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Is it normal that the cell pellets from PromoCell (C‑14***) do not freeze at -20°C?

Yes. This is completely normal.
PromoCell cell pellets (C‑14***) are supplied in RNAlaterTM, and these samples do not freeze at -20°C. They remain liquid at both 4°C and -20°C.
 
Storage stability of RNAlaterTM samples 
  • Room temperature: stable for up to 1 week
  • 4°C: stable for up to 1 month
  • -20°C: can be stored indefinitely, even though the sample remains liquid
The liquid state at -20°C does not indicate a problem with sample integrity or stability.

Products relevant to this topic

NHEK.f Pellet
NHEK.f Pellet
Cat No C-14001
Cell pellet of NHEK from the epidermis of juvenile foreskin or adult skin in RNAlater® for subsequent RNA, DNA or protein analysis.
£153.00
NHEK adult Pellet
NHEK adult Pellet
Cat No C-14002
Cell pellet of NHEK from the epidermis of juvenile foreskin or adult skin in RNAlater® for subsequent RNA, DNA or protein analysis.
£119.00
NHEK.f pooled Pellet
NHEK.f pooled Pellet
Cat No C-14003
Cell pellet of NHEK from the epidermis of juvenile foreskin or adult skin in RNAlater® for subsequent RNA, DNA or protein analysis.
£136.00
NHEK adult, pooled Pellet
NHEK adult, pooled Pellet
Cat No C-14004
Cell pellet of NHEK from the epidermis of juvenile foreskin or adult skin in RNAlater® for subsequent RNA, DNA or protein analysis.
£102.00
Human Follicle Dermal Papilla Cells (HFDPC), Cell Pellet in RNAlater
Human Follicle Dermal Papilla Cells (HFDPC), Cell Pellet in RNAlater
Cat No C-14005
Cell pellet of HFDPC from human dermis of the scalp in RNAlater® for subsequent RNA, DNA or protein analysis.
£290.00
HUVEC Pellet, single donor
HUVEC Pellet, single donor
Cat No C-14008
Cell pellet of HUVEC 2 isolated from the umbilical vein in RNAlater® for subsequent RNA, DNA or protein analysis.
£109.00
HUVEC Pellet, pooled donors
HUVEC Pellet, pooled donors
Cat No C-14009
Cell pellet of HUVEC 2 isolated from the umbilical vein in RNAlater® for subsequent RNA, DNA or protein analysis.
£107.00
HUVEC Pellet
HUVEC Pellet
Cat No C-14010
Cell pellet of HUVEC from the vein of the umbilical cord in RNAlater® for subsequent RNA, DNA or protein analysis.
£109.00

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