78 results about "Weighing bottle" patented technology

The invention provides a rubber film separant. The rubber film separant is prepared from raw materials in parts by weight as follows: 10-40 parts of calcium stearate, 20-50 parts of inorganic filler, 5-20 parts of a surfactant, 1-10 parts of inorganic gel, 1-10 parts of hydroxymethyl cellulose and 1-10 parts of a defoaming agent. The rubber film separant is white or off-white fine powder, the PH value of a 2% aqueous dispersion is 8-10, and the solid content is calculated in the following steps: a sample in the weight of 2 g (accurate to 0.01 g) is taken from a low weighing bottle with a decrement method, and the weighing bottle with the opening open is put into an oven at the temperature of 105 DEG C and baked for 2 h, then taken out, put into a dryer to be cooled for 30 min and then weighed. The percent of remaining of the rubber film separant is higher than 80%, the dispersity is good in cold water or hot water in the concentration being 2%-6% at the temperature of 10-90 DEG C, the rubber film separant does not settle after being dissolved or diluted in water, no cakes are left on the surface of a rubber film, so that smooth progressing of following compositing is guaranteed, and the rubber film separant which guarantees non-viscosity and increases the cooling and drying speed of the rubber film can uniformly cover the surface of the rubber film.

The invention discloses an analytical chemistry instrument, in particular to a peristaltic pump type weighing titrator and a titration method thereof. The titrator comprises a titration unit, a measure and control unit and a weighing bottle. The titration unit comprises a titration tank, a peristaltic pump and capillaries, and an inlet and an outlet of the peristaltic pump are respectively communicated with the weighing bottle and the titration tank through the capillaries. An electrode is installed in the titration tank, an electric signal input end of the measure and control unit is connected with the electrode in the titration tank, and a control output end of the measure and control unit is connected with the peristaltic pump. The peristaltic pump type weighing titrator drives titrating solution through the peristaltic pump, determines titration progress through changes of electrode potentials measured by the measure and control unit, controls the peristaltic pump, acquires mass of the titrating solution through a weighing method, and accordingly improves titration accuracy. Simultaneously, the peristaltic pump type weighing titrator is simple in structure, convenient to use and low in cost, and a titration pipeline is small in volume, so that washing is facilitated.

The invention provides a method for restoring a silver ammonia solution with ultraviolet light to prepare water-soluble silver nano-clusters. The method includes: adding an AgNO3 solution to a reaction vessel, slowly adding a NaOH solution to the vessel in oscillation, after sediment is generated, dropwise adding NH3.H2O to the vessel in oscillation till the sediment is fully dissolved, and adding redistilled water to prepare a silver ammonia stock solution with the concentration of 5.0*10<-3>M; dropwise adding carboxymethyl dextran to a weighing bottle, adding the silver ammonia stock solution in stirring, adding secondary water till volume of the solution reaches 5 to 10 times of that of the carboxymethyl dextran, stirring the solution with a magnetic stirrer for 5 to 10 minutes, and placing the solution in an exposure manner at the normal temperature under an ultraviolet lamp prior to stirring while light the solution for 2 to 4 hours. The carboxymethyl dextran is taken as a stabilizer and a reducing agent, and the water-soluble silver nano-clusters can be synthesized from the silver ammonia solution under irradiation of the ultraviolet light.

The invention provides a filtering method for suspended matters in water. The method comprises the following steps: clamping a microfiltration membrane with a pair of tweezers, putting the microfiltration membrane into a constant-weight weighing bottle, transferring the microfiltration membrane to a baking oven for drying, then cooling the microfiltration membrane to room temperature, weighing the weight of the microfiltration membrane and carrying out repeated drying, cooling and weighing until the difference between weight values obtained in two weighing is less than 0.2 mg; correctly putting the obtained microfiltration membrane with a constant weight on the filter membrane pallet of a filter membrane filter, covering a matching funnel, fixing the funnel with a clip, wetting the microfiltration membrane with distilled water and carrying out continuous suction filtration; and weighing a sample for suction filtration, continuously washing the sample with distilled water three times, continuing suction filtration to remove a trace amount of moisture, taking the microfiltration membrane out, putting the microfiltration membrane in the original constant-weight weighing bottle, transferring the microfiltration membrane to the baking oven for drying, then transferring the microfiltration membrane into a drier, then cooling the microfiltration membrane to room temperature, weighing the weight of the microfiltration membrane and carrying out repeated drying, cooling and weighing until the difference between weight values obtained in two weighing is less than 0.4 mg. According to the invention, primary drying time is prolonged, drying frequency is reduced, time for drying is shortened, and work efficiency is improved.

The invention provides a method for evaluating the content of retained hydrocarbons in shale by using chloroform bitumen A. The method comprises: step 1, selecting and weighing a crude oil sample of a certain quality; step 2, adding chloroform to the crude oil sample and dissolving it into a mixed solution ; Step 3, concentrate the mixed solution in a distiller lower than or equal to 85°C; Step 4, transfer the concentrated solution to a weighing bottle with constant weight, and volatilize to dryness at a temperature less than or equal to 40°C ; Step 5, carry out the constant weight of the volatilized crude oil that is contained in the weighing bottle; The amount of crude oil taken above is its light hydrocarbon loss coefficient. The method of using chloroform bitumen A to evaluate the content of retained hydrocarbons in shale can conveniently and quickly express the loss of light hydrocarbons in shale with chloroform bitumen A in shale with similar organic parent material and similar evolution degree, and quantitatively describe the content of retained hydrocarbons in shale.

The invention discloses an additive capable of improving fish meat quality as well as a preparation method and application of the additive. The additive consists of the following raw materials in parts by weight: 1-5 parts of bottle gourd peel, 3-8 parts of haws, 13-18 parts of lotus leaves, and 5-10 parts of glycerine. The preparation method comprises the following steps of weighing the bottle gourd peel, the haws and the lotus leaves, soaking the weighed bottle gourd peel, the weighed haws and the weighed lotus leaves with an ethanol solution so as to obtain a mixture A, wherein the soaking time is 5-6 hours; boiling over the mixture A, decocting the boiled mixture A for 3.5-4 hours, and adding water which is 4-6 times as much as the total weight of the bottle gourd peel, the haws and the lotus leaves, decocting the water and the mixture A for 4-4.5 hours, and filtering the decocted mixture A so as to obtain filtrate; adding the glycerine to the filtrate, decocting the filtrate and the glycerine once again until the water is drained in the boiling manner, and drying the decocted filtrate and the decocted glycerine in shade so as to obtain the additive. According to the additive as well as the preparation method and the application thereof, disclosed by the invention, the content of fish muscle calcium can be increased, the cooking loss of muscle is reduced, the chewy degree of fish meat is increased, the pH value of the muscle after being refrigerated for 24 hours is increased, and the mouth feel of the fish meat is improved; the growth and the development of fish can also be promoted, and the feed utilization efficiency is improved. The additive as well as the preparation method and the application thereof have the advantages that materials are wide to take; the additive is simple to prepare, convenient to use, low in cost, non-toxic and safe, and industrialized production is facilitated.

The invention relates to a high-accuracy testing method of oil content of polyester staple fibers. The method is characterized in that with the adoption of an optimized extraction method, an extraction oil agent transferring step is added, an oil agent in a distillation flask in an original extraction method is transferred to a weighing bottle, drying and weighing are performed after evaporation in a water bath, the absolute dry weight of residues is calculated, and the influence of environmental temperature and humidity changes on the oil content testing result is reduced to the lower level. With the adoption of the transferring extraction method, the oil content of the polyester staple fibers can be accurately detected; compared with an original method, the testing accuracy of the method is greatly improved.

An all-solid-state lithium battery composite positive electrode and a preparation method thereof belong to the technical field of a lithium ion battery. The composite positive electrode is prepared from lithium titanate, vapor-phase growth carbon fiber VGCFs and a binary sulfide electrolyte LPSCI according to a mass ratio being (1-5):(1-5):1. The method comprises the following steps of (1) taking10-100mL of 200# gasoline in a weighting bottle, weighing and adding lithium titanate powder, VGCFs and the LPSCI electrolyte in an amount of 10-50g according to a mass ratio into the weighing bottle,and performing mixing and stirring for 12-24 hours; (2) drying the obtained mixed solution to obtain Li4Ti5O12 and Li6PS5Cl mixed powder, wherein the temperature is 50-100 DEG C, the time is 10-24 hours, and the drying atmosphere is argon atmosphere; and (3) pressing the obtained mixed powder to form a ceramic sheet per 1-30mg, thereby obtaining the composite positive electrode, wherein the pressing pressure is 100-550MPa, and the pressing time is 1-60 minutes. The preparation method has the advantages of simplicity and low cost, and the obtained composite positive electrode material is relatively good in particle uniformity, relatively high in lithium ion conductivity and excellent in electrochemical performance.

The invention discloses a method for measuring modified acrylic and acrylic blended fabric fiber contents. The method comprises the following steps of (1) taking all samples, then splitting the samples into a yarn shape, placing in a weighing bottle, drying and cooling, and then weighing to obtain dry mass m0 of the samples; (2) putting the weighed samples into a conical flask, adding a solution,plugging a glass stopper, shaking the flask to fully wet the samples, placing the flask in a constant temperature oscillating water bath kettle, and carrying out continuous violent oscillation; (3) pouring the dissolved samples into a glass sand core crucible, carrying out vacuum suction and liquid drainage, cleaning and then carrying out vacuum suction, finally, drying the crucible and residues,cooling, and weighing to obtain the mass m1 of the residues, and calculating and acquiring a mass percentage P of modified acrylic fibers, wherein the P satisfies the following formula: P=100%-m1*d*100%/m0. By using the method for measuring the modified acrylic and acrylic blended fabric fiber contents, the measuring method is rapid and convenient, cost is low and a measured result is real and accurate.

The invention discloses a micro flow and ultrafine flow measuring device, which comprises a vacuum degasser, a to-be-measured infusion pump, a pressure sensor, and a damper tube.A high pressure electric switching valve communicates withthe damper tube, a high precision timer, a waste liquid bottle, and a precision injection needle correspondingly; the precision injection needle goes deep into a weighing bottle; the weighing bottle is placed on a precision electronic balance, a to-be-tested liquid (pure water) is placed inside the weighing bottle and sealed with liquid paraffin; the precision electronic balance is placed on a highly stable weighing platform. According to the micro flow and ultrafine flow measuring device, the problems of accuracy and precision of micro flow and ultrafine flow measurement are solved, a means for eliminating air bubbles by the vacuum degasser and the damper tube is introduced, and the highpressure electric switching valve is controlled to switch flow paths through a switch of the highprecision timer, and the influences brought by liquid level rise and buoyancy variationare calculated and subtracted so thatflow rate can be accurately measured. The micro flow and ultrafine flow measuring device has the advantages thatthe measurement is simple and rapid, and the measurement result is accurate and reliable.

A measuring method for an encapsulating agent in porous granular ammonium nitrate includes the steps as follows: dissolving a sample in water; still standing the solution and forming layered oil and water; abandoning the water layer; transferring the oil layer through acetone or cyclohexane into a constant-weight weighing bottle; volatilizing almost all the acetone or cyclohexane, and drying the weighing bottle to reach a constant weight; and calculating the mass percentage content of the encapsulating agent in the porous granular ammonium nitrate. The method provided by the invention is simple to operate, has a high detection speed, and realizes the batch processing of samples.

The invention discloses a test method for the physical property of a viscose colourant, comprising the following steps: calculating the percentage composition of the solid colourant; weighing a certain amount of the colourant and adding a certain volume of demineralized water, collocating the diluted colourant and homogeneously stirring and mixing the colourant for standby; putting a microporous filtering film in the weighing bottle and roasting with the weighing bottle in the oven until the weight is constant, and recording the weight of the microporous filtering film and then weighing the bottle; measuring the filtering time of the colour paste and calculating the percentage of the residue filtered by the colourant. The production of the coloured thread with good quality is guaranteed by using the present invention.

The invention discloses a method used for determining water content of capsule shell. The method comprises following steps: (1) substances in soft capsules is removed using a suction part so as to obtain soft capsule shell; (2) the soft capsule shell is cut open with a knife, and residue substances on the inner and the outer surfaces of the soft capsule shell are moved with a solvent; (3) precision weighing of a soft capsule shell sample with a certain weight is carried out, the soft capsule shell sample is delivered into a platode weighing bottle which is dried to constant weight, and then the platode weighing bottle together with the sample are dried to constant weight, and drying loss rate, i.e. water content of the soft capsule sample, is calculated according to drying loss and the weight of the soft capsule shell, wherein drying temperature is controlled to be 115 DEG C. According to the method, direct cutting of the soft capsule shell, which may lead to leakage of the substances in the soft capsule and sticking of the substances onto laboratory coat or arms of operators, in the prior art is abundant; the substances in the soft capsules is removed via suction firstly, and then water content of the capsule shell is determined; design is reasonable and artful, and simple and effective; operation is simple; working efficiency can be increased effectively; and rapid determination of water content of the capsule shell can be realized.

The present invention relates to a method for preparing a polystyrene-multi-walled carbon nano-tube composite material through a solution blending aqueous solution film forming method. The preparation method comprises: 1, adding a certain amount of polystyrene, various functionalized multi-walled carbon nano-tubes and a surfactant triton into a weighing bottle filled with a certain amount of tetrahydrofuran, placing onto a magnetic roton stirrer, and carrying out mechanical stirring until the polystyrene is completely dissolved and the multi-walled carbon nano-tubes are uniformly dispersed; 2, carrying out an ultrasonic treatment, wherein the dissolved and dispersed composite material solution is subjected to an ultrasonic treatment for a certain time until the carbon nano-tubes are further completely and uniformly dispersed; and 3, forming a film, wherein the composite material solution is poured into a particular container to form a film, and after a certain time, the container is placed into deionized water to completely form the film. The method of the present invention has advantages of simple process, low energy consumption, high film forming efficiency, less pollution, and the like.

The invention relates to a liquid phase chromatography analysis method for the active ingredient content of a crude product M. The method comprises the following steps of: weighing crude MBT (2-Mercaptobenzothiazole) with a weighing bottle, preparing a 0.1-0.5 mg/mL sample with a chromatographically pure methanol solution, and putting the sample into an ultrasonic cleaner for oscillating for 2-20 minutes; filtering the sample solution with 0.2 mum of filtering film before sampling; keeping the column temperature at 20-30 DEG C, wherein a liquid phase chromatogram is a VWD (Variable Wavelength Detector), the model of the chromatogram column is EXETEND-C18, and water and methanol are taken as a flowing phase of the liquid phase chromatogram; and injecting 5 mu l of sample into liquid phase chromatogram with a trace sampler, wherein the gradient process is that: when the sampling time is 0 minute, the ratio of water in the flowing phase is 90 percent while the ratio of methanol is 10 percent; when the sampling time is 15 minutes, the ratio of the water in the flowing phase is gradually decreased to 30 percent while the ratio of the methanol is 70 percent; when the sampling time is 22 minutes, the ratio of the water in the flowing phase is 0 percent while the ratio of the methanol is 100 percent; and when sampling time is 30 minutes, the ratio of the water in the flowing phase is increased gradually to 90 percent while the ratio of the methanol is 10 percent. Under the analyzing condition, each active ingredient can be effectively separated.

The invention discloses a method based on improving the measurement efficiency of moisture content in coal. A drying box, a drier, a glass weighing bottle and an analytical balance are selected; 1 ± 0.1g air-dried coal sample, spread it in a weighing bottle, open the weighing bottle cap, put it into a drying oven that has been heated to 105-110°C in advance, and keep the air blowing , dry the bituminous coal for 1 hour, and dry the anthracite for 1 to 1.5 hours. Put the weighing bottle containing the coal sample into the desiccator to cool to room temperature, and then weigh it; take the weighing bottle out of the drying box, and immediately cover it. After cooling to room temperature in a desiccator, weigh and carry out inspection drying, each time for 30 minutes, until the mass reduction of two consecutive dried coal samples does not exceed 0.001g or the mass increases; calculate the results. The method has simple and convenient steps, high efficiency and high detection accuracy, and can ensure that the coal achieves the expected target during subsequent use.

The invention discloses a liquid chromatographic method of a thiofide MBTS, which comprises the steps as follows: 10 to 100mg of MBTS samples are weighed with a high angle weighing bottle, and methylene dichloride of 5 to 200ml is added in, wherein, the concentration of methylene dichloride is 95 to 99 percent; the mixed liquid is put in a supersonic cleaner and is oscillated for 2 to 20 minutes, then is taken out and transferred to a volumetric flask whose volume capacity ranges from 100 to 1000ml, and is shook up and filtered after being diluted to reach the scale by using methylene dichloride whose concentration is 95 to 99 percent; and the room temperature is kept from 20 to 30 DEG C, a liquid chromatogram takes water and methanol as a mobile phase, the flow rate is 0.5 to 5.0ml/min, the wavelength of a UV detector ranges from 100 to 500nm, samples of 10 to 50 mul are injected to the liquid chromatogram through a trace sample injector, the purity quotient of the samples MBTS is obtained after 10 to 50 minutes, and the precision error is within 0.2 percent. The liquid chromatographic method has the advantages of simple process, high accuracy rate of analysis results and small errors.

The invention discloses a method for efficiently and accurately detecting the content of silicon dioxide and aluminum oxide in glass. The method comprises the following steps: A, adding to-be-detected glass powder into a weighing bottle, and drying the glass powder in a drying box; B, weighing the same amount of dried glass powder into a group of platinum crucibles, adding diluted hydrochloric acid, heating till each solution is slightly boiling, filtering, firing each solution with filter paper until obtained residual filtrate reaches constant weight, weighing and recording the mass as m0; C, heating and leaching each residual filtrate with diluted hydrofluoric acid, filtering, firing each filtrate with filter paper until an obtained aluminum oxide residue reaches constant weight, weighing, recording the mass as m1, calculating the content of aluminum oxide according to the difference between m1 and the mass of each crucible, and taking the average value of the values obtained be measuring the samples of the platinum crucibles as the final content value of aluminum oxide; and D, taking the average value of the values obtained by measuring the samples of the platinum crucibles as the final content value of silicon oxide according to the difference between m0 and m1 weighed twice. According to the method disclosed by the invention, the relative deviation is small, and the detection result is real and reliable; and moreover, the reliability of the detection result obtained by the method disclosed by the invention is higher than that of a detection result obtained by a traditional method.