpass the graduation mark of required range in the solvent total amount that is used to wash beaker and the bottle.

4. volumetric flask can not heat.If solute is heat release in course of dissolution; Treat to shift again after the solution cooling; Because general volumetric flask is under 20 ℃ temperature, to demarcate, if the solution injection capacity bottle that temperature is higher or lower, volumetric flask then can expand with heat and contract with cold; The volume of measuring will be inaccurate, the solution concentration that causes being prepared is inaccurate.

5. volumetric flask can only be used for obtain solution, can not storage solutions, because solution may corrode bottle, thereby the precision of volumetric flask is affected.

6. volumetric flask is with finishing washes clean in time, bottle stopper beyond the Great Wall, and between stopper and bottleneck, press from both sides a little paper slip, prevent bottle stopper and bottleneck adhesion.

The utility model provides a kind of short neck multrirange volumetric flask; The technical scheme that adopts is: the bottleneck of traditional volumetric flask is shortened, and bottleneck is extended to 24 bores, and bottle central authorities set up the thin glass tube 2 of a hollow; It has through hole 3 with bottle end joint; Pipe is marked with a plurality of volume markings, the ground glass stopper 5 outer bottle stopper caps 6 that add, and bottle stopper cap 6 is carved with same numbering with capacity bottle 1.The utility model has following advantage than the conventional capacity bottle: 1, center of gravity reduces, and is more stable.2, bottleneck fades to 24 bores, the easier solution that is transferred outside toward in.3, the height of liquid level in even thin glass tube more is prone to observe during obtain solution, and liquor capacity is more accurate, and the concentration of obtain solution is more accurate.4, have a plurality of ranges, can prepare the solution of certain density solution of different volumes or certain volume variable concentrations, the model of volumetric flask and quantity are significantly reduced, save resource and space, manageable.5, cock cap protects ground glass plug, place well pollution-free, guarantee join the purity of solution.6, the same numbering of cock body can not obscured, and has avoided obscuring the wasting of resources that can not use volumetric flask to cause because of bottle stopper.

Embodiment recited above describes the preferred implementation of the utility model; Be not that design and protection domain to the utility model limits; Under the prerequisite that does not break away from the utility model design concept; Common engineers and technicians make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model.

Claims

1. one kind short neck multrirange volumetric flask; Comprise capacity bottle (1), capacity bottle (1) is provided with bottleneck (4), it is characterized in that: be vertically installed with thin glass tube (2) on the bottom surface of capacity bottle (1); The bottom of thin glass tube (2) is provided with through hole (3), and thin glass tube is carved with the containing mark line on (2).

2. short neck multrirange volumetric flask according to claim 1 is characterized in that: ground glass stopper (5) is housed on the said bottleneck (4), and ground glass stopper (5) is socketed in the bottleneck (4), and the top of ground glass stopper (5) connects bottle stopper cap (6); The bottom of bottle stopper cap (6) contacts with capacity bottle (1).

3. short neck multrirange volumetric flask according to claim 1, it is characterized in that: the graduation mark on the said thin glass tube (2) has a plurality of ranges.

4. short neck multrirange volumetric flask according to claim 1 is characterized in that: said capacity bottle is the pyriform of short neck.

5. short neck multrirange volumetric flask according to claim 1 is characterized in that: be carved with the temperature mark on the said capacity bottle (1).