When Pfizer transports vaccines with dry ice, where is the risk?

Yes, vaccines and Hagendas a treat.
, many new crown vaccines are already in circulation.
reports of new crown vaccines in hundreds of millions of units have come and went, but whether the vaccine can be arranged depends on transport capacity and storage methods.
, such as the previously favored BioNtech/Pfizer vaccine, scared a group of people by storing it at minus 80 degrees Celsius.
After all, hardware facilities can meet this condition of the transport company is not many, even because of this extreme temperature requirements, pulled up a large number of low-temperature cold chain stocks, domestic enterprises Haier also because of its Haier biological involvement in low-temperature medical products and frequently good.
, bioNtech/Pfizer vaccines are the most demanding to be shipped and stored, according to a study.
Photo Source: Guosheng Securities Research Institute this degree of harshness is even likely to affect market share, but now Pfizer has let out the wind to say, because of raw materials problems, the original capacity of 100 million units to be cut in half.
the remaining 50 million? I didn't think the answer was dry ice!Dry ice, or solid carbon dioxide, sublimation temperatures are -78.5 degrees Celsius.
, which theoretically sustains an environment of minus 70 to 80 degrees Celsius, is in line with the vaccine.
but the problem with dry ice is that it sublimation is a consumable.
common ultra-low temperature refrigerators consume electricity without considering additions, while dry ice must take into account the addition of intermediate processes.
and dry ice sublimation process solid gas, will produce great pressure, insulation box if the sealing is too good, once the temperature may be too high risk of explosion, so it is still not suitable for long-distance transport.
, of course, Pfizer has chosen dry ice, which must have been temperature-tested, taking into account these risks.
Pfizer has designed a special ice box that keeps dry ice inside for up to 10 days, according to the Guardian.
So domestic transport is feasible, and this vaccine can not see the light or violent bumps, a batch of preparations can withstand up to four loading and unloading, transport costs are still very high.
supply experts pointed out that cold chain transportation can account for 80% of the total cost.
after all, the common cold chain is also -20 degrees Celsius and 2-8 degrees Celsius mainly, the original cold chain level can not be satisfied.
in fact, transportation and preservation has never been the focus of vaccines.
the most remote areas of the country where the polio vaccine was available, it was difficult in an age when many areas were without electricity.
according to the relevant personnel, the final transport is mostly warm water bottles and ice sticks way, compared with the current conditions have been very different.
in order to ensure the conditions of transport, all countries are working hard, but the most cost-effective attack on the consecists are The Science and Technology.
others are trying to buy transportation equipment, dry ice, buy refrigerators to achieve transport safety.
doesn't speak at all about Wude, which is produced directly in Brazil and produces 1 million doses a day.
can imagine a scene at the negotiating table: facing the "how do you secure supply" question.
other enterprises: buy dry ice, buy a car, buy a refrigerator, buy a cold chain, to ensure that the past is still cold! Koxing: I'll make a production line at yours, cooperate in research and development to save money, and promote your local employment rate.
as dry ice takes over the runway for refrigerators, the local production model squeezes transport directly.
since the transportation cost is so high, near production is of course the best.
like a vaccine takes up the ice cream's insulation box, safe landing, is a good process.
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