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Documentation Index

Fetch the complete documentation index at: https://docs.chemolytic.com/llms.txt

Use this file to discover all available pages before exploring further.

Properties are defined once per project and used by all samples in that project. Go to Samples in the project sidebar and click the Properties tab.
Properties tab showing property cards with name, type, unit, and categories

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Creating a property

Click Add property to open the create dialog.
New property dialog with name, type toggle (continuous/categorical), and unit field

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Fields

FieldRequiredNotes
NameYesUnique within the project. Max 100 characters. Case-sensitive.
TypeYesContinuous or Categorical. Cannot be changed easily after samples have values.
UnitNo (continuous only)Free-text label. Examples: °Bx, mg/L, %, pH. Max 50 characters.
CategoriesYes (categorical only)Minimum 2 categories. Each up to 100 characters.

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Continuous properties

Select the Continuous toggle. Enter an optional unit. The unit is shown in the samples table next to the value. Common units: %, °Bx, mg/L, pH, g, ppm, mol/L.

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Categorical properties

Select the Categorical toggle. Type each category name and press Enter (or click Add) to add it. Click the X on a pill to remove it.
You must add at least 2 categories. The error “Add at least 2 categories” appears if you try to save with fewer.
Decide your full category list before adding samples. Adding a category later is fine, but renaming or removing one will break existing sample targets.

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Editing a property

Hover over a property card and click the pencil icon. You can change the name, type, unit, and categories.
Changing the type of a property after samples have values can invalidate those values. For example, changing Continuous to Categorical will reject any existing numeric value that doesn’t match a category.

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Deleting a property

Hover over a property card and click the trash icon.
You can only delete a property that has no sample targets referencing it. If any sample has a value for this property, you must clear those values first. The error message is: “Cannot delete ''. It has sample targets associated with it.”
To remove a property that’s in use:
  1. Clear the column in your CSV and re-import (sets all values to empty for that property), or
  2. Edit each sample manually and remove the property value
  3. Then delete the property

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Common errors

Property names are unique within a project. Use a different name or rename the existing property first.
Some samples still have values for this property. Clear those values (manually or via CSV) before deleting.
Categorical properties must have at least 2 distinct category values. Add more categories or switch to Continuous.
The categories list is only for categorical properties. Switch the type or remove the categories.