Organic Impurities Test Equipment for Fine Aggregates
The organic impurities test evaluates fine aggregate for organic material using a color-comparison procedure. This category supplies the equipment: test sets, sample bottles, sodium hydroxide reagent and color-reference standards. It supplies equipment for laboratory testing, not testing services.
Start with a Complete Test Set
Compare the organic impurities test set and the set supplied with sodium hydroxide pellets. Check each set's current supplied-parts list before ordering; the difference between the two listings is the included reagent, and neither listing should be assumed to include every consumable your procedure needs.
Match the Bottle and Reagent
The organic impurities test bottle provides the sample vessel with lid. Verify its capacity and marking suitability against the specified sample volume rather than substituting any laboratory bottle.
For reagent, compare the reagent-grade sodium hydroxide pellets with the pellets listed for the organic impurities test. Confirm the grade and quantity required by your procedure. Sodium hydroxide is corrosive: follow the safety data sheet and laboratory chemical-handling requirements for storage, use and disposal.
Select the Color Reference
The organic impurities color wheel reference chart provides the comparison standard for evaluating solution color. Check that the reference matches the color scale your method prescribes before relying on it for comparisons.
The category also lists Gardner liquid color standards in several values. These are general color-reference liquids; confirm their documented use before treating them as the prescribed standard for an aggregate impurities comparison.
Keep Aggregate Evaluation Together
For companion aggregate evaluation, use the aggregate testing equipment categories. A color-comparison result indicates the presence of organic material; it does not by itself quantify strength effects. Follow the applicable test method and manufacturer instructions for sample preparation, standing time and comparison; this guide does not set acceptance criteria.
