Laboratory aliquot freeze-thaw ledger calculator

Calculate aliquot histories and policy flags with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use aliquot histories and policy flags to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Aliquot thaw events [aliquot ID,time Unix seconds]
[["A",100],["A",200],["B",150]]
User-supplied maximum thaw cycles
1
Aliquot histories and policy flags
[["A",2,[100,200],"Above supplied cycle limit"],["B",1,[150],"Within supplied cycle limit"]]

Try another scenario

Aliquot thaw events [aliquot ID,time Unix seconds]
[["A",100],["A",200],["B",150]]
User-supplied maximum thaw cycles
2
Aliquot histories and policy flags
[["A",2,[100,200],"Within supplied cycle limit"],["B",1,[150],"Within supplied cycle limit"]]
Calculation method

Calculation method

Aliquot histories and policy flags

Sort events by time per aliquot; count cycles, flag count>supplied limit; each row is one thaw event.

Symbols and units
a
Aliquot thaw events [aliquot ID,time Unix seconds]
b
User-supplied maximum thaw cycles

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Sample aliquots, thaw events, supplied maximum cycles. Returns Usage history and policy flags. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. User-supplied maximum thaw cycles: minimum 0, maximum 1000.
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