In laboratories, the most common experimental objects are cells. The safety of cells is related to the accuracy of experimental results. Therefore, they need to be stored in a low-temperature environment. At this time, experimenters usually choose a cell freezing container, using -196�° liquid nitrogen to maintain low temperature. Its vacuum structure can provide a stable low-temperature environment for cells. However, there are also disadvantages. Liquid nitrogen is easily volatile. Although the vacuum structure can effectively reduce it, the surrounding environment will also have an impact.
Therefore, when using cell freezing containers, there are requirements for the storage environment.
Ambient temperature requirements:
A suitable temperature will reduce the volatilization of liquid nitrogen, while an excessively high temperature will accelerate the volatilization.
Just like summer and winter, the temperature difference between the two seasons is large, and the volatilization in summer will be much higher than that in winter.
The suitable temperature for cell freezing containers is about 20�°, and they can be stored in a cool room or dark place, away from direct sunlight and high temperature environments, to reduce the impact of heat on the tank.
Ventilation requirements:
It should be placed in a well-ventilated area, away from sources of fire and flammable materials. In order to prevent the discharge of volatile liquid nitrogen, the environment is too sealed and cannot dissipate quickly. It also competes with oxygen for space, causing workers to suffer from hypoxia and suffocation.
Storage requirements:
The inner and outer bladders of the container are only connected by the neck tube, which is relatively fragile. To prevent the neck tube from rupturing due to stress, we should store it vertically. At the same time, pay attention to avoid collisions during the movement of the jar to prevent the neck tube connection from falling off and causing damage to the vacuum.
This is the storage environment requirement of cell freezing containers.
Specifications 1.odorless 2.low VOC 3.antimicrobial 4. mildew resistant 5.environmentally friendly 6.waterproof 7.Scrub resistance Description It is an enhanced mildew proof product adopting nano-scale Ag+ antimicrobial and mildew proof technology, integrating odorless formula, with fresh product smell, smooth paint film, durable and beautiful paint.As an affordable and environmentally friendly product with excellent decorative performance, it is characterized by fresh smell, environmental health, strong covering power, large painting area, convenient constructionapplication, short constructionapplication period, etc. Specification Data Solvent: Water Pigment: Non-lead pigment Theoretical Solids By Volume: more than 50% Theoretical Coverage: Theoretically 1 litre of this product covers 12 sqm in 1 coat Coverage varies considerably depending on application methods and surface roughness and porosity. Shelf Life: Minimum 12 months at 77F(25C) unopened and store in cool and dry places. Recommended Film Thickness: Wet: 80 micron Dry: 30 micron Dry Time: At 77F (25C) and 50% R.H. to recoat Touch Dry: 1 hours Recoat : 2-3 hours Application: Brush, Roll, conventional spray or Airless Spray. Thinner: Thin up 15% depend on different application methods & temperature. Do not over thin by adding more than 30% water. Brush or Roller: For sealing new or bare surfaces thin with up to 1 part of clean water to 5-10 parts of paint(10%-20%) Conventional Spray: Add up to 1 part clean water to 5 parts paint(20%) Airless spray: do not thin Clean-up: Clean up equipment with water Typical painting system Substrate System All kinds of Wall surfaces 1.Alkali Resistance Primer (1 coat) 2.Emulsion Wall Paint (2 coats)
1. When you just fill a pool of new water, it rains heavily suddenly, which makes you very depressed. Whether you still want to go on swimming. Swimming pool cover can keep out wind and rain and snow and ice for you,Any weather can not affect you enjoy into the water. 2.You are a swimming lover. Whether you particularly hope to extend your summer time. Swimming pool cover can expend your swimming season,you can enjoy the fun of useful under the transparent pool room which provided UV protection,Or you can directly open the swimming pool cover,Shared with family or friends at the water's edge which have health and comfortable swimming environment throughout the year. 3, UV resistant 50 microns UV resistant layer, let you skin not sunburn and peeling after swimming. 4.When you are making delicious food in your kitchen, your children may be ready to go swimming personal. Whether you want a special door to lock your swimming pool at that time, Limited the children close to the pool,prevent children or animals fell into the pool, The Whole family will be assured. 5.In order not to waste water, you are not willing to see worms and leaves in your swimming pool ! 6, constant temperature swimming No matter how cold in the winter, we can provide you with the pool heating equipment, keep your swimming pool constant temperature forever! Today, we offer you an amazing view in your garden---- a modern, comfortable and safe swimming pool roofing! Whether in front of your balcony or in the middle of your garden, the roofing can mix harmoniously together with surrounding environment without obstructing your view.
We offer GREY CEMENT (42.5) that is used in construction projects. We can supply it in container or vessel shipment.
Supplier: Dates, olive oil, olive, salt, fruits and vegetables, cement, gypsum, silica sand, clinker, lime, dolomite, bentonite, kaolin products, dolomite lime, marble powder, marble grit, granulated slag, steel slag, carton boxes.
TUMI ISHI WOODEN BALANCING Tumi ishi wooden balancing stones are a new take on the classic wooden building block. We believe toys can be both fun and inspire creativity and new ways of thinking. The Tumi Ishi wood rocks are a simple sensory toy set that will offer children as young as two with a way to enhance their motor skills in a soothing manner. The Tumi Ishi toys -- which translates to "piled stones" from Japanese -- draws inspiration from the traditional art form and come in sets of seven, 11, 17 and 22 to accommodate kids or adults with different preferences.
Supplier: Sunflower oil, ibc tanks, scraps, nuts, containers, sweet corn, cream milk powder, pets foods, eggs, en590 diesel, petroleum coke, jeta1 and other petroleum products
GOOD GRADE OCC WASTE PAPER SCRAP MADE IN USA GRADE 11 AND 12 Place of Origin : JAPAN, US, EUROPE Materials : Waste Paper Type : OCC, ONP, OMG, YELLOW PAGES, A3, A4 WASTE PAPER Color : Mixed & NOT MIXED Unit : Ton/Tons Minimum Order : 20 Tons Payment Term : T/T 50/50 and L/C 100% at sight Shipping Lines : Ocean shipping Estimate Lead Time : 15 - 20 days Shipping Origin : Tokyo, Yokohama, Hamburg, New York, Long Beach Supplying Capacity : 200 tons/month Packaging : Bale (1.2-1.4 Tons/Bale), 20-25 Tons loading 40FT container
Feldspar is the name given to a group of minerals distinguished by the presence of alumina and silica (SiO2) in their chemistry. This group includes aluminum silicates of soda, potassium, or lime. It is the single most abundant mineral group on Earth. They account for an estimated 60% of exposed rocks, as well as soils, clays, and other unconsolidated sediments, and are principal components in rock classification schemes. The minerals included in this group are the orthoclase, microcline and plagioclase feldspars. APPLICATIONS Glass making Ceramics Porcelain Electrodes Abrasion We at CEMENTATION produce Feldspar of minerals containing Potassium and Sodium. Our supply is available in Lumps, Granules and Powder form.