58 results about "Litmus" patented technology

A composition includes microstructured water having an increased pH compared to unstructured water. The composition may include dissolved oxygen. The dissolved oxygen may be present in an amount greater than 20 ppm. The microstructured water may have a cluster size of 6-8 molecules, and may have a cluster factor of about at least 30. The microstructured water may have a pH of at least 7.2 when using litmus paper and a pH of at least 8.4 when measured using a pH meter. The composition may include at least one member selected from the group consisting of vitamins, plant extracts, animal extracts, pharmaceutically active agents, flavorants and colorants.

The method of the present invention to re-factor, rationalize, and prioritize a service model and to assess service exposure in the service model is illustrated. To be dedicated to every client's success means, in this context, to be sure we are building the right service portfolio for the client that has the highest relevance to what they do, what their objectives are, and what they aspire to achieve. Therefore, we need to periodically pause and review the service model as it stands, infant or mature, and validate its relevance from a client's perspective. This process is called rationalizing the service model (or portfolio). This review can lead to changes (called re-factoring) in the service model due to a re-prioritization. Some services will become more important, others will sink in priority. Thus, the method of the present invention is called service re-factoring and rationalization (SRR). The service model is reviewed and re-factored and the service portfolio and service hierarchy are refined, exposure decisions are made, and finally the service model and its constituent parts are rationalized based on the re-factoring and exposure decisions. Another technique called Service Litmus Tests (SLTs) is leveraged during service re-factoring and rationalization. SLTs are set of gating criteria to select and filter a set of (candidate) services from the service portfolio for exposure. A Service Exposure Assessment Toolkit (SEAT) is also presented in the present invention. SEAT is a mathematical model to facilitate making exposure decisions for services and prioritizing the services in the service model.

The invention provides a method for inspecting gas tightness of argon pipelines of a molten steel tank, which is simple, can effectively solve the problems that the existing air pressure test or hydrostatic test is not accurate and can reduce the equipment cost. The method can be realized by the following technical scheme: pressure gas or pressure water is introduced in the argon pipeline of the molten steel tank; the method is characterized in that before the pressure gas or the pressure water is introduced in the argon pipeline of the molten steel tank, purple litmus reagent is coated at a to-be-detected part of the argon pipeline of the molten steel tank, wherein the pressure gas is CO2 gas and the pressure water is acid pressure water, and if the purple litmus reagent of the detection part of the pipeline goes red, the result indicates that the gas tightness of the detection part is poor.

The invention relates to a method for extracting eugenol in velvety lilac flower leaves, comprising the following steps of: firstly, cleaning and drying the velvety lilac flower leaves, sieving by a 40-mesh sieve after crushing the velvety lilac flower leaves by a crusher, and obtaining velvety lilac flower powder; secondly, putting the sieved velvety lilac flower powder into an extraction tank with the extraction temperature of 30-50 DEG C, the extraction pressure of 10-20 MPa, the carbon dioxide flow of 10-50L / h and the extraction time of 50-100min, and obtaining an extraction liquid A; and thirdly, obtaining an extraction liquid B by extracting the extraction liquid A by an NaOH solution 3 times, obtaining an extraction liquid C by extracting the extraction liquid B by ether 3 times after acidizing the extraction liquid B to show acid property on blue litmus paper by chlorhydric acid; drying by anhydrous sodium sulfate, and recovering the ether to obtain a light yellow oily liquid, i.e. the eugenol. An extraction solvent used in the preparation method has the advantages of wide sources, low cost, high extraction ratio, low cost, simple operation, short extraction time, high extraction efficiency and no solvent residues.

Belonging to the field of traditional Chinese medicines, the invention discloses a drug for treatment of migraine. The drug provided by the invention comprises the following effective raw material components: Clerodendrum japonicum leaves, Parthenocissus tricuspidata, wild opium poppies, pomelo leaves, litmus, roots of Dentiferous Dendropanax, Cynanchum amplexicaule, Orixa japonica, crape myrtle roots, Astilbe chinensis, Piper longum, Hydrocotyle vulgaris, ergot, fructus viticis, radix clematidis and Korean Mondshood Roots. The drug provided by the invention has the efficacy of nourishing liver and dispelling wind, activating blood circulation and inducing resuscitation. Compared with other similar drugs, the drug provided by the invention has the characteristics of precise compatibility, mild drug properties and obvious curative effect, can rapidly ease migraine symptoms, dredge qi, blood and venations of lesions, promote vasodilatation, regulate the body mechanism, excite the inner analgesic system, relieve vasospasm, inhibit platelet aggregation and blood vessel substance release, thus curing diseases. The drug for treatment of migraine has the characteristics of good curative effect, quick effect, no toxic or side effect, convenient taking, easy absorption, low cost, treatment of both symptoms and root causes, and hard recurrence after cure.

The invention provides a method for identifying male and female plants of populus tomentosa seedlings. Identification is carried out mainly aiming at the seedling stage of male and female plants of populus tomentosa seedlings in urban garden greening. Various conditions required for preliminary identification of the male and female plants of the populus tomentosa seedlings are ensured by preparing a phosphate buffer solution, utilizing chromogenic reaction of a litmus test solution, and proper treatment at the seedling stage. An effective method, which can be applied in large area in production practice of urban garden greening, can solve the problem for identifying the male and female plants of the populus tomentosa seedlings, is simple and convenient to operate, and high in accuracy rate, shortens the identification time and saves the cost is provided by the steps of grinding, leaching and centrifuging the male and female plants of the populus tomentosa seedlings.

The invention discloses a test bed device and a method for testing a fertilizer pesticide injection and dispersion mechanism, belongs to the field of fertilizer pesticide injection and dispersion and solves the problems of an existing fertilizer pesticide injection and dispersion mechanism research. The device is composed of a test bed, a soil box, a soil groove, an injection part and a sampling part, wherein the soil box, the injection part and the sampling part are sequentially and fixedly arranged on the test bed respectively. The method comprises the following steps: firstly, treating test soil by litmus; then, judging the potential of hydrogen of soil according to colors of the litmus on different soil layers to determine the concentration of a fertilizer pesticide in the soil; then determining an isoconcentration curve to realize the quantitative analysis of fertilizer pesticide injection; and finally, estimating an injection and dispersion effect of the fertilizer pesticide according to an intrinsic dispersion model. The invention provides the test bed device and the method for testing the fertilizer pesticide injection and dispersion mechanism; firstly, the quantitative research is carried out on the inner injection and dispersion of the soil; a concentration contour line parameter is used for evaluating a dispersion effect.

The invention discloses a method for measuring liquid-absorbing rate and liquid-absorbing volume of a lithium ion battery pole piece. The method comprises the following steps: marking white lines on the positions h1 and h2 on a pole piece and dropping several drops of purple litmus test liquid onto the white lines, and meanwhile, weighting the pole piece; placing the pole piece into a certain amount of electrolyte; starting to keep timing at the moment of inserting the pole piece into the electrolyte, wherein one place marked with the white line on the pole piece is aligned with the liquid level of the electrolyte and the electrolyte rises along the pole piece; immediately stopping timing and taking out the pole piece when the white line becomes red (for the reason that the purple litmus test liquid becomes red while meeting the electrolyte) at the moment that the electrolyte reaches h2; weighting the pole piece, wherein the bigger the change on the weight of the pole piece is, the better the liquid-absorbing performance of the pole piece is.

The invention discloses a microbial time-temperature indicator, which comprises a reaction reagent and a temperature-time indication contrast card. The reaction reagent includes: a Lactobacillus bulgaricus and Streptococcus thermophilus mixed activated bacterial solution, a litmus indicating agent or a bromocresol purple indicating agent, and an 8% skimmed milk medium, and a mixture of the materials is injected into a transparent glass tube to be sealed and stored. The temperature-time indication contrast card sets the corresponding relations of time and color under a fixed temperature. According to the invention, only a reducing substance generated by growth and propagation of Lactobacillus bulgaricus and Streptococcus thermophilus under certain temperature is employed to make the litmus indicating agent or the bromocresol purple indicating agent gradually reduced and faded, then whether food is out of a prescribed transportation or storage temperature in a cold chain circulation process can be judged according to the color by referencing to the temperature-time indication contrast card, so that the food quality in the cold chain circulation process can be reflected visually.

The invention discloses a device for quickly positioning a tracheal vessel by a colorimetric method, which comprises a breather pipe, an insert wall structure, a slot structure and a colorimetric wafer; the insert wall structure and the slot structure are in insert connection to form an integral tubular structure; the colorimetric wafer is formed by fixing two nylon meshes on an circular outer ring, and tissue paper dyed by blue lacmus solution is arranged between the two nylon meshes; and when the insert wall structure and the slot structure are in insert connection to form the integral tubular structure, circular objects protruding on the inner walls of the insert wall structure and the slot structure press against the colorimetric wafer to fix the colorimetric wafer. After an emergent tracheal vessel operation is carried out, the breather pipe is connected with the tracheal vessel and the like, and that whether the tracheal vessel is positioned in the trachea can be judged by utilizing a principle that the moist tissue paper after contacting carbon dioxide breathed out becomes red. The device has the advantages of low cost, simple and convenient operation, capacity of saving precious time for rescuing the patient during cardiopulmonary resuscitation, and wide application range.

The invention relates to the field of composting, in particular to a composting conditioner and a preparation method thereof. The raw materials of the composting conditioner comprises calcium superphosphate, 3,4-dimethylpyrazole phosphate, Bacillus licheniformis, calcium carbonate, borax, silicon dioxide, iron phosphate, urea, starch, vegetable gum and water, and the preparation method comprises the steps: (1) grinding silicon dioxide, (2) stirring calcium superphosphate, starch and urea, (3) preparing a composting agent mixture, (4) preparing a compost ball, (5) adding red litmus paper and (6) performing air drying. The problems that since an existing composting agent has no accurate metric standards for when addition is performed, waste is often caused by excessive addition of the composting agent, or the loss of nitrogen is caused by insufficient addition of the composting agent are solved by designing the composting conditioner and the preparation method thereof, and the defects that large dosage of most conditioners and reduction of ammonia gas or nitrogen oxides cannot be achieved, and the fixation rate of nitrogen is only about 50% are overcome.

The invention relates to a gas detection device, in particular to a preliminary qualitative gas detection device for chemical plants. The preliminary qualitative gas detection device for the chemical plants is high in detection precision, simple in structure and capable of accurately judging gas properties. The preliminary qualitative gas detection device for the chemical plants comprises a bottom plate, a box, a motor, a gear, a rack, a connecting rod, a left piston, a baffle, a right piston, a gas inlet pipe, a first valve, a first check valve, a gas outlet pipe and the like, wherein the box, the first detection pipe and the second detection pipe are sequentially arranged at the top of the bottom plate from left to right, and the baffle is arranged in the middle of the top of the box. Gas in the air is detected by a phenolphthalein solution and a litmus solution, either excessive acid gas or alkaline gas discharged from the chemical plant can be judged preliminarily, and accordingly, the follow-up work can be omitted.

The invention discloses a rock soil specimen ammonia gas saturation experiment method, which can realize fast high-efficiency saturation of rock soil specimens and comprises the following steps that adimidiate mold with the diameter being 1.0mm to 1.5mm greater than that of a standard specimen is developed; after the mold folding, a rubber membrane firstly sleeves inside the mold; sample soil bodies tamp the specimen in the mold in a layered way; then, the mold is put into a constant temperature box to be dried; after the specimen drying, the mold and the specimen are put into a sealed container to be vacuumized; then, sufficient ammonia gas is injected; before tri-axial experiment, the mold is put on a base of a tri-axial pressure chamber; the dimidiate mold is taken down; a pressure chamber cover is installed; confining pressure liquid is injected; confining pressure is loaded; the communicating vessel principle is used for performing water head saturation on the specimen; the waterhead difference is maintained to be 19.5cm to 20.6cm; when the water quantity for injecting the specimen is equal to the flowing-out water quantity, the continuous water head saturation is performedfor 30 to 40min; litmus blue test paper is used for sticking and coating flowing-out water until the test paper does not change the color, and the water head saturation stops.

The invention provides a culture medium. The culture medium is prepared from a bacteriostatic agent which is prepared from salt and anthocyanin. The culture medium does not contain antibiotics, the antibiotics is replaced by the anthocyanin to play role of inhibiting miscellaneous bacteria. Meanwhile, the effect of indicators is achieved by ingeniously utilizing the phenomenon that the anthocyaninproduces acid along with lactic acid bacteria to change color, the indicators such as resazurin, bromcresol purple, bromocresol green, litmus, MTT and TTC are avoided, purple potato starch can promote proliferation of bifidobacteria, and then the bifidobacteria can be easily and safely separated out from feces.

The invention provides soap for treating skin itching. The soap is prepared from a soap base, an additive and a functional component, wherein the functional component is formed by extraction of 2-6 parts of rhubarb, 1-3 parts of dried ginger, 5-10 parts of Japanese dock roots, 4-6 parts of lotus leaves, 1-5 parts of lightyellow sophora roots, 4-6 parts of largetrifoliolious bugbane rhizomes, 1-5 parts of litmus, 1-3 parts of sandalwood, 1-3 parts of coptis, 1-3 parts of poisonous eightangle, 1-3 parts of sulphur and 5-10 parts of liquorice; the additive is formed by glycerine accounting for 5%-10% of the weight of the soap base. A preparation method of the soap comprises steps as follows: the functional component is extracted and spray-dried and then mixed with the soap base and glycerine; the mixture is subjected to layering and molding, and the finished soap is obtained. The soap has various functions of skin itching treatment, sterilization, inflammation diminishing, skin moisturizing and caring and the like, and has small stimulation.

The invention discloses a pH value testing liquid with the testing range of 4.6-7.6 and a preparation method of the pH value testing liquid. The invention provides a testing liquid which is convenient in testing, rapid in developing, good in stability and hard to splash and leak, and a preparation method of the testing liquid. The testing liquid comprises the following components by weight percent: 50-60% of an organic solvent, 0.5-3% of a thickening agent, 0.5-1% of an antioxidant, 1-2% of ethoxychrysoidine, 2-3% of litmus, 0.5-1% of bromcresol purple, 0.5-1% of neutral red, 0.2-0.5% of methylene blue and the balance of distilled water. After the testing liquid is used, the gradient change of agent color can be displayed when the accuracy change of the pH value difference which can be observed visually is 0.2; the testing liquid is convenient in testing, rapid in developing, good in stability, hard to splash and leak and low in price, is suitable for the quick test in the pH value change range outside a laboratory, and can be used in the fields of food safety, medicine detection, environmental protection, water quality monitoring, industrial production, criminal assay and the like which need to rapidly and accurately testing the pH value of solution to be tested outside the laboratory.

The invention relates to a drug for treating bladder neoplasm. The drug is prepared from the following raw materials in parts by weight: 4-6 parts of adina, 1-2 parts of fragrant plantain lily flower, 8-10 parts of litmus, 3-5 parts of Debregeasia orientalis, 6-8 parts of water bean paste, 10-18 parts of astragalus root, 6-8 parts of poria, 6-8 parts of gynostemma, 4-6 parts of angelica, 6-8 parts of white peony root, 8-10 parts of honeysuckle, 6-8 parts of rhubarb, 6-10 parts of dodder seed, 4-6 parts of malt, 4-6 parts of dried tangerine peel and 4-6 parts of ophiopogon. The drug has the beneficial effects of good treatment effect, low side effect, low cost, convenience for use and no pain generation, moreover the recurrence rate of bladder neoplasm cured by the drug is low.

The invention discloses a reagent and a test strip for diagnosing bovine subclinical mastitis and a preparation method thereof. The reagent comprises the following components: catechol violet, neutral red, litmus, Nile blue A and alpha-naphtholbenzein. The invention further discloses a diagnostic test strip prepared from the reagent for diagnosing bovine subclinical mastitis and a usage method thereof. The diagnostic test strip provided by the invention has advantages of low cost, convenient usage and high diagnostic accuracy. Clinical diagnostic test results show that the test paper provided by the invention has an accuracy rate higher than 95% on detecting bovine subclinical mastitis, and can be applied to clinical detection of bovine subclinical mastitis.

The invention relates to the technical field of household textile product fabrics, in particular to an intelligent induction discoloring fabric used for household textile products and a preparation method thereof, and solves the problem that whether normal household textile products are cleaned is not easy to determine by observation in the prior art. The fabric is prepared by dyeing a polyester-cotton blended fabric with an intelligent induction dye, and the intelligent induction dye is prepared from, by weight, 2-4 parts of intelligent induction pigment, 3-6 parts of a printing adhesive, and90-95 parts of water, wherein the intelligent induction pigment refers to one or more of litmus, red pigment of red rice, gardenia yellow pigment, alkannin and curcumin. The polyester-cotton blendedfabric is prepared from 90-95 parts by weight of cotton fiber and 5-10 parts by weight of polyester fiber. The preparation process of the fabric is simple, the price of the raw materials is low, the fabric is suitable for the household textile products, when the fabric is contaminated by a large amount of acid sweat, grease and other substances, users can be reminded to clean the fabric in time and keep the home textile products clean.

The invention discloses a plant photosynthesis teaching experiment method. The method comprises the following steps: a, marking experiment containers: marking three experiment containers with the samespecification; b, weighing algae: respectively putting algae with the same weight into two of the marked experiment containers; c, diluting and sub-packaging the solution: dropwise adding clear waterinto the litmus solution to prepare a purple litmus solution; subpackaging the purple litmus solution into two parts, wherein one part ofthe purple litmus solution is directly sealed, carbon dioxidegas is introduced into the other part of the purple litmus solution, and gas introduction is stopped and sealing is conducted after the purple litmus solution becomes a red solution; d, injecting a litmus solution, namely fully injecting a directly sealed purple litmus solution into one of the experimental containers in which the algae are put; filling the other two marked experiment containers with a red solution; and e, illumination: placing the three marked experiment containers under a fluorescent lamp for illumination. The method provided by the invention has the characteristics of simpleexperimental device and steps, less reagent use, good air tightness, obvious experimental phenomenon, environmental protection and good safety.

The invention relates to an MDEA adsorption acid gas detection device. The device comprises a body, a front end surface of the body is connected with a button, one side of the button is provided witha display screen, the top of the display screen is connected with a detection tube, the outer wall of the detection tube is provided with a sleeve plate, and the sleeve plate is internally provided with a test mechanism. By arranging the test mechanism, under an elastic action of a torsional spring, litmus test paper is clamped by a clamping plate through a movable shaft, and is fixed in a detection pipe through a connecting plate, and a piston moves in an empty cylinder by extruding a T-shaped rod so that water is discharged from a water outlet pipe to moisten the test paper; and a user can detect a gas in the detection pipe through the wet litmus test paper, through the arrangement, the user can rapidly and accurately detect the gas in the detection pipe through the litmus test paper, the test paper is fixed in the detection pipe, and the real-time performance and the accuracy of a detection result are ensured.

The invention provides a pickling passivation process. According to the technical scheme, the pickling passivation process comprises the following steps of: immersing equipment into a pickling tank at room temperature, uniformly coating pickling paste on the equipment, stopping for 30 minutes, and then lightly brushing by using clean water or a stainless steel wire brush till uniform white acid etching smoothness appears; placing the pickled equipment into a passivation tank at room temperature, uniformly coating on the surface of the equipment by using the passivation paste, and inspecting after 30 minutes till a uniform passive film is generated on the surface; placing the passivated equipment into a cleaning tank for flushing, then testing any position of a flushing surface by using an acidic litmus test paper so that a pH value is between 6.5 and 7.5, and then wiping or blow-drying by using compressed air. The method provided by the invention is reasonable, practical and easy to operate, can be used for greatly enhancing the corrosion-resistant property of various equipment, reducing the cost and improving the production efficiency and the economic benefit and is suitable for being generally popularized and used.

The invention discloses dual-target dsRNA (double-strand Ribonucleic Acid) as well as a synthetic method and application thereof. The synthetic method is characterized by amplifying an MAPK (Mitogen-activated Protein Kinase) gene segment by taking cDNA (complementary Deoxyribonucleic Acid) of bursaphelenchus xylophilus as a template and MK-28i-R and MK-28i-F as primers, amplifying an RAS gene segment by taking RAS-28i-F and RAS-28i-R as primers, respectively connecting MAPK and RAS between dual T7 promoters of a vector LITMUS-28i through enzyme digestion and ligation, and constructing a recombinant vector LITMUS-28i-RAS-MAPK; then carrying out PCR (Polymerase Chain Reaction) amplification by using the recombinant vector as a template and T7 as a primer; synthesizing RAS-MAPK-dsRNA by taking a PCR amplification product as a template under the catalytic action of T7 RNA polymerase. The RAS-MAPK-dsRNA synthesized by the invention has a good prevention and control effect on the bursaphelenchus xylophilus, is environmentally friendly, convenient and quick, and has wide application value.

The invention discloses a medicine for anesthesia and analgesia and a preparation method, and belongs to the field of traditional Chinese medicines. Effective components of the medicine include psychotria serpens, liquorice, cynanchum paniculatum, jujubes, ford nervilia leaves, litmus, Chinese fevervine herbs, passion flowers, melastoma sanguineum, conic gymnadenia tuber, filifolium sibiricum, chestnuts, ligusticum brachylobum, semen brassica, clove and giant corydalis. Medicinal materials of the medicine are compatible and suitable, complement each other, have the functions of clearing heat, removing toxicity, alleviating pain, calming nerves, relieving spasm and pain, tonifying kidney and spleen, regulating qi and blood condition, resisting bacteria and inflammation and the like by combination, and can directly reach an anesthetic portion by combination. The medicine has the advantages of remarkable anesthesia and analgesia effects, fast effect, safety, convenience and no toxic and side effects in clinical surgical treatment, is inexpensive and easy to prepare and is an ideal local anesthesia product.

The invention discloses a paper diaper for detecting urinary tract health of a baby. The paper diaper mainly comprises a paper diaper main body and a detection reaction layer, wherein the paper diapermain body comprises a skin-friendly layer, an absorbent core layer and a surface layer which are arranged sequentially from inside to outside; the detection reaction layer is embedded in the absorbent core layer; the detection reaction layer comprises a water bag, a piece of litmus red test paper, a piece of PH test paper, capillary lines, ammonia tubes and a pull lug, wherein the water bag is attached to the litmus red test paper and the pull lug; the litmus red test paper is connected to one end of the ammonia tubes and the PH test paper; the other ends of the ammonia tubes are arranged inthe absorbent core layer; the capillary lines are stuck at one end of the PH test paper; the water bag, the litmus red test paper and the PH test paper in the detection reaction layer can be observedfrom the outre side of the paper diaper main body; and one end of the pull lug is exposed out of the paper diaper main body. According to the paper diaper provided by the invention, a urinary tract health status of the baby can be detected through changes in colors of the PH test paper and the litmus red test paper.

The invention discloses a salinity detection device for cooking and a manufacturing method of the salinity detection device. The salinity detection device comprises an arch-bridge-shaped siphon arranged on the left side, a liquid supplementation opening formed in the top, an air delivering hole formed in the right side, a glass ware body, a sealing plug matched with the liquid supplementation opening, a light reflecting detection device matched with the functional fluid container, and a control detection center matched with the light reflecting detection device, wherein a functional fluid container containing an aqueous solution with 2% of silver nitrate and 1% of litmus is arranged at the bottom of the glass ware body; the arch-bridge-shaped siphon is provided with standard scales; a one-way through hole is formed in the upper portion of the functional fluid container; a flow discharge hole matched with the sealing plug is formed in the bottom of the functional fluid container; and the control detection center internally comprises a power supply and an analysis memory chip, and is connected with a transmitting structure and a receiving structure of the light reflecting detection device. The salinity detection device is convenient to use, low in cost, wide in application, high in cost performance, reusable, easy to maintain and long in service life.

The invention relates to the technical field of glass, in particular to recyclable mildewproof powder for glass and a preparation method of the recyclable mildewproof powder. The mildewproof powder isprepared from skeleton isolation base powder, water glass, hydrochloric acid, boric anhydride, sorbic acid, oxalic acid, litmus and a proper amount of water. Silica gel is taken as a buffer materialand a mildewproof powder support, not only can have certain buffer function during use, but also can absorb water in a first stage of mildew occurrence, and absorbs alkaline matter produced in secondand third stages of mildew, so that mildew of glass is avoided to the great extent; besides, the mildewproof powder contains litmus powder, state of the mildewproof powder can be displayed, accordingly, a worker can know whether the mildewproof powder fails or not or whether the mildewproof powder is unused or not conveniently and recovers and replaces the mildewproof powder on the basis, and mildewproof effect and economic benefits are improved.

The invention discloses a method for detecting illegally added ribavirin in a health care product. The method comprises the following steps: a phenolphthalein-ethanol solution, a sodium hydroxide solution, tert-butyl diphenyl chlorosilane, a pyridine aqueous solution, a catalyst DMAP aqueous solution, chloroform, a hydrochloric acid solution and excessive calcium oxide are added into a sample to be detected, wet litmus test paper is used, and whether the sample contains ribavirin is determined according to twice chromogenic reaction. All used reagents are common chemical reagents, the identification method is sensitive to reaction, high in specificity and obvious in phenomena, large instruments are not needed, operation is simple and safe, the cost is lot, and the method is suitable for large-batch onsite rapid detection. The detection limit of illegally added ribavirin in the health care product is 1.0 mg / time.

The invention relates to the technical field of bioengineering, and provides a living creature breeding device for judging breathing by using the change of a purple litmus reagent. The living creaturebreeding device comprises a machine body, wherein the inner wall of the machine body is fixedly connected with a breeding box; and the top of the breeding box is fixedly connected with a photoresistor. According to the living creature breeding device for judging breathing by using the change of the purple litmus reagent, a mouse breathes to generate carbon dioxide, the color of the purple litmusreagent continuously changes, and light rays in contact with the photoresistor continuously change; when a resistance value of the photoresistor reaches a critical value, a threaded sleeve controls anair bag positioned at the left end of a machine to be compressed; a threaded sleeve controls an air bag positioned at the right end of the machine to expand; a threaded sleeve enables a valve close to the center of the machine to be opened to introduce fresh air and suck out unclean air; the threaded sleeves drive sliding blocks to move; the sliding blocks and push plates jointly act to spray chemicals in a chemical box into the air bags; the air is exhausted after being treated in a unified way; and the harm caused by pathogenic bacteria carried by the mouse on the life and health of peopleis avoided.