PH value of fabrics tests dedicated extract liquor beaker
Technical field
The utility model belongs to pH value of fabrics testing field more particularly to a kind of pH value of fabrics tests dedicated extract liquor
Beaker.
Background technique
The pH value of textile is forced examination in GB 18401-2010 " national general safety technical code for textile products "
One of index and one of the routine inspection project of textile laboratory.
The entire experiment flow of pH value of fabrics test, foundation GB/T 7573-2009 be " pH value of textile aqueous extract liquor
Measurement " it is described, include three parts: sample cutting, liquid feeding vibrate and the measurement of pH value.
Sample cutting, it is desirable that tester takes 3 parallel samples, each weighs (2.00 ± 0.05) g or so, and by each sample
It is cut into the fragment of 5*5mm;
Liquid feeding oscillation, it is desirable that every part of sample is put into a conical flask by tester, and 100ml potassium chloride is added
Solution or tertiary effluent vibrate 2h ± 5min with oscillator, and oscillator a batch can vibrate the conical flask of 24 stations under normal conditions
Sample;
The measurement of pH value, it is desirable that tester pours into the extract liquor in conical flask after oscillation in beaker, is stirred using pH meter
Mix sample, the pH value of test sample.
The operating process of the measurement of current above-mentioned pH value, usually there are two types of modes of operation by tester:
The first, the extract liquor in conical flask after oscillation can successively be poured into beaker, be made according to the oscillation sequence of sample
Sample, the pH value of test sample, after testing a sample, then by the extraction in conical flask after next oscillation are stirred with pH meter
Liquid pours into beaker, retest operation;
Second, the extract liquor in conical flask after oscillation can be successively poured into each beaker, reuse pH meter stirring
Sample successively tests the pH value of sample in each beaker;
Since the stabilization time of pH meter reading is longer, result in the test interval of each sample longer in this way.With every
For the extract liquor of a sample average 2 minutes can be only achieved pH meter stable reading, when operating in first way, when test to the
When 24 samples, 46 minutes have been spaced, has also indicated that the more leachings in Klorvess Liquid or tertiary effluent of the 24th sample
It has steeped 46 minutes;When operating by the second way, when test is to the 24th sample, 46 minutes are also spaced, also with regard to table
The extract liquor of bright 24th sample has been exposed in air 46 minutes;
The first above-mentioned mode of operation, the sample tested after causing, theoretically excessively extraction, the test condition of front and back sample
Do not reach unified;Second of mode of operation, the sample tested after causing, theoretically due to the exposure aerial time compared with
It is long, influence the true value of sample pH value test;
Therefore, no matter which kind of above-mentioned mode of operation, theoretically can all increase sample pH value test error, influence sample pH
The test result of value.
Utility model content
The purpose of the utility model is to provide a kind of pH value of fabrics to test dedicated extract liquor beaker.
The utility model provides a kind of dedicated extract liquor beaker of pH value of fabrics test, which is characterized in that including dedicated
Beaker and air exclusion film;
The Special beaker diameter is 50mm, volume 100ml;
The air exclusion film diameter is 60mm, and with a thickness of 0.05mm, material is aluminum, can be stabbed easily by pH meter electrode
It is broken, and pH meter electrode will not be damaged to;
One face toughness of the air exclusion film, can be easily attached to the rim of a cup of the Special beaker, seal up described
Special beaker will not fall off.
Compared with prior art the beneficial effects of the present invention are:
It can guarantee in pH value measurement process, beaker possesses good leakproofness, extract liquor and air exclusion in beaker;
Optimize traditional detection process, avoids traditional detection in the process since sample excessively extracts, the sample pH value test error of generation;It protects
Extract liquor will not contact for a long time with air in card pH value measurement process, avoid traditional detection in the process due to extract liquor long-time
It exposes in air, the sample pH value test error of generation.
Detailed description of the invention
Fig. 1 is that a kind of pH value of fabrics of the utility model tests dedicated extract liquor beaker structural schematic diagram;
Fig. 2 is the structural representation that a kind of pH value of fabrics of the utility model tests dedicated extract liquor beaker air exclusion film
Figure.
Specific embodiment
The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that,
These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function
Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.
Join Fig. 1, shown in 2, present embodiments provides a kind of pH value of fabrics and test dedicated extract liquor beaker, including dedicated burning
Cup 1, air exclusion film 2,1 diameter of Special beaker are 50mm, volume 100ml;2 diameter of air exclusion film is 60mm, with a thickness of
0.05mm;Material is aluminum, can be poked easily by pH meter electrode, and will not be damaged to pH meter electrode;One face toughness of film, can
It is easily attached to the rim of a cup of Special beaker 1, Special beaker 1 is sealed up, will not fall off.
PH value of fabrics provided in this embodiment tests dedicated extract liquor beaker device, applies in pH value measurement process
When,
The first step first pours into the extract liquor in conical flask after oscillation in Special beaker, then will be burnt with air exclusion film
Cup rim of a cup seals;
Second step repeats first step operation, until the extract liquor after all oscillations in conical flask is all down to each beaker
In, and beaker rim of a cup is sealed by air exclusion film;
PH meter electrode is poked air exclusion film, is immersed in the extract liquor in beaker by third step, stirs sample, works as pH
After counting stable reading, reading is obtained;
4th step repeats third step operation, successively tests the sample in each sealed beaker.
Dedicated extract liquor beaker is tested by the pH value of fabrics, can be guaranteed in pH value measurement process, beaker possesses good
Good leakproofness, extract liquor and air exclusion in beaker;Optimize traditional detection process, avoids traditional detection in the process due to examination
Sample excessively extracts, the sample pH value test error of generation;Guarantee that extract liquor will not connect for a long time with air in pH value measurement process
Touching avoids traditional detection in the process since extract liquor exposes in air for a long time, the sample pH value test error of generation.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.