Cas no. : 1314-13-2 Molecular formula : zno Molecular weight : 81.38 Properties : white powder, stable under normal temperature, good hiding power and colouring power.Insoluble in water and alcohol , soluble in acid , alkali and amkonium solution. Use : in the electronic industry.Zinc oxide for arrester and piezoresistance, magnetic core ferrite, purpose is mainly used for the manufacturing of magnetic materials of tv, radio, telecommunication, rheostat ceramic plate Storage : store at a cool and dry place. Packing : 25kg woven bags lined with plastic bag(special packing can be made according to clients' requirement). Specification ( % ) Item Spec. Zno (dry) 99.9min Pb 0.003max Fe 0.0003max Cuo 0.0002max Cd 0.0005max Metallic zn None Mno 0.0001max Insolubles in hcl solution 0.006max Loss on ignition(500'c) 0.2max Screen residues(320 mesh) 0.1max 105 degree volatile 0.3max Surface area(m2/gm) 0.4-0.6 Relevant products Zinc oxide 99% zinc oxide 99.5% zinc oxide 99.7% Zinc oxide 99.8% zinc oxide 99.9% other grades zinc oxide
â? Chemical Name: Mono-hydrous trisodium 2-hydroxy propane-1,2,3-tricarboxylate potassium citrate. Molecular Formula: K3C6H5O7·H2O â?¡Molecular Weight: 324.41 â?¢Properties: White crystal or powder; odourless; taste salty; slightly deliquescence; readily soluble in water or glycerine, almost insoluble in ethanol (Relative density 1.98, it will melt and decompose when heated to 230â??) . â?£Quality standard: GB14889-94, BP93/98, E332 â?¤Application: In food processing industry,it is used as buffer agent ,chelate agent, stabilizer, antibiotic oxidizer, emulsifier, flavor regluator, used in dairy product, jellies, jam, meat, tinned pastry. Used as emulsifier in cheese and used in citrus freshening. In pharmaceutical, it is used for curing hypokalimia, potassium depletion and alkalization of urine. â?¥Packing: It is packed with polyethylene bag as liner and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg. â?¦Storage and transport: Kept in tightly-closed containers, it should be stored in a dry and ventilative warehouse, kept away from moisture and hot. Furthermore, it should be separately from poisonous substances. Handled with care,so as to avoid damage to bags.
â? Chemical Name: Potassium dihydrogen phosphate(Monopotassium phosphate) Molecular Formula: KH2PO4 â?¡Molecular Weight: 136.09 â?¢Properties: Colourless crystal or white crystalline granule or crystalline powder, odourless, steady in air; relative density 2.338,melting point 96â??-253â??,easily soluble in water(83.5g/100ml, 90â??),PH 4.2 -4.7 in 1% aqueous solution,insoluble in ethanol. â?£Quality standard: Q/320724 LRP001-2007, FCC-V â?¤Application: It can used in food industry as buffer agent,sequestran binder,yeast dietary agent flarour, enhancers, dietary supplement, ferment, supplement, expansion agent etc. â?¥Packing: It is packed with plastic bag as liner,and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg. â?¦Storage and transport: It should be stored in a dry and ventilative warehouse;kept away from water and moisture during transport,and handled with careness, so as to avoid damaging to bags. Furthermore, It should be stored separately from poisonous substances.
â? Chemical Name: Dipotassium phosphate Molecular Formula:K2HPO4 â?¡Molecular weight: 174.18 â?¢Properties: Colorless or white monocline crystal granule. Easy deliquescence, easily soluble in water & insoluble in ethanol. Ph 9 in 1% aqueous solution. â?£Quality standard: Q/320724 LRP003-2007, FCC-V â?¤Application: In food processing industry, it is used as buffer, chelate agent, stabilizer emulsifier. â?¥Packing: It is packed with plastic bag as liner,and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg. â?¦Storage and Transport: It should be stored in a dry, ventilative and clean warehouse; kept away from moisture and hot. Furthermore, it should be stored separately from poisonous substances.
Scope Asphalt fraass breaking point tester is based on national industry standards JTJ052 â??highway asphalt and asphalt testing proceduresâ?� in the T0613 â??Asphalt breaking point test (Fraass Method)â?� design and manufacturing requirements for the determination of bituminous materials Fraass brittle point. Features The test apparatus is a metal sheet coated with a special layer of asphalt film Cooling method device equipped with thermal insulation tube, bending the metal sheet is designed and made as per the handle, as the temperature decreases the asphalt film temperature is gradually decreased, when drops below a temperature, the asphalt film produced under conditions specified bending fracture temperature (thermometer with alcohol) is the asphalt breaking point. Technical Parameters 1. Measuring range: -30 ~ 100 °C; 2. Temperature measurement Precision: 1 °C; 3. Steel Dimensions: 41 Ã? 20 Ã? 0.15mm; 4. Clip embedded maximum distance: 44mm; 5. Step height: 3.5mm
Scope Automatic asphalt brittle point tester is based on national standards GB/T4501 "asphalt brittle point assay", the national industry standard JTJ052 "highway asphalt and asphalt testing procedures" in the T0613 "Asphalt brittle point test (Fraass Method ) "requirements set design and manufacture for Fraass brittle point determination of bituminous materials Features 1, automatic asphalt brittle point tester adopts LCD, Chinese operation interface 2, automatic asphalt brittle point tester using microcontroller automatic control experiment without human duty 3, change the asphalt brittle point tester automatically detect a variety of experimental parameters, automatic test results 4, automatic asphalt brittle point tester has a self-diagnostic function, the function prompts 5, automatic asphalt brittle point tester built-in printer output and RS-232 output interface Technical Parameters 1, Power supply: AC 220V ± 10%, 50Hz. 2, cooling: water. 3, the cooling rate: 1 â??± 0.5 â?? / min. 4, temperature range: -27 â?? ~ 25 â??. 5, the measurement error: ± 0.5 â??. 6, the sample steel Size: 41 Ã? 20 Ã? 0.15 (mm). 7, the number of samples: while test 3. 8, temperature: room temperature ~ +30 â??. 9, relative humidity: â?¤ 85%. 10, Power consumption: less than 450W
Scope Asphalt ash analyzer in accordance with the requirements of the standard SH/T0422 designed and manufactured for the determination of ash content in the asphalt. Features 1. with integrated design, easy operation and maintenance; 2. with PID temperature control temperature control, high precision, and stable; 3. Asphalt ash analyzer using ceramic fiber materials, better insulation. Technical Parameters 1. Power supply: AC220V ± 10%; 50Hz; 2. Furnace (heater) heating power: 2400W; 3. Furnaces (box furnace): Heating temperature 900 ± 25 °C, rated power 2500W; 4. Heating method control: manual control switch; 5. Ceramic crucible: 50ml, 100ml.
Scope This instrument conforms to the Standard ASTM D1348 and SH/T 0085. The method uses a glassware method, which can determine the corrosion of engine coolant on a typical metal test piece under laboratory control conditions. Features 1. Integrated design, simple operation; 2. Automatically prompt overflow design, full of water; 3. Rapid sealing valve design, to facilitate the replacement of the bath; 4. Engine coolant corrosion tester test cup quick plug design, fast, stable, safe; 5. Using the precision flow meter control flow, the user at any time adjustable; 6. With professional air pump gas supply, stable airflow, noise-free; 7. Embedded drying system, replacement desiccant convenient, beautiful. Technical Parameters 1. Input power: 220V ± 10%, 50HZ; 2. Heating power: 2000W; 3. The heating medium: glycerin, or heating oil with flash point higher than 100 ° C; 4. Test holes: 4 holes; 5. Timing mode: automatic timing; 6. Ambient temperature: 5 ~ 35 ° C; 7. Relative humidity:
Scope Engine coolant foam tendency analyzer according to People's Republic of China Petroleum and Chemical Industry Standard SH / T0066 requirements "of the engine cooling foam Determination" provides design. It is applicable to the determination method according to SH / T0066 standard, It can be measured diluted or concentrated engine cooling liquid foam. Features 1. Integrated design, easy to operate; 2. With automatic timing device, easy to operate, can also set up their own; 3. Using quick water valve design, to facilitate the replacement of the bath; 4. Test cup quick plug design, fast, stable, safe; 5. Using the precision flow meter control flow, the user at any time adjustable; 6. Using a professional air pump gas supply, stable airflow, noise-free 7. The engine cooling liquid foam tendency analyzer embedded drying system, replacement desiccant convenient, beautiful. Technical Parameters 1. Power supply: AC220V ± 10%, 50Hz; 2. heating power: 2000W; 3. Air flow: controlled by precision flow meter; 4. Measuring range: room temperature ~ 99.9 °C; 5. Timing mode: automatic timing, users can set it; 6. Ambient temperature: -10 ~ +40 °C; 7. Relative humidity: 85%.
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, it can measure the freezing point of jet fuel, engine coolant concentrate separately, it 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. Working cold tank: stainless steel cold tank, double vacuum glass viewing window; 3. temperature control of cold tank: +20 °C~ -70 °C; 4. Temperature accuracy: ± 0.5 °C; 5. Bath stirring: automatic stirring by motor, power 6W, 1200r / m; 6. Refrigeration system: new refrigeration compressor; 7. Display mode; LCD display 8. Ambient temperature: 30 °C; 9. Relative humidity: 85%; 10. Total power consumption: not more than 2000W.
Scope The instrument conforms to the SH/T0090-91 and ASTM D1177 standards, the method is suitable for determine the freezing point of high boiling point and low boiling point engine coolant and concentrated liquid. Features 1, this instrument uses the liquid crystal display, Chinese operation interface 2, this instrument adopts the single chip microcomputer automatic control, the experiment process need not be controlled manually 3, the instrument can detect the changes of various parameters, automatic detection results 4, the instrument has the function of self-diagnosis, prompt operation Technical Parameters 1, Power: AC220V ±% 10 50Hz 2, temperature range: -70 â?? ~ room temperature 3, temperature accuracy: 0.1 â?? 4, heating power: 800W 5, cooling power: 1000W
Scope Engine coolant boiling point tester is to measure the engine coolant boiling point equilibrium for dilute or concentrated engine coolant. Take 60ml sample into 100ml beaker, heated to boiling under normal pressure, when it reaches the gas-liquid equilibrium, read the temperature of the sample, the atmospheric pressure is calibrated to the boiling point of the sample. Features 1, engine coolant boiling point tester with integrated design, easy operation and maintenance 2, engine coolant boiling point tester with PID temperature control system, high precision, stable 3, engine coolant boiling point tester uses electric heating units, no fire, safety and environmental protection 4, engine coolant boiling point tester double bomb result, easy to operate parallel experiments Technical Parameters 1, it applies to the determination of the engine coolant boiling point balance 2, the flask: 100mL 3, a reflux condenser: 200mm long 4, the preparation of glass fiber heating mantle, good insulation properties, no open flame heating, heat evenly 5, solid state voltage controlled heating rate, economic security 6, the instrument Material: brushed stainless steel 7, power supply: AC220V 50HZ
Scope Applicable standards: SH / T0068 ASTM D1122 The instrument with the state standards and the American Society for Testing and Materials standards development, measured by density meter and engine coolant concentrate density or relative density instrument using split structure, convenient operation, greatly improving the work efficiency. Features 1. Engine coolant density meter uses the integrated design, easy operation and maintenance; 2. Engine coolant density meter with PID temperature control and high precision, stable; 3. Engine coolant density meter uses imported compressor refrigeration, cooling capacity, no noise; 4. Engine coolant density meter uses the results of the double bomb, to facilitate the operation of parallel experiments. Technical Parameters 1. Digital thermostat: 20 °C± 0.2 °C; 2. Cooling mode: compressor cooling; 3. Heating mode: Electric tube heating; 4. Stirring method: motor stirring; 5. Sample unit: two holes; 6. Power: AC220V/50Hz.
Scope Applicable standards: SH/T0087 ASTM D2809 Test method: standard aluminum automotive water pumps, pumping the sample to make it operate under certain conditions, 100h, and then check the water pump, determine the extent of cavitation corrosion, and table rating according to the grading system. This instrument is suitable for detecting the engine coolant and the engine coolant concentrate. Features 1. Buick aluminum pump and engine front cover, aluminum pump disassembly easy to replace. 2. The use of explosion-proof motor two-speed pump inverter, the DRO displays the measured speed, accurate and intuitive, the control circuit is equipped with over-temperature protection. 3. The system uses a stainless steel tube connected countertops made of stainless steel fasteners made of stainless steel screws, easy to disassemble never rust. 4. Multi-functional digital timer, timing can be sustained after the half-way down. 5. The use of electric heating tube, liquid storage tank equipped with safety valve, to ensure safe and reliable operation of the instrument. 6. Equipment imported digital temperature controller, PID tracking high precision temperature control. Technical Parameters 1. Aluminum pump speed: 2675r/min, 4600 ± 100r/min; 2. Pressure indicator: 103 ± 3Kpa; 3. The control temperature: 63° C to 68 ° C, 113 ° C ± 3 ° C; 4. Heating power: 2kw; 5. Total Power: 4.2kw; 6. Power: AC380V ± 10% 50HZ; 7. Dimensions: 1100 660 1400 = length width height (mm); 8. Weight: 180Kg.
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, 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 Vapor pressure of liquefied petroleum gas analyzer used by GB/T6602-89 "Determination of vapor pressure liquefied petroleum gas (LPG Act)" under certain pressure meter and 37.8 ~ 70ºC temperature test to measure the vapor pressure of liquefied petroleum gas ( gauge pressure). The instrument applies to a boiling point above 0ºC, hydrocarbon content of less than 5% in 37.8ºC, the vapor pressure of not more than 1550Kpa LPG 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 dual elastic results, easy to operate parallel experiments; 5. Level playing automatically using the vapor pressure of vibration and improve test precision, reduce labor intensity Technical Parameters 1. Power: AC220V ± 10% 50Hz 2. Input power: 0 ~ 1500W 3. Ambient temperature: room temperature ~ +30 °C 4. The output power: constant Heating method: 1000W Motor: 25W 5. Temperature control Precision: 37.8 °C± 0.1 °C 6. The pressure range: 0 ~ 200kpa gauge 7. Sensor: Ptl00 8. The instrument automatically rotating angle of 350 °
Scope LPG residue analyzer according to SY / T 7509 standard design and manufacturing, It is applicable to the determination of the volatiles content of LPG at 37.8 â?? when residues. The 100ml LPG sample is placed in a centrifuge tube volatile, measure and record volume of 37.8 â?? when the residue left behind. At the same time to record a certain amount of solvent and the residue on the filter paper by dropping the mixed solution generated phenomenon. Features 1. Integrated design, easy operation and maintenance; 2. PID temperature control temperature control system, High precision temperature control, stability; 3. The standard fittings, quick convergence cylinders 4. Imported compressor refrigeration, low noise, stable cooling effect Technical Parameters 1. Power: AC220V ± 10% 50Hz 2. Input power: 800W 3. Output power: refrigerator: 2*400=800W 4. Ambient temperature: room temperature ~ +30 °C 5. Measuring range: 20 °C~ -70 °C 6. Refrigerant: F13 & F502 7. Cooling: air-cooled
Scope Petroleum wax penetration tester applies GB/T4985-84 "petroleum wax needle penetration assay", also applies to ASTM-D1321 "petroleum wax needle penetration test" and ISO3992 "petroleum wax needle penetration test". Petroleum wax penetration test is a multipurpose common type, with automatic control devices and with a special needle into the standard petroleum wax pieces. It can be petroleum wax penetration test, with the relevant standards penetration member, It can also be used to verify the test substance and cheese, sugar gum, butter, cream, fermented solid body, fine powders of colloidal, freeze the like other food raw materials. Features 1, the time controller with digital display, control time range: 0 to 9 minutes and 59 seconds, accuracy: ± 0.1 seconds. 2, the digital display depth measuring mechanism, easy to use, good repeatability, high accuracy. 3, the maximum measurable penetration value of not less than 620, can adapt to various test requirements. 4, stents were pointed needles move quickly and fretting two easy alignment of the test operation of the sample surface. 5, stand there with even self-locking function can be securely anchored anywhere. 6, with the table horizontal adjustment mechanism, easy to adjust. 7, with a manual release mechanism of the penetration member, when not in use to ensure that the release time of the automatic control, able to operate normally. Technical Parameters 1, Power: AC220V ± 10% 50Hz 2, Input power: 1000W 3, Timing range: 0.01 ~ 99.99S 4, Delay control accuracy: � 0.3% ± 0.05S
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 It according to GB/T2539 standard "method of measuring the cooling curve of the melting point of the petroleum wax" production, which uses microprocessor control, with a high temperature aluminum block bath, the temperature sensor detects paraffin temperature, touch screen displays real-time temperature curve display screen and can be printed on the test results. Features 1. Using the color touch screen display, English menu prompts, friendly man-machine interface ; 2. The use of high-temperature aluminum block bath, heating good stability, no oil, environmental ; 3. The instrument automatically control heating, automatic detection, automatic printing results ; 4. The instrument is consistent with the operating procedures GB/T2539 ; 5. It can be two trials simultaneously, in order to compare the reference. Technical Parameters 1. The test holes: two hole; 2. The temperature sensor: PT100; 3. Heating: heated aluminum block bath; 4. The temperature detection accuracy: ± 0.1 â?? ; 5. Aluminum block bath temperature: room temperature ~ 200 â?? can be set ; 6. The measured results: screen display and printer; 7. Voltage: AC 220V
