CN205562494U

CN205562494U - Simple and easy general titration outfit

Info

Publication number: CN205562494U
Application number: CN201620333991.XU
Authority: CN
Inventors: 毕秀成
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-20
Filing date: 2016-04-20
Publication date: 2016-09-07
Anticipated expiration: 2026-04-20

Abstract

The utility model provides a simple and easy general titration outfit, inhale buret, solution body controlling means, aurilave, fixed bolster including the graduation, the fixed bolster comprises burette rack and burette clamp, and the graduation is inhaled buret and is passed through burette clamp and fix on burette rack, wherein, buret is inhaled to the graduation and solution controlling means connects, and wherein solution controlling means comprises silicone tube, glass pearl, and aurilave cooperates the use. The graduation is inhaled buret upper portion and is connected the use with solution controlling means. Use utility model, just can do conventional titration experiment if adopt 50ml's graduation to inhale buret, can do the experiment of a little microtitrations if adopt 25ml, 10ml, 5ml, 2ml's graduation to inhale buret, simultaneously the utility model discloses, both can regard as the acid buret, also can regard as the base buret, operate nimble convenience very. One set of multiple usage of device, the spending of reducible instrument expense, synthesize, the utility model discloses the effect that has easy to handle, saving funds, improvement experimental efficiency.

Description

The titration appratus of simple general use

Technical field

This utility model relates to a kind of chemical experimental instrument, the titration appratus of a kind of simple general use.

Background technology

Burette is scientific research department and the enterprise conventional instrument for observation measurements, requisite instrumentation commonly used in Ye Shi middle school and college chemical experiment teaching.Burette is generally divided into two classes, and one is acid buret, and one is base buret.Because rubber is had corrosion function, akaline liquid to have corrosion function for glass by acidic liquid, so both burettes are different.

Acid buret is a kind of burette commonly used in titrimetry, by the outflow rotating control standard solution of glass cock.In addition to strong base solution, other solution are as generally individually using acid tube during volumetric solution.Before using, first should check whether cock coordinates closely with cock set, in order to make cock rotate flexibly and overcome drainage, cock need to be coated with vaseline oil or vacuum cock fat.Glass cock is can not arbitrarily changing of fixed configurations.

Base buret is the burette used when alkaline solution is as volumetric solution, is configured with the latex tubing of embedded glass pearl, keeps left hands thumb and forefinger squeezes bead and controls the outflow of standard solution.Should check before using that latex tubing and bead are the most intact.If sebific duct is the most aging, excessive (being difficult to operation) of bead or too small (leaking), should change.

Often there is bubble or have the place of underfill at the outlet point mouth of acid base titration pipe.Eliminating in time will be checked before titration.

Summary of the invention

The purpose of this utility model is to provide a kind of general titration appratus and substitutes acid buret and base buret, to reach effect cost-effective, the most universal, easy to operate.

To achieve these goals, the utility model proposes the titration appratus of a kind of simple general use, the titration appratus of simple general use, device, fixed support is controlled including indexing pipette, solution, ear washing bulb, fixed support is made up of burette stand and burette clamp, indexing pipette is fixed on burette stand by burette clamp, it is characterized in that: solution controls device and is connected with the top of indexing pipette, described solution controls device and is made up of silica gel tube, bead, and bead embeds one end of silica gel tube and is expressed to the distance silica gel mouth of pipe 5～8 centimeters；The other end of described silica gel tube is socketed in the top of indexing pipette；Ear washing bulb is separately provided, and conjugate solutions uses when loading indexing pipette.

This utility model is in line with nimble purpose cost-effective, simple to operate, and the parts relating to this utility model have done preferably, as described below: solution controls to use in device the medical silicone tube of a diameter of 6-9mm.

Use this utility model, if using the indexing pipette of 50ml just can do the titration experiments of routine, if using the indexing pipette of 50ml, 25ml, 10ml, 5ml, 2ml to do slightly measure titration experiments.

Beneficial effect: this utility model both can be as acid buret, it is possible to as base buret, operates the most flexible；The multiple usage of set of device, can reduce the spending of instrument expense；The design of this device is exquisite exquisite；Experimental principle of the present utility model is consistent with normal experiment with method, and experimental result is consistent with conventional method, is worth at chemical experiment teaching and analyzes popularization and application in measuring unit.Integrating, this utility model has operation nimble, reduction of expenditure, the effect of raising conventional efficient.

Accompanying drawing explanation

Fig. 1 is result schematic diagram of the present utility model.

Label declaration in figure: indexing pipette 1, silica gel tube 2, bead 3, ear washing bulb 4, burette clamp 5, burette stand 6.

Detailed description of the invention

It is an example of the present utility model with reference to Fig. 1, the titration appratus of this simple general use is mainly made up of indexing pipette 1, silica gel tube 2, bead 3, ear washing bulb 4, burette clamp 5, burette stand 6, indexing pipette 1 is fixed on burette stand 6 by burette clamp 5, one end of silica gel tube 2 is embedded bead 3 and is expressed at the distance silica gel mouth of pipe 5～8cm, solution has just been become to control device, during use the other end of silica gel tube 2 and be fixed on titration stand indexing pipette 1 upper connecting sleeve jail, ear washing bulb 4 with the use of.It is general that a whole set of titration appratus achieves acid base titration, and constant trace is changeable.

Concrete operation step is: first indexing pipette volumetric solution rinse be fixed on titration stand for more than 3 times, then the device that controls of solution is connected with the top of indexing pipette, again volumetric solution is placed on titration platform, move down indexing pipette and insert 1-2cm under liquid level, hand thumb and forefinger squeeze the silica gel tube of bead side and make to form a small gap between silica gel tube and bead, after portion of air got rid of by left hand grip pressure ear washing bulb, immediately the sharp mouth of ear washing bulb is connected on the silica gel mouth of pipe, the left hand that comes up makes volumetric solution suck in indexing pipette, when in pipe, liquid level unclamps when rising to more than " 0 " graduation mark and squeezes the right hand of bead, synchronize to remove ear washing bulb.Also volumetric solution is removed simultaneously, indexing pipette is adjusted to proper height.

Before titration, indexing pipette liquid level is regulated at 0.00ml by the silica gel tube squeezing bead side.During titration, left hand squeezes bead and controls the speed of titration, and the right hand grips conical flask and drips while shake.To slow down close to rate of titration during terminal, the dynamics squeezing bead side silica gel tube progressively diminishes, and controls the dropping of drop one or half ground；When titration is reached home, left hand stops squeezing, and records titration data.Carry out analysis and the process of data the most by a conventional method.

Claims

1. the titration appratus of simple general use, device, fixed support is controlled including indexing pipette, solution, ear washing bulb, fixed support is made up of burette stand and burette clamp, indexing pipette is fixed on burette stand by burette clamp, it is characterized in that: solution controls device and is connected with the top of indexing pipette, and described solution controls device and is made up of silica gel tube, bead, and bead embeds one end of silica gel tube and is expressed to the distance silica gel mouth of pipe 5～8 centimeters；The other end of described silica gel tube is socketed in the top of indexing pipette；Ear washing bulb is separately provided, and conjugate solutions uses when loading indexing pipette.

The titration appratus of simple general use the most according to claim 1, it is characterised in that: described indexing pipette is the indexing pipette of 2ml, 5ml, 10ml, 25ml or 50ml.