Scope Automatic high-temperature high-shear viscosity meter were measured and the apparent viscosity of the lubricant at high temperature and high shear rates, the test principle is at 150 ? test conditions, under nitrogen (carbon dioxide) pressure, the sample from the capillary viscosity meter flow, and pressure from the flow time of the sample, obtained apparent shear rate capillary viscometer reaches a certain apparent viscosity, with each pool viscometer calibration curve corresponding to the measured pressure of the oil viscosity. Features 1, high-temperature high-shear viscosity automatic analyzer for domestic initiative, the key components used by the us cn accessories to ensure product quality; 2, automatic high-temperature high-shear viscosity meter with digital display of pressure and time, more intuitive controllable; 3, high-temperature high-shear viscosity automatic analyzer using flanders dedicated high shear viscosity calculation software prompts, easy to learn; 4, there is a stopcock automatic high temperature and high shear viscosity of each sample tube detector, in line with the standard requirements; 5, automatic high-temperature high-shear viscosity analyzer configured with ftc circuit protection devices, over-temperature automatically cut off power; Technical parameters 1. Applicable standards: astm d5481 sh / t0703 2, heating: electric heating rods 3, temperature range: room temperature ~ 150 ? 4. Determination of the viscosity range: 0.5-8mpa.S@150c 5, the control pressure range: 3.5kgf / cm2 ~ 35kgf / cm2 6, sample capacity: 10 ml 7, pressure display: digital pressure gauge 8, the time display: digital schedule 9, the result of the calculation: friend’s dedicated calculation software 10, power supply: ac220v 50hz
Scope Automatic high-temperature high-shear viscosity meter were measured and the apparent viscosity of the lubricant at high temperature and high shear rates, the test principle is at 150 ? test conditions, under nitrogen (carbon dioxide) pressure, the sample from the capillary viscosity meter flow, and pressure from the flow time of the sample, obtained apparent shear rate capillary viscometer reaches a certain apparent viscosity, with each pool viscometer calibration curve corresponding to the measured pressure of the oil viscosity. Features 1, high-temperature high-shear viscosity automatic analyzer for domestic initiative, the key components used by the us cn accessories to ensure product quality; 2, automatic high-temperature high-shear viscosity meter with digital display of pressure and time, more intuitive controllable; 3, high-temperature high-shear viscosity automatic analyzer using flanders dedicated high shear viscosity calculation software prompts, easy to learn; 4, there is a stopcock automatic high temperature and high shear viscosity of each sample tube detector, in line with the standard requirements; 5, automatic high-temperature high-shear viscosity analyzer configured with ftc circuit protection devices, over-temperature automatically cut off power; Technical parameters 1. Applicable standards: astm d5481 sh / t0703 2, heating: electric heating rods 3, temperature range: room temperature ~ 150 ? 4. Determination of the viscosity range: 0.5-8mpa.S@150c 5, the control pressure range: 3.5kgf / cm2 ~ 35kgf / cm2 6, sample capacity: 10 ml 7, pressure display: digital pressure gauge 8, the time display: digital schedule 9, the result of the calculation: friend’s dedicated calculation software 10, power supply: ac220v 50hz
Scope Applied standards: gb/t2539, astm d87, iso3841 Features 1. With integrated design, easy operation and maintenance; 2. With pid temperature control, high precision, stable; 3. With automatic chronograph, alarm system ; 4. With double elastic, easy to operate parallel experiments. Technical parameters 1. Applied standards: gb/t2539 iso2707; 2. The temperature control means: quantity pid temperature controller; 3. Work: two holes; 4. Power supply: ac220 ± 50% 50hz; 5. Total power: 300w
Scope UV fluorescence sulfur analyzer is based on UV fluorescence measurement principle and the development of computer technology combined with a new generation of precision instruments, is currently the most advanced of the total sulfur content tester, in line with ASTM D5453, SH / T 0689 and other standards, the instrument is National total sulfur content of refined oil arbitration standards. Now widely used in the determination of total sulfur content of crude oil, hydrocarbons and fuel, petroleum, plastics, petrochemicals, food and so on. Measurement principle instrument uses ultraviolet fluorescence method, when the sample is introduced into the pyrolysis furnace, cracking occurred sample oxidation of sulfide which quantitatively converted to sulfur dioxide, carried by a carrier gas, off which the water through a membrane dryer, into the reaction chamber, sulfur dioxide absorbing ultraviolet light energy into an excited state of sulfur dioxide (SO2 *), the fluorescence emission of sulfur dioxide when SO2 * to return to a stable state, the energy released by a photomultiplier tube to receive, and then the micro-current amplifier, computer data processing, the amount of reaction with sulfur dioxide emission intensity is proportional to the amount of sulfur dioxide and total sulfur content in the sample is proportional, so the content of the sample can be determined by measuring total sulfur emission intensity. Features 1, computer-controlled operation, enabling interactive, data, peak shape can be automatically stored print. 2, the operating software can be connected with LIMIS system, automatic data transmission. 3, the instrument uses the new quartz pyrolysis tube, the injection volume can be increased to reduce measurement errors, increase the sensitivity of the instrument, higher repeatability. 4, cooling fans, automatic switch, eliminating the need to wait for the shutdown to finish samples trouble, saving time and effort. 5, darkroom system uses the latest technology, the key components imported detecting element to improve the detection accuracy and sensitivity of the instrument. 6, equipment imported membrane dryer to absorb , eliminating the need to frequently replace magnesium perchlorate of trouble, while reducing the leakage problem. 7, using computer control of temperature, improve the instrument precision temperature control, and difficult to over-temperature. 8, using air instead of water cooling, saving water resources. 9, can be adjusted to take existing calibration curve calibrated using a standard sample after sample analysis. Technical Parameters 1, in line with standards: ASTM D5453, SH / T 0689 and other standards 2, measuring range: 0.2mg / L ~ 10000mg / L ~ percentage 3. Air source: Argon: 99.999% Oxygen: 99.999% 4, sample status: solid, liquid, gas (with corresponding injector) 5, temperature range: room temperature ~ 1100 ? ± 3 ? 6, repeatability error: 0.2mg / L=X
Features 1, the oil cup conforms to the standard GB/T5654-2007 three electrode structure, the inter electrode spacing is 2mm, it can eliminate stray capacitance and the effect of leakage on the dielectric dissipation test results. It has oil discharge electromagnetic switch, the operator can remove the sample oil from oil cup under the condition of don’t remove the oil cup, and can clean the oil cup with sample oil. 2, the instrument uses induction heating, PID temperature control algorithm. The heating mode has the advantages of oil cup and heating body non-contact, heat evenly, fast, and easy to control the temperature strictly controlled within the preset temperature error range. 3, the internal standard capacitor is the SF6 inflatable three electrode type capacitor. The dielectric dissipation and capacitance of the capacitor are not affected by the ambient temperature and humidity. The precision of the instrument is guaranteed after long time use. 4, AC test power supply using AC-DC-AC conversion, which can effectively avoid the influence of mains voltage and frequency fluctuation on the accuracy of dielectric dissipation test. Even if the generator is generating electricity, the instrument can run correctly. 5, this instrument has a perfect protection function. When there is over-voltage, over-current, high voltage short circuit, the instrument can quickly cut off the high pressure, and issue a warning message. When the temperature sensor fails or is not connected, a warning message is issued. In the medium frequency induction heating furnace with limit temperature relay, when the temperature exceeds 120 degrees, the relay release, heating stop. 6, test parameter setting is convenient. The temperature setting range is 0 ~ 125 ?, the AC voltage setting range is 500 ~ 2200V, and the DC voltage setting range is 0 ~ 500V. 7, the instrument uses a large-screen LCD display, with backlight, clear display and so on. Friendly man-machine interface, just follow the English menu prompts, enter the command, the instrument can be automatically tested. And automatically store and print test results. 8, this instrument has a real-time clock, test date and time can be saved with the test results, display and print. 9, this instrument has an empty electrode cup calibration function. It can measure the capacitance of the empty electrode cup and dielectric dissipation factor to determine the cleaning and assembly of empty electrode cups. Calibration data is automatically saved for accurate calculation of relative permittivity and DC resistivity.
FDR-3301 UV fluorescence sulfur analyzer Scope UV fluorescence sulfur analyzer is based on UV fluorescence measurement principle and the development of computer technology combined with a new generation of precision instruments, is currently the most advanced of the total sulfur content tester, in line with ASTM D5453, SH / T 0689 and other standards, the instrument is National total sulfur content of refined oil arbitration standards. Now widely used in the determination of total sulfur content of crude oil, hydrocarbons and fuel, petroleum, plastics, petrochemicals, food and so on. Measurement principle instrument uses ultraviolet fluorescence method, when the sample is introduced into the pyrolysis furnace, cracking occurred sample oxidation of sulfide which quantitatively converted to sulfur dioxide, carried by a carrier gas, off which the water through a membrane dryer, into the reaction chamber, sulfur dioxide absorbing ultraviolet light energy into an excited state of sulfur dioxide (SO2 *), the fluorescence emission of sulfur dioxide when SO2 * to return to a stable state, the energy released by a photomultiplier tube to receive, and then the micro-current amplifier, computer data processing, the amount of reaction with sulfur dioxide emission intensity is proportional to the amount of sulfur dioxide and total sulfur content in the sample is proportional, so the content of the sample can be determined by measuring total sulfur emission intensity. Features 1, computer-controlled operation, enabling interactive, data, peak shape can be automatically stored print. 2, the operating software can be connected with LIMIS system, automatic data transmission. 3, the instrument uses the new quartz pyrolysis tube, the injection volume can be increased to reduce measurement errors, increase the sensitivity of the instrument, higher repeatability. 4, cooling fans, automatic switch, eliminating the need to wait for the shutdown to finish samples trouble, saving time and effort. 5, darkroom system uses the latest technology, the key components imported detecting element to improve the detection accuracy and sensitivity of the instrument. Technical Parameters 1, in line with standards: ASTM D5453, SH / T 0689 and other standards 2, measuring range: 0.2mg / L ~ 10000mg / L ~ percentage 3. Air source: Argon: 99.999% Oxygen: 99.999% 4, sample status: solid, liquid, gas (with corresponding injector) 5, temperature range: room temperature ~ 1100 ? ± 3 ? 6, repeatability error: 0.2mg / L=X
Scope Ph meter is a digital display ph meter, which uses blue backlight, double digital display, can display the ph value, temperature value or potential (mv) values. The instrument applies to universities, research institutes, environmental monitoring, industrial and mining enterprises and other departments of the laboratory sample to measure the ph of the aqueous solution and the potential (mv) values, coupled with the orp electrode measurable solution orp (oxidation - reduction potential) values , coupled with ion-selective electrode to measure the value of the electrode potential of the electrode. Features 1. Ph meter with lcd, english operation interface; 2. Ph meter using microcontroller automatic control experiment without human duty; 3. Ph meter assay changes in various parameters, automatic test results; 4. Ph meter has a self-diagnostic function, suggesting operating functions. Technical parameters 1. Instrument level: 0.01 2. Measuring range: ph 0.00 ~ 14.00ph; mv 0 ~ ± 1400mv 3. Resolution: 0.01ph. 1mv. 0.1 ? 4. Temperature compensation range: 0 ~ 60 ? 5. Electronic unit basic error: ph ± 0.05ph; mv ± 1% (fs) 6. Basic instrument error: ± 0.1ph 7. Electronic unit input current: less than 1 × 10 - 11 a 8. Electronic unit input impedance: not less than 3 × 10 11 o 9. Electronic unit repeatability error: ph 0.05ph; mv 5mv 10. Instrument repeatability error: not more than 0.05ph
Scope According to the people's republic of china national standard gb / t 1792 requirements "mercaptan sulfur distillate fuels assay (potentiometric titration)" under the design and manufacture suitable for measuring the content is within 0.0003 ~ 0.01% (m / m) range, no hydrogen sulfide jet fuel, gasoline, kerosene and light diesel mercaptan sulfur. Features 1, the liquid crystal display, english operation interface, can display information about the test parameters and measurement results 2, with pre-titration, preset endpoint titration, blank titration or manual titration functions, and can generate special titration mode according to user habits 3, the choice of different electrodes can be: acid-base titration, redox titration, precipitation titration, complexometric titration, and other non-aqueous titration and ph measurement 4, stirring system uses pwm modulation technology, software speed, low noise 5, perchloric acid titration system using anti-corrosive materials, can be a variety titration Technical parameters The instrument level: 0.05 1, measuring range: Ph: (0.00 ~ 14.00) ph Mv: (- 1800 ~ 1800.0) mv Temperature: (- 5.0 ~ 105.0) ° c 2, resolution: Ph: 0.01ph Mv: 0.1mv Temperature: 0.1 ° c 3, the basic error: Ph: ± 0.01ph ± 1 word Mv: ± 0.03% fs Temperature: ± 0.3 ° c ± 1 word 4, burette capacity tolerance: 10ml burette: ± 0.025ml 20ml burette: ± 0.035ml 5, burette resolution: 10ml burette: 1/10000 20ml burette: 2/10000 6, burette infusion or infusion rate: (50 ± 10) s (buret full degrees) 7, titration analysis repeatability: 0.2% Titration control sensitivity: ± 2 mv 8, stability: (± 0.3mv ± 1 word) / 3h 9, power source: ac (220 ± 22) v, (50 ± 1) hz 10 dimensions (mm): 340 × 400 × 400 11, instrument weight: 10 kg
Scope Engine coolant freezing point tester in accordance with the national standard gb / t2430 "determination of the freezing point of jet fuel, " requires the state petroleum and chemical industry standard sh / t0090 "engine coolant freezing point determination" provides design and manufacture. Choose a different configuration, measuring jet fuel, engine coolant concentrate its freezing point and other indicators may be used separately, is a multi-purpose freezing point tester. Features 1. Double vacuum glass observation window, real-time observation of samples during operation; 2. Using imported compressor refrigeration the cascade technology can reach -70 ° cold bath, noise; 3. Using pid control techniques, temperature control, temperature control accuracy of ± 0.5 °c4, engine coolant freezing point tester using state-of 4. The art electromagnetic stirring, no noise, low failure rate, is the preferred alternative to the traditional mechanical agitation. Technical parameters 1. Power supply: ac 220v ± 10%; 50hz; 2. Work the cold tank: stainless steel cold tank, double vacuum glass viewing window; 3. Cold trough temperature: +20 °c~ -70 °c; 4. Temperature accuracy: ± 0.5 °c; 5. Bath agitation: automatic stirring motor, power 6w, 1200r / m; 6. Refrigeration system: new refrigeration compressor; 7. Sample stirring: electromagnetic stirring, 0 to 120 beats / minute, continuously adjustable; 8. Ambient temperature: 30 °c; 9. Relative humidity: 85%; 10. Total power consumption: not more than 2000w.
Scope Saybolt colorimeter can measure refined petroleum products, including a set of matching samples and equipped with optical indicator of standard tube. In the same light source sample with standard color comparison. Reduce the liquid column height of the sample until the sample was significantly lighter than the standard palette of colors, and use the chart on the instrument to convert saybolt color of height. Three standard color glass on - position color standard pipe may conveniently be replaced swatches. After paraffin saybolt colorimeter is equipped with a heater for the determination of paraffin, during the test, it is not flowing like melted wax. Sample tube has a 200w chrome steel strip heater, with a hinged lid to maintain the heat evenly. Aluminum heater with a 50w fuel element is kept molten wax-like state. Affiliated variable transformer can be used to regulate the temperature of the sample. Optical observation instrument and shelves are fully insulated with a heater. Test tube assembly with a heat-resistant fiber handle. Features 1, in line with gb / t3555, astm d156; din 51411; ftm 791-101; nf m 07-003 and related specifications 2, three color standard pipe (three-position color standard turret) 3, the test of non-liquid wax and liquid petroleum products 4. Determination of refined petroleum products saybolt color (saybolt color). It includes a set of matched sample and standard tube assembly having an optical observation instrument. 5, the key components imported accessories. 6, compact structure, well-made. 7, easy operation and flexible. 8, test data is accurate, fast, at a glance. Technical parameters 1, paraffin saybolt colorimeter 220-240v, 50 / 60hz 2, the entire thickness of standard color (3) 3, semi-thick standard color (1) 4. Making the saybolt color number and column height table sample (1) 5, the day light: 110-240v 6, frosted bulb: 60w, 220v 7, variable transformer: 220-240v
Scope Saybolt colorimeter can measure refined petroleum products, including a set of matching samples and equipped with optical indicator of standard tube. In the same light source sample with standard color comparison. Reduce the liquid column height of the sample until the sample was significantly lighter than the standard palette of colors, and use the chart on the instrument to convert saybolt color of height. Three standard color glass on - position color standard pipe may conveniently be replaced swatches. After paraffin saybolt colorimeter is equipped with a heater for the determination of paraffin, during the test, it is not flowing like melted wax. Sample tube has a 200w chrome steel strip heater, with a hinged lid to maintain the heat evenly. Aluminum heater with a 50w fuel element is kept molten wax-like state. Affiliated variable transformer can be used to regulate the temperature of the sample. Optical observation instrument and shelves are fully insulated with a heater. Test tube assembly with a heat-resistant fiber handle. Features 1, in line with gb / t3555, astm d156; din 51411; ftm 791-101; nf m 07-003 and related specifications 2, three color standard pipe (three-position color standard turret) 3, the test of non-liquid wax and liquid petroleum products 4. Determination of refined petroleum products saybolt color (saybolt color). It includes a set of matched sample and standard tube assembly having an optical observation instrument. 5, the key components imported accessories. 6, compact structure, well-made. 7, easy operation and flexible. 8, test data is accurate, fast, at a glance. Technical parameters 1, paraffin saybolt colorimeter 220-240v, 50 / 60hz 2, the entire thickness of standard color (3) 3, semi-thick standard color (1) 4. Making the saybolt color number and column height table sample (1) 5, the day light: 110-240v 6, frosted bulb: 60w, 220v 7, variable transformer: 220-240v
Scope Applied standards: gb/t7326 Features 1. With integrated design, easy to operate and maintenance; 2. With pid temperature control temperature control system, high precision temperature control, stability; 3. With automatic timing to the alarm system; 4. Using the results of the multi bomb, and to facilitate the operation of parallel experiments. Technical parameters 1. Test tube bath capacity: 6 test jars; 2. Digital precision temperature control; 3. The digital timing device, automatic real-time alarm device ; 4. Machine low noise, environmental protection; 5. Temperature control stability: ±0.1°c.
Scope Applied standards: gb/t269, iso2137, astmd217, ip50 Applied range: the grease by mechanical shearing and consistency change, then with the cone penetration tester were measured to determine the mechanical stability of grease. Features 1. With integrated design, easy operation and maintenance; 2. It adopts imported motor drive, low noise, long life; 3. With automatic timing to the alarm system; 4. Using the results of the double bomb, to facilitate the operation of parallel experiments. Technical parameters 1. Shear rate: 60 times / min; 2. The working stroke: 67 ~ 71mm; 3. The number of significant count: 0 to 10 million times; 4. Count method: automatic; 5. Motor power: 370w
Scope Grease similar viscometer applicable standards: sh/t0048 Grease similar viscosity meter with automatic capillary viscosity meter samples of similar viscosity, mainly suitable for grease. The viscosity of the grease at a certain temperature as the shear rate and becomes variable, called a similar viscosity. The sample was subjected to pressure is designed and made as per a spring acting on the ram within the sample tube, while the outflow from the capillary, the relaxation of the spring, a pressure within the tube is gradually decreased, it can be obtained under similar viscosity values in the series of average shear rate. Features 1. Capillary viscometer, the structure is reasonable and compact, with three variable speed; 2. The magnetic transfer medium circulation pump, no noise; 3. Stainless steel medium bath body; 4. Microcomputer temperature controller, digital display, accuracy of ± 0.5 ° c; 5. Hermetic compressor refrigeration, to ensure the supply of cold; 6. Split structure, convenient to move. Technical parameters 1. Control the temperature: room temperature to -35 ° c ± 0.5 ° c (other temperature optional); 2. Modes of operation: compressor refrigeration cycle, digital temperature control; 3. Temperature control mode: pid temperature control; 4. Power supply:ac220v± 10%, 50hz.
Scope Applicable standards: astm d1831, sh/t0122. Provides an indication of shear stability of lubricating greases by testing the change in worked penetrations after two hours in the roll stability tester. The instrument used in determination of grease consistency changes in the roller testing machine after work, with mechanical shear stability judgment of grease. Features 1. Idler retaining ring control drum work properly; 2. The bottom is equipped with a drive motor, so that speed is maintained at 155 ~ 180r/min; 3. Microcomputer temperature controller, digital display, accuracy ± 5 °c pt100 sensors; 4. Digital timer, record work time with the wind sounded the alarm. Technical parameters 1. Applicable standards: astm d1831 sh/t0122; 2. Heating method: electric coil heating machine power 1000w; 3. Working power: ac220v/50hz, temperature control range of 21 ~ 38°c; 4. Motor speed: 155 ~ 180r/min; 5. The unit of work: unit 2.
Scope Applied standards: gb/t269-91?iso2137-85?astmd217-82?ip50-79 Application range: it’s applied to the viscosity of lubricating grease and malthenes (vaseline) also used to test the materials like solids, particle and powder colloid and froze materials as well as the food raw materials like cream, carbohydrate gum, butter and barmy cream, etc. Features 1. It can allow the test in a different direction, and can even be used in a constant temperature water bath; 2. With digital display depth measuring mechanism, easy to use, good repeatability and high accuracy; 3. Bracket move fast and fretting two kinds of speed, ease of test operation of the tip of the needle at the surface of the sample; 4. It has a table level adjusting mechanism, and easy to adjust; 5. With manual release pin into pieces of bodies, to ensure that in the not automatically controlled release, still normal operation. Technical parameters 1. Time controller Control range: 0-9 minutes and 59 seconds; Control time accuracy: ± 0.1 seconds; 2. Maximum measurable penetration: 620; 3. Standard cone: 102.5g (with gb / t requirements); 4. Standard ram: 47.5g (with gb / t requirements).
Scope This product is to simulate the atmosphere composed of tiny droplets of salt spray dispersion environmental equipment, are widely used in electronics, electrical and automotive, aerospace, mobile communications, motorcycles, plastics, machinery parts, electronic components, metal surface of the material, in whole or protective layer salt spray corrosion test. Features 1. Its key components imported components, low failure rate, good stability; 2. It innovative use of water detection technology, eliminating the inconvenience of artificial water; 3. It using pid temperature control technology, precise temperature control; 4. It with glass viewing window, good visibility.
Scope The applicable standard: sh/t0325, astm d942 The applicable range: using oxygen bomb method to determine the oxidation stability of grease. Features 1. Integrated design, easy operation and maintenance; 2. Pid temperature control temperature control system, high precision and stable; 3. Automatic timing, alarm system; 4. The results of the double bomb, to facilitate the operation of parallel experiments. Technical parameters 1. The applicable standard: sh/t0325, astm d942; 2. Input voltage: ac220v ± 10%, 50hz; 3. Measuring range: room temperature -200°c; 4. Heating power: 1.8kw; 5. Temperature control accuracy: ± 0.5 °c, 113 ± 3°c; 6. Dimensions: 540 × 380 × 490mm.
Scope Petroleum products vacuum distillation analyzer is based on national standards gb / t9168 "petroleum products - determination of distillation under reduced pressure" design, manufacture. For the determination of the maximum temperature of the liquid reaches 400 ?, can be partially or completely evaporated boiling range of petroleum products under reduced pressure. Features Equipment and inputs by the host refrigeration apparatus of two parts. Host by the bath, temperature control portion, glassware, balance tank, the pressure regulating system, solenoid valves, electric heaters and other components. Its main features are as follows; 1, the main instrument is compact, attractive appearance, easy to operate, bath and end table made of stainless steel, corrosion resistance. 2, bath temperature by a digital temperature controller temperature control, temperature control table can visualize circulating water temperature, and can accurately control the temperature. 3, by the vacuum pump, pressure regulating system pressure system, solenoid valves, balance tanks and other components, make the pressure constant within a predetermined range. 4, the flask was heated furnace using a parallel structure, uniform heating, electric can adjust up and down, and with a fan to cool it quickly. 5, into the cold trap by the refrigeration apparatus cooling, convenient and reliable. Technical parameters 1, power: ac220v ± 10% 50hz 2, input power: 1900w host instrument into refrigeration 300w 3, the water bath temperature range: room temperature ~ 99.9 ? 4, temperature control accuracy: ± 2 ? 5, adjusting the pressure range: ac10 ~ 220v 6, pressure adjustment range: 1mmhg ~ 4mmhg 7, the outer shape dimensions: 720x420x680mm
Scope This instrument conforms to sh / t0169 standard Features 1, imported brand compressor, unique metal cold bath, no alcohol and so do the media, cooling speed, good cooling effect. 2, using precision pid temperature control technology, high-precision temperature sensor, temperature control and accurate. 3, the use of integrated design, easy operation and maintenance. Technical parameters 1, temperature range: room temperature -40 ? ± 0.5 ? 2, power supply: ac220v ± 10% 50hz 3, the cooling bath: a container capable of accommodating a sufficient amount of the cooling medium, the freezing point of the solvent can be maintained below 5 ? constant temperature. 4, the outer tube: pyrex test tube, 60mm × 250mm, with a rubber inner tube sese live in the lower part there is a cork ring to the inner support tube 5, inner tubes: heat-resistant glass tube: 45mm × 240mm, with a thermometer and stirrer can put two holes rubber match. 6, stirrer: ring blender glass or other inert material, so that from the thermometer with a diameter of about test tube wall into equidistant, you can use mechanical agitation.
