Water Vapor Permeability Tester is manufactured based on the gravimetric method, and is applicable to test the water vapor transmission rate of plastic films, composite films, sheets and other materials used in packaging, medical and constructive industry.
Features
Standard periodic weighing method and auto-zeroing function guarantee the accuracy and uniformity of the testing data.
Touch interface is more convenient to operate.
The test data is reliable due to the automatic process and the weighing system controlled by the gas cylinder.
Innovative circulating dehumidification system with built-in vacuum pump can effectively prevent the formation of humidity gradient and ensure the accuracy.
High-precise and automatic control system of temperature can be used under different conditions.
The data can be stored and outputted in multi-format (including report in excel and cloud sharing).
The rapid calibration mode with standard weight-counter is provided.
GMP management of user's three-level authority complies with international standard.
The instrument processes statistical analysis of single and group data.
Equipped with ISP control online and upgrade function.
Specialized communicating software can display in real-time, analyze and store data.
Principle
Under a certain temperature, the constant difference of humidity is generated between two sides of the test specimen. The water vapor permeates through the specimen and gets into the dry side. By measuring the weighing changes of the test dish in different time, water vapor transmission rate and other parameters can be obtained.
Standards
ISO 2528, ASTM E96, ASTM D1653, TAPPI T464, DIN 53122-1, JIS Z0208, GB/T 1037, GB/T 16928, YBB 00092003.
Technical Specifications
Test Range 0.01 ~ 10,000 g/m²24h (Standard)
Number of Specimen 1 pc (One chamber)
Accuracy 0.01 g/m²24h
Resolution 0.0001Â g
Range of Temperature 15Â ~ 65Â (Standard)
Accuracy of Temperature ±0.5
Range of Humidity 10%RH ~ 98%RH (Standard 90%RH)
Accuracy of Humidity ±1%RH
Velocity 0.5 ~ 2.5 m/s (Customization is available)
Test Area 33.18 cm²
Sample's Thickness  3 mm (Customization is available)
Sample's  Size 74 mm
Air Connection 6mm PU Tubing
Dimension 440 mm (L) 450 mm (W)Â 450 mm (H)
Power Supply AC 220V 50Hz
Net Weight 42Â kg
Commodity: Sodium Hydrosulfite Other name: Synonyms: Sodium Hydrosulphite; Sodium Dithionite; Dithionous acid, Disodium salt; Sodium Sulfoxylate CAS No.: 7775-14-6 Molecular Weight: 174.10 Chemical Formula: Na2S2O4 Product Description Appearance: White, crystalline powder. Product Feature Odor: Slight irritative. Specific Gravity: Unavailable Solubility: Soluble in water. Density: 2.19 pH: 6-7 pH Test-Method: PH test paper. % Volatiles by volume @ 21C (70F): 0 Boiling Point: Not applicable. Melting Point: >300 C Decomposes. Vapor Pressure (mm Hg): No information found. Bulk Density: ~0.9 Evaporation Rate (BuAc=1): No information found. Application 1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching . 2. bleaching paper pulps , especially mechanical pulps, its the most fittable bleaching agent in pulps. 3. bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products, 4. in mineral, the compound of thiourea and other sulphides. 5. as reducing agent in chemical industry. 6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms. Packaging 50kg/100kg net in iron drums with double PVC bags Product Specification/Models NDEX 90%, 88%, 85%. FOOD ADDITIVE Na2S2O4, 90%, 88%, 85%, Fe 20ppm ZincZnOther heavy metal calculated as Pb, 1ppm Water Insolubles05% Shelf Life(month)12
Melting point 151-154 C(lit.) Boiling point 265 C100 mm Hg(lit.) Density 1,36 g/cm3 vapor density 5 (vs air) vapor pressure 1 mm Hg ( 159.5 C) refractive index 1.4880 FEMA 2011 | ADIPIC ACID Flash point 385 F storage temp. Store below +30C. solubility methanol: 0.1 g/mL, clear, colorless pka 4.43(at 25) form Solid color White Odor wh. monoclinic prisms, pract. odorless PH 3.74(1 mM solution);3.22(10 mM solution);2.71(100 mM solution); Water Solubility 1.44 g/100 mL (15 C) Merck 14,162 JECFA Number 623 BRN 1209788 Exposure limits ACGIH: TWA 5 mg/m3 Stability Stable. Substances to be avoided include ammonia, strong oxidizing agents. InChIKey WNLRTRBMVRJNCN-UHFFFAOYSA-N LogP 0.09 at 25â?? FDA 21 CFR 184.1009; 582.1009; 175.300; 175.320; 177.1680 Substances Added to Food (formerly EAFUS) ADIPIC ACID SCOGS (Select Committee on GRAS Substances) Adipic acid CAS DataBase Reference 124-04-9(CAS DataBase Reference) EWG's Food Scores 1 FDA UNII 76A0JE0FKJ NIST Chemistry Reference Hexanedioic acid(124-04-9) EPA Substance Registry System Adipic acid (124-04-9)
Product Introduction SF6 intelligent micro water quality tester is developed and designed according to the national power industry standard DL t506 2007 insulation gas humidity measurement method for sulfur hexafluoride electrical equipment and adopts the imported high precision dew point sensor and new digital circuit control technology. It is a high-precision intelligent instrument to measure the trace moisture content in SF6 gas. This instrument adopts intelligent self calibration technology wide measurement range fast response high accuracy good linearity dynamic display of measurement curve. At the same time the instrument also has an automatic dryer which can greatly reduce the measurement time. Technical Parameters Measuring range Dew point value 80 20 Moisture content 0 19999uLL Accuracy of measurement 0.5 60 20 1.0 80 60 The resolution of the Dew point value 0.1 Moisture content 1uLL Response time 20 0.1mpa 63 needs 5s 90 needs 45s 60 20 63 needs 10s 90 needs 240s 20 60 Sampling flow 0.6L min 20 Pressure range 01.0Mpa The use of temperature 20 60 Environmental humidity 0 100 RH Storage temperature 20 80 Charging time 4 hours The whole machine size 250 150 300mm3 The weight of The machine 3.5kg
Gas Permeability Tester is based on the differential pressure method and is professionally applicable to the determination of gas transmission rate as well as solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting, metal foils, rubber, tires and permeable membranes. Features The touch interface is auto-visual and easy to operate. Pneumatic clamping improves sealing and avoids manual error. Fully automatic process and the gas permeability, solubility coefficient and diffusion coefficient of the sample can be measured at the same time. Three kinds of test mode (proportion, material and time) are getting to meet different requirements. Provided standard membrane for rapid calibration to ensure the accuracy of testing data. Widely test under various conditions with high-precise temperature and humidity control (optional). The testing range can be expanded to meet the requirements of high transmittance test in accordance with clients' demand (can be modified). Supporting the testing of toxic gas, flammable and explosive gas (can be modified). Complied with GMP users' three-level authority. Systematical analysis of testing results can be carried out. ISP online control and upgrade function are excellent and testing function can be changed remotely according to requirements. Specialized software is used for real-time testing display, data analysis and storage. Principle The pre-conditioned specimen is mounted in the gas diffusion cell as to form a sealed barrier between two chambers. The lower-pressure chamber is firstly evacuated, followed by the evacuation of the entire cell. A flow of gas is thereafter introduced into the evacuated higher-pressure chamber and a constant pressure difference is generated between two chambers. The gas permeates through the specimen from the higher pressure side into the lower side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber. Standards ISO 15105-1, ISO 2556, ASTM D1434, JIS K7126-1, GB/T 1038-2000, YBB 00082003. Configurations Standard: Instrument, Professional Software, Round Sample Cutter, Vacuum Grease, Fast Quantitative Filter Paper and Vacuum Pump. Optional: Blades for Sample Cutter, Vacuum Grease, Vacuum Pump Oil, Fast Quantitative Filter Paper, Humidity Generator. Note: 1. The air connection of the instrument is 6 mm PU Tube. 2. Customers need to prepare for air source and distilled water.
Film Shrinkage Test Equipment Film Shrinkage Tester GBK-D1 Film Shrinkage test, known as linear thermal shrink test or free shrink test, is used for analyzing the effect of temperature on heat shrinkable films made from polyethylene, ethylene copolymers and their mixtures. Basically, shrinking force, contracting force and shrinking ratio can be measured in such determination. GBPI Film Shrinkage tester conforms to the multiple national and international standards: ASTM D2732 - Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting ISO 14616 - Plastics Heatshrinkable films of polyethylene, ethylene copolymers and their mixtures Determination of shrinkage stress and contraction stress DIN 53369 - Testing of plastic films determination of the shrinking stress Film Shrinkage Test Equipment GBK-D1 is used to determination of the degree of unrestrained linear thermal shrinkage and dimensional stability at different temperatures. Widely used in industries of plastic material, plastic products, petroleum, chemicals, research institute, inspection agency and so on. Principle This tester uses the principle of air heating to connect the tested sample to the tension sensor and displacement sensor. After reaching the maximum shrinkage force, it is placed in an external test environment with an ambient temperature of 23 to cool down. The reference temperature, shrinkage force and displacement are recorded, and the recorded data can be used to determine the optimal shrinkage conditions of the film. Standards ISO 14616, ASTM D2732, DIN 53369
4-Chloro-3,5-dimethyl is a white crystalline powder. Melting point 115-116 C, boiling point 246 C. At 20 C, 1g can be dissolved in 3L water, 1 part of 95% alcohol, ether, benzene, terpenes, non-volatile oils. It has a slight smell and can volatilize with water vapor. Stable in hot water.
Name: N,N-bis[3-(dimethylamino)propyl]-N',N'-dimethylpropane-1,3-diamine Boiling point 297.7�±8.0 �°C(Predicted) density 0.892�±0.06 g/cm3(Predicted) vapor pressure 1.333hPa at 10�ºC storage temp. 2-8�°C solubility Chloroform (Sparingly), Methanol (Slightly) form Oil pka 10.05�±0.28(Predicted) color Colourless Water Solubility 54.99g/L at 25�ºC LogP 0.05 at 25�ºC
Melting point -40 �°C (lit.) Boiling point 197 �°C (lit.) density 0.925 g/mL at 25 �°C (lit.) vapor density 4.1 (vs air) vapor pressure 0.02 mm Hg ( 20 �°C) refractive index n20/D 1.427(lit.) Fp 201 �°F storage temp. Store below +30�°C. solubility H2O: 1 M at 20 �°C, clear, colorless form Slightly Viscous Liquid pka 15.10�±0.29(Predicted) color Clear PH 6-8 (25�ºC, 1M in H2O) Odor Ammonia-like. explosive limit 1-9.9%(V) Water Solubility soluble 2-Methyl-2,4-pentanediol (MPD) is a diol organic compound with a chiral carbon atom. It is a colorless liquid at room temperature and can be Diacetonee alcohol is hydrogenated. The appearance is colorless liquid with mild sweetness. It is miscible with water, soluble in ethanol, and soluble in most organic solvents.
HPMA is a low molecular weight polymeride, with average molecular weight 400-800. No toxicity, soluble in water, high chemical and thermal stability, decomposed temperature above 330�ºC. HPMA has obvious threshold effect under high temperature (350�ºC) and high pH(8.3)level, suitable to be used in alkaline water system or built with agents. It has good scale inhibition against carbonate and phosphate scales under temperature 300�ºC with effective time as long as 100 hours. Due to its good scale inhibition and high temperature tolerance properties, HPMA is widely used in desalination plant of flash vaporization equipment, low pressure boiler, steam locomotive, crude oil evaporation, petroleum pipeline, and industrial circulating cool water systems. In addition, HPMA has good corrosion inhibition effect when used together with zinc salt. HPMA can also used as additives for cement.
