Hydrocolloid Gel Strength Calculator

Work out hydrocolloid gel strength instantly with clear inputs, formula shown and shareable results.

About Hydrocolloid Gel Strength Calculator

Gel strength rises roughly with the square of hydrocolloid concentration, so doubling the gum quadruples the strength. Divalent cations, particularly calcium, cross-link anionic gums such as alginate, low-acyl gellan and kappa carrageenan, raising strength substantially up to an optimum beyond which the gel becomes brittle and syneretic.

Formulas

Concentration dependence

Gel strength proportional to concentration^2

Calcium effect

Strength = base strength x calcium enhancement factor

Worked example

With the default values below, Hydrocolloid Gel Strength Calculator returns Predicted Gel Strength of 360.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Hydrocolloid Concentrationaccepts 0–10 %: 1 %
Gel Strength At Reference Concentrationminimum 0 g Bloom or g/cm2: 300 g Bloom or g/cm2
Reference Concentrationaccepts 0–10 %: 1 %
Calcium Ion Concentrationminimum 0 ppm: 200 ppm

Results

Predicted Gel Strength: 360.00
Gel Strength Before Calcium Effect: 300.00
Calcium Enhancement Factor: 1.2000
Concentration Ratio: 1.0000

Step by step

1Values used
2Concentration dependence
3Calcium effect
4Predicted Gel Strength= 360.00
5Gel Strength Before Calcium Effect= 300.00
6Calcium Enhancement Factor= 1.2000
7Concentration Ratio= 1.0000

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why does calcium matter so much for alginate?

Alginate gels by calcium bridging between guluronate blocks, not by cooling. Without calcium there is no gel, and calcium availability rather than temperature controls the set.

Does more calcium always give a stronger gel?

No. Beyond the optimum the network becomes over-crosslinked, brittle and prone to syneresis. Sequestrants are used to control the rate and extent of calcium release.