Belzer UW® Cold Storage Solution does not require filtering before use or refrigerated routine storage.
However, please note that the solution must be cooled to 2° to 6°C (36° to 43°F) prior to use.

Belzer UW® Cold Storage Solution

Ingredient g/L mmol/L
Hydroxyethyl starch (Pentafraction) 50.0 NA
Lactobionic acid (as Lactone) 35.83 105
Potassium dihydrogen phosphate 3.4 25
Magnesium sulfate heptahydrate 1.23 5
Raffinose pentahydrate 17.83 30
Adenosine 1.34 5
Allopurinol 0.136 1
Total Glutathione 0.922 3
Potassium hydroxide* 5.61 100
Sodium hydroxide/Hydrochloric acid (adjust to pH 7.4)
Water for injection q.s.

ViaSpan®

Ingredient g/L mmol/L
Hydroxyethyl starch (Pentafraction) 50.0 NA
Lactobionic acid (as Lactone) 35.83 105
Potassium dihydrogen phosphate 3.4 25
Magnesium sulfate heptahydrate 1.23 5
Raffinose pentahydrate 17.83 30
Adenosine 1.34 5
Allopurinol 0.136 1
Total Glutathione 0.922 3
Potassium hydroxide 56%* 14.5 100
Sodium hydroxide/Hydrochloric acid (adjust to pH 7.4)
Water for injection q.s.

* Please note that while the g/L of potassium hydroxide for ViaSpan vs Belzer UW is different, the mmol/L is the same. This is due to the difference in concentration of potassium hydroxide used.