As we all know, liquid nitrogen is a low-temperature liquid and is volatile. Laboratories usually use the low temperature of liquid nitrogen to preserve experimental samples. The use of liquid nitrogen tanks can effectively reduce the volatilization of liquid nitrogen, but over time during use, the liquid nitrogen gradually decreases.
If cell samples are stored below the level of liquid nitrogen or within the gas phase far away from the tank mouth, it is safe for the samples not to be affected by temperature fluctuations. However, when the liquid nitrogen is less than 1/3 of the total amount, the vaporization time of the liquid nitrogen will increase, and the temperature at the top of the liquid nitrogen tank will rise rapidly as the lid is opened, putting cell activity at risk. During this period, if the liquid nitrogen is not replenished in time, or if the liquid nitrogen is completely evaporated before being replenished, and the temperature of the liquid nitrogen tank rises to normal temperature, the cell samples will not only be damaged, but will most likely die!
In order to avoid such problems, laboratory users often use YDD cell bank liquid nitrogen tanks, also known as stem cell liquid nitrogen tanks, to preserve cells and freeze semen samples.
The YDD stem cell liquid nitrogen tank itself has an intelligent monitoring and management system. Its functions cover liquid level monitoring. In addition to displaying the liquid level in real time, when the liquid level is lower or higher than the set value, an audible and visual warning will be issued, accompanied by a text message. Send and never miss a message, even remotely. If liquid nitrogen is not added in time, this function is triggered and the manager will receive relevant prompts. Samples will not be affected for a short period of time.
In addition, the YDD stem cell liquid nitrogen tank supports two storage modes: gas phase and liquid phase. When using the gas phase mode to store biological samples, the bottom liquid nitrogen volatilizes into nitrogen gas and then supplies the top sample. Liquid nitrogen is not directly related to the sample, and liquid nitrogen cannot soak the sample. , the sample may be damaged.
However, in order to ensure the safety of cell samples, it is recommended that you regularly observe the use of liquid nitrogen and refill the jar with liquid nitrogen in time!
If you have any needs, please contact KGSQ liquid nitrogen tank:
As we all know, the storage modes of liquid nitrogen tanks can be divided into two types according to sample storage requirements: gas phase and liquid phase, that is, soaking in liquid nitrogen and storing in nitrogen. In order to make it easier for users to distinguish between the two, regardless of industry or brand, they are accustomed to using storage modes to identify them. Liquid phase storage is liquid phase liquid nitrogen tanks, and gas phase storage is gas phase liquid nitrogen tanks. This is also their main way of distinguishing themselves! Of course, there are other differences besides this, letâ??s introduce them one by one. 1. Model differences: Including capacity size and national standard naming. The liquid phase liquid nitrogen tank has a capacity range of 1-175 liters and is named YDS. The national standard stipulates that the material is aluminum alloy. The gas phase liquid nitrogen tank has a capacity range of 350-1800 liters and is named YDD. The material specified by the national standard is stainless steel. For user use, just select the appropriate model and type based on the number of samples. 2. Mode differences: Liquid phase liquid nitrogen tank, the sample is immersed in liquid nitrogen; The gas phase liquid nitrogen tank meets both liquid phase and gas phase modes. There is a liquid nitrogen storage area at the bottom of the tank to provide liquid nitrogen to the sample area. Note: Vapor phase storage also requires supplementing liquid nitrogen. 3. Management differences: Liquid-phase liquid nitrogen tanks have a wide range of uses and are relatively small in size. Sample classification management relies on buckets and freezing racks. There is no intelligent control and requires manual labor. Regardless of the size of the gas-phase liquid nitrogen tank, it is equipped with an intelligent control system that can display the internal temperature, perform relevant alarms, and automatically replenish liquid nitrogen.
In biological sample centers or scientific research institutions, there are a large number of cells, strains, vaccines and other samples that need to be cryopreserved. The scientific research of these samples is of great significance, and their safety cannot be ignored. In addition, there are requirements for batch management and data collection. Vapor phase liquid nitrogen tanks are often chosen over aviation aluminum Dewars. Vapor-phase liquid nitrogen tank, also known as "stem cell liquid nitrogen tank", is named after it is often used to establish stem cell banks. It is different from ordinary liquid nitrogen containers. It has two storage modes: gas phase and liquid phase. The sample storage method is unconventional and its working principle is break the usual. Sample storage methods in gas phase liquid nitrogen tanks: Partition management, gas phase preservation! The inner tank of the stem cell liquid nitrogen tank is divided into two areas. The upper area is for samples, which is the storage area for stem cells, embryos, bacteria, etc.; the lower area is for liquid nitrogen storage only and does not contain any samples. The bottom position, which is the liquid nitrogen storage area, is equipped with an evaporator to provide evaporated nitrogen for sample storage to cool down. The sample is only "close" to the liquid nitrogen, but does not touch it, and the volatilized low-temperature nitrogen is used to store the cells. Working principle of gas phase liquid nitrogen tank: The principle is actually very simple, such as the use of liquid nitrogen evaporation cooling mentioned above! When the nitrogen in the sample storage area is insufficient to support the sample demand, the bottom evaporator starts working to supply liquid nitrogen to the upper part. This has the advantage of avoiding sample cross-contamination. The reason why I donâ??t mention its other storage mode - liquid phase is because the liquid nitrogen reserve in the container is large, much higher than that of conventional liquid nitrogen containers, and the evaporation loss of stainless steel is higher than that of aluminum alloy. When storing in liquid phase, replenish the liquid. Frequent and troublesome, difficult to use, only gas phase storage is recommended. In addition, the gas-phase liquid nitrogen tank also has high dual-gallery vacuum + high thermal insulation performance, which reduces heat conduction, reduces the evaporation rate of liquid nitrogen, and maintains stable pressure inside the tank. The built-in intelligent control management system is used for real-time detection and abnormal warning of temperature, pressure and liquid level to ensure the stability of the tank and the safety of stem cells. If you have any needs, please contact KGSQ liquid nitrogen tank:
Features: High strength and high corrosionproof, provides long service life and convenient to fill and clean. It provides wide applicability and can be widely applied for packaging in industries such as chemical engineering, petroleum, medicine and food etc. Seal liquid test:Put the sealed barrel with liquid upside down or tap,the seal is at the lowest position,and no leakage within 24 hours. The standard specifies blow-moulding technology requirements of the barrel, test methods and the rules and symbols, packaging, transporting and storage. This standard applies to polyethylene as the main raw material, barrels production through automatic blow molding machine,and this type of blow molding barrel is mainly used for solids or chemical products. We also can help to change any design as your requirements. such as size,weight,color,capacity ect.
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This is chemical setting Furan based chemical resistant mortar which is combination of Liquid and Powder, when mixed in proper proportion from workable mortar which after setting and curing give of liquid and give black highly cross linked composites. Furan When set and cured is resistant to highly corrosive acids, alkalis and to powerful organic solvents such as ketones, Aromatic and Chlorinated solvents. It has extreme resistant to Acidic & alkalis, Salts, Greases and Detergents. It resists to Organic & Inorganic acids at their boiling temperature. It is suitable against mild chlorine Gas (dry) phosphorous trichloride, pyridine at room temperature. Furan is especially useful where resistance to mixed media such as aqueous acids /alkalis and organic solvents is needed in chemical plant process and waste streams. Carbon filled Furan is used against corrosive effect of hydrofluoric acid & its salts. PREPARATION OF FURANE MORTAR : Mortar consist of Furan solution and Furan powder. The average mixing ratio necessary to obtain mortar with good working consistency is 1 part by weight Solution & 3 part by weight powder. The ratio will vary slightly depending on temperature and working conditions.Stir the liquid thoroughly before using. Place liquid in a suitable shallow mixing pan. Add powder by weight in the solution mix thoroughly and rapidly until all lumps are dispersed and the mortar is completely homogenous. Spread out the mortar in a thin layer, not more than ¾ thick, to dissipate the heat of reaction and lengthen the working life. Batch size can be varied depending upon the temperature and the speed with which the masons are working. Very large batches will become stiff quite rapidly. Make sure that all the Furan Motrar is used from the pan before another batch is mixed.When working at temperature above 40 C, very small batches not more than 2 Kgs, should be prepared. When working at temperature below 15C the liquid should be kept warm.
APPLICATION OF SK-HB K-SILICATE MORTAR : * K-SILICATE is used for jointing Acid Resisting brick in construction of vessels in suited for construction of fume chambers and stacks handling hot, dry Acid fumes and vapors. It is also used for jointing chemical resisting stoneware pipes. K-SILICATE cement is good bedding material for Acid â?? Resisting bricks and tiles. The concrete surface needed protection should be dryed, clean and rough. The bricks or tiles will be set with K-SILICATE cement over concrete surface applied with a suitable an impermeable interliner. When Bedding and Jointing Materials are the same. On the treated surface bricks or tiles are bedded to a thickness of about 6 mm and tamp gently with a wooden piece till the paste squeezes out of joints. The paste that is squeezed out of the joint should be removed by trowel with good finishing. After the mortar of the joint is dryed treat the joints with 20% Hydrochloric Acid Solution by means of brush. A.R.lining should be always in contact with Acid and not with water. Concrete subtract like Floor, Wall, tanks and similar surface should be protected with a membrane of Bitrok Mastic or compound steel tanks should be protected with rubber or PVC subjected to chemical conditions and temperature of chemical media. The Brick lining is recommended over the protective layer of Bitrok Mastic. When Bedding and Jointing Materials are Different. Spread the silicate type mortar about 6 to 8 mm thick on the back of the tile or brick. Press the tile on the bed leaving required space for joints between tiles for bricks. After the bedding mortar is set, fill Mp the joints with specified cement.PRODUCT DATA SHEET FOR SK-HB ( K-SILICATE) MORTAR A general purpose cement for acid conditions Resistant to High & medium concentrations of most of the common organic and inorganic acids except Hydroflouric acid. Recommended where the concentration of the acid is high suitable for high temperature. Unsuited to aqueous solutions, alkaline conditions. PREPARATIONS OF MORTAR : * Measure 1 part by weight of K-SILICATE solution into a suitable mixing pan. * Add slowly and gradually 3 parts by weight K-SILICATE mortar and mix thoroughly to form a smooth mortar. * In hot season very large batches of mortar will become stiff quite rapidly therefore small batches, not exceeding 4 to 8 kgs. Will be prepared. * The cement mortar will be used before it starts setting.
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