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Kashiwa Kousei General Hospital has been 
involved in supporting Covid-19 vaccinations 
efforts using PHCbi freezers. Here, we inter view the Pharmacy Director of the hospita.
Efficient and safe vaccinations enabled by PHCbi freezers
Kashiwa Kousei General Hospital, located in Kashiwa 
City, Chiba Prefecture, has a long history of providing 
high-quality, patient-centered medical care. For 24 hours 
a day, 365 days a year, the hospital provides emergency 
care and is actively introducing highly advanced medical 
treatments such as robotic surgery and cryotherapy for 
malignant tumors. The hospital also focuses on 
preventive medicine and appropriate management of 
chronic diseases, and is highly trusted by local residents 
and patients nationwide.
As a core regional hospital, it has continued to make 
every effort to ensure the safety and security of people 
throughout the Covid-19 pandemic. One of its efforts 
focuses on the large-scale vaccination of patients using 
the Covid-19 vaccine. The PHCbi MDF-C8V1 ultra-low 
temperature freezer made this possible. We interviewed 
Mr. Matsuki, Director of the Hospital's Pharmacy, about 
the background and use of the freezers.
Ultra-low temperature chest freezers that do not easily change temperature when being loaded or unloaded
“We decided to install the PHCbi ultra-low-temperature 
freezers in order to facilitate the large-scale and efficient 
administration of the Covid-19 vaccine," says Pharmacy 
Director Matsuki.
Pfizer's Covid-19 vaccine can only be stored in a regular 
freezer for up to 14 days. If stored longer than that, it 
must be maintained at -75°C. This requires an ultra-low 
temperature freezer such as the MDF-C8V1, which can 
cool products to between -65 to -85°C.
The MDF-C8V1 is a chest freezer with a lid on top. Its 
features include low leakage of cold air when the door is 
opened and closed, and a stable internal temperature 
environment suitable for long-term storage of sensitive 
products.
“The vaccine arrives from Pfizer in a shipping box with 
dry ice keeping it at an ultra-low temperature. When you 
open the box, there is dry ice all around with the vaccine 
in the center."
There are 195 vials in each box. Each vial provides six 
doses, which works out as 1,170 doses. The vaccines are 
removed from the box and quickly transferred directly 
into the ultra-low temperature freezer. In the freezer, 
vaccines can be stored for up to their expiration date 
(approximately 9 months after being manufactured 
overseas). In this sense, the MDF-C8V1 has been well 
received for how easy it is to use.
Ease of removal: Convenient pharmaceutical refrigerators for thawing vaccines
“When we use the vaccine, we defrost it in the refrigerator before we use it," continued Matsuki.
The vaccine is defrosted in the PHCbi MPR-S300H/ MPR-514 pharmaceutical refrigerators. 
Their glass doors make it easy to see the contents, making them suitable for storing vaccines that need to be taken in and out within a short period of time.
“We administer vaccines only after a reservation is made, so we thaw the vaccines according to the number of reservations. 
We first dilute the vaccines with a saline solution and then administer them, but they must be administered within 6 hours after dilution. 
Therefore, we plan by only storing the morning doses in the pharmaceutical refrigerator, 
then store more in the afternoon, and so on, in small portions depending on the administration times.”
The hospital began its large-scale Covid-19 vaccinations in May 2021. 
It reached an average of about 5,500 vaccinations per week in late June, 
about twice the target of Kashiwa’s large-scale vaccination center. 
The implementation of the MPR-S300H/MPR-514 pharmaceutical refrigerators supported the efficient rollout.
From March 2022, the hospital also began accepting reservations for the 3rd vaccine dose for those 12 years of age and older, as well as for the 1st and 2nd doses for 
children. Kashiwa Kousei General Hospital will continue to provide medical care for its community.
 
Supplied Equipment 
·Ultra-Low Temperature Freezer: MDF-C8V1-PJ
·Pharmaceutical Refrigerators: 
 MPR-S312DCN-PJ x 2 , MPR-514R-PJ, MPR-S300H-PJ
·Live cell metabolic analyzer: RINkS
·Automatic tablet packaging machine:ATC-256GR1-PJ
·Counting dispensing audit system
·Powdered drug audit system: AIC-PKS