CN104677904A - Test paper for testing concentration of ortho-phthalaldehyde disinfectant - Google Patents

Abstract

The invention provides test paper for testing the concentration of an ortho-phthalaldehyde disinfectant. The test paper comprises a base plate and a reaction cushion pasted on the base plate, wherein the reaction cushion is obtained by drying filter paper which is dipped in a sulfite solution and a pH mixing indicating agent solution; when the content of ortho-phthalaldehyde is greater than the minimum effective concentration, the pH value of a reaction product completely exceeds the color change point of the mixing indicating agent, the test paper reaction cushion is completely changed into blue purple from yellow, and the higher the concentration of ortho-phthalaldehyde is, the darker the blue purple color on the test paper reaction cushion is. The test paper is rapid and flexible in reaction, is short in color developing time, can be taken out when being dipped into the ortho-phthalaldehyde disinfectant for one second, can analyze the testing result in one minute by referring to a color chart of an operation instruction, is simple, convenient and rapid to use, and is conveniently used for detecting medical instruments, such as an endoscope in the disinfection process any time by medical staff in a hospital.

Description

A kind of o-phthalaldehyde(OPA) thimerosal Concentration Testing test paper

Technical field

The present invention relates to a kind of Test paper, particularly relate to a kind of Concentration Testing test paper of thimerosal.

Background technology

O-phthalaldehyde(OPA) thimerosal is a kind of high level disinfection liquid for scope, various dialysis, breathing, anesthesia equipment and the thermo-labile medicine equipment of other moisture-prooves, when this thimerosal effective constituent o-phthalaldehyde(OPA) content lower than 0.3% time, then do not reach sterilization requirement, must process be discarded, can not use again.But at present, the method that can detect O-phthalic aldehyde has ultraviolet spectrophotometer method, high-efficient liquid phase analysis method and chemical titration etc., this several method all also exists complex operation complexity, time is longer, and the shortcoming that cost is higher, be unsuitable for monitoring use at any time in medical personnel disinfecting process.

Summary of the invention

In order to solve the above problem existed in background technology, the invention provides a kind of o-phthalaldehyde(OPA) thimerosal Concentration Testing test paper, this test paper can demonstrate different colors according to the concentration of o-phthalaldehyde(OPA) in o-phthalaldehyde(OPA) thimerosal, and this test paper is easy to use, and result accurately and reliably.

For achieving the above object, the present invention adopts following technical scheme:

A kind of o-phthalaldehyde(OPA) thimerosal Concentration Testing test paper, comprise base plate and be pasted onto the reacting pad on base plate, it is characterized in that, described reacting pad obtains after the filter paper drying by dipped sulfite solution and pH mixed indicator solution, described sulfite solution is the sodium sulfite solution of concentration 0.5%-10%, and described PH mixed indicator solution is formed after following solution mixes:

The preparation method of described reacting pad is:

1) filter paper is immersed in sodium sulfite solution, makes paper fully absorb to saturated, with 30-50 DEG C of oven dry after taking-up;

2) filter paper after oven dry is immersed in PH mixed indicator solution, fully absorbs to saturated rear taking-up with 30-50 DEG C of oven dry.

The principle of detection paper concentration of the present invention is: when the instruction pad of test paper end is submerged into o-phthalaldehyde(OPA) solution completely, sodium sulphite on instruction pad and o-phthalaldehyde(OPA) generation quantitative reaction, reaction product is the potpourri containing NaOH, product sodium hydroxide can make instruction pad pH value raise, and makes to indicate the color of the upper PH indicator of pad to become alkaline color (bluish violet) from sour look (yellow).O-phthalic aldehyde is higher, and reaction product sodium hydrate content is higher, and instruction pad pH value is higher, and instruction pad will become bluish violet completely and bluish violet can be darker; Otherwise then PH indicates pad can not become bluish violet completely, not even variable color.Adjusted by test of many times, under the effect of the auxiliary agent of certain concentration, when O-phthalic aldehyde is less than 0.3%, test paper reacting pad can not become bluish violet completely, and O-phthalic aldehyde concentration is lower, and the bluish violet on test paper reacting pad can be fewer, not even variable color; When O-phthalic aldehyde is more than or equal to 0.3%, test paper reacting pad becomes bluish violet completely, and O-phthalic aldehyde concentration is higher, and the bluish violet on test paper reacting pad can be darker.

The invention has the beneficial effects as follows: this product is swift in response sensitive, developing time is short, test paper immerses o-phthalaldehyde(OPA) thimerosal 1 and can take out second, instructions colour chart can be consulted and used 1 minute time, resolved detection result, fast easy to use, be convenient to medical personnel and detect use at any time in the medical apparatus sterilizing processes such as scope.

Embodiment

Embodiment 1

1, test paper formula:

Obtain solution A: sodium sulfite aqueous solution 0.5%-10%;

Preparation mixed indicator solution B:

2, test paper method for making:

1), select the filtration test paper body paper being of close texture level and smooth to be cut into the square of about length of side 15 centimetres, put dry for standby in bellows;

2), by the solution A prepared to pour in glass case about, be fully immersed in by paper in A liquid, make paper fully absorb to saturated, take out, then put in bellows and fix with clip, dry, box temperature keeps 30 DEG C-50 DEG C, dries about half an hour, takes out.

3), pour in another glass case by the B liquid prepared, be fully immersed in B liquid by the paper of drying in above-mentioned steps 2, fully absorb to saturated, take out, put in bellows and dry, box temperature keeps 30 DEG C-50 DEG C, dries about half an hour, takes out.

4), cutting, paste.Contaminate uneven and have the place of catcher mark to cut with hand papercutter by the test paper surrounding contaminated, the test paper pruned cuts into 2 centimetres wide rectangular, and PVC base plate cuts into 5 centimetres wide rectangular for subsequent use.By the test paper of 2 cm widths along while paste on the PVC thin base of 5 cm widths, then, the PVC thin plate posting test paper is cut into the test strips that width is 0.8 centimetre, length is 5 centimetres.

5) packing.According to every box packing number, test strips is put into packing box, and test paper pad one end down, is tamping by lid.

Embodiment 2

1, test paper formula:

Obtain solution A: sodium sulfite aqueous solution 0.5%-10%;

Preparation mixed indicator solution B:

Test paper method for making is the same.

The using method of this test paper:

The complete submergence of instruction pad of test paper end is entered in the container of test solution, removes after keeping a second.From solution, take out latter 1 minute at test paper, read the result of instruction pad color reaction.According to the colour chart on test paper bottle, resolve the result of test.

1, when indicating pad to be shown as bluish violet, then prove that OPA solution is more than effective concentration, namely concentration is more than 0.3%.Bluish violet indicates the concentration of OPA solution from low to high from shallow to deep.

If 2 instruction pads become flower, namely bluish violet is thin out tails off, and occur yellow, then the concentration of solution is lower than minimal effective concentration 0.3%, and reply solution processes.

If 3 test papers are shown as yellow, i.e. nondiscolouring, then should by solution-treated.

It will be recognized by those skilled in the art, under the prerequisite not departing from protection scope of the present invention, various amendment, change and combination can be carried out to above-mentioned embodiment, and think that this amendment, change and combination are within the scope of originality thought.

Claims (2)

1. an o-phthalaldehyde(OPA) thimerosal Concentration Testing test paper, comprise base plate and be pasted onto the reacting pad on base plate, it is characterized in that, described reacting pad obtains after the filter paper drying by dipped sulfite solution and pH mixed indicator solution, described sulfite solution is the sodium sulfite solution of concentration 0.5%-10%, and described PH mixed indicator solution is formed after following solution mixes:

2. a kind of o-phthalaldehyde(OPA) thimerosal Concentration Testing test paper as claimed in claim 1, it is characterized in that, the preparation method of described reacting pad is:

1) filter paper is immersed in sodium sulfite solution, makes paper fully absorb to saturated, with 30-50 DEG C of oven dry after taking-up;

2) filter paper after oven dry is immersed in PH mixed indicator solution, fully absorbs to saturated rear taking-up with 30-50 DEG C of oven dry.