Methylene Blue Test Set
STANDART: TS EN 933-9, NF P 94-068, UNE 83 180, UNI 8520-15
LT-A0075 Methylene Blue Test Set
Methylene Blue Test Set is used to determine the methylene blue value of the 0/2 mm fraction of fine aggregates or all-in aggregates. The test helps evaluate clay-type and other active fine particles present in aggregate samples. The set includes a 400/600 r.p.m. high-speed agitator, titration equipment and the main consumables required for a controlled and repeatable test procedure.
- Fine Aggregate Assessment: Evaluates active fine particles in aggregate samples.
- 0/2 mm Fraction Testing: Determines the methylene blue value of fine or all-in aggregates.
- Dual Mixing Speed: Agitator operates at 400 and 600 r.p.m.
- Controlled Titration: Includes a 50 ml glass burette, holder, clamp and stand.
- Complete Test Arrangement: Supplied with a 2000 ml handled plastic beaker and glass stirring rod.
- Methylene Blue Powder: Includes 100 g methylene blue.
- Kaolinite: Includes 500 g kaolinite.
- Filter Paper: Supplied with Ø125 mm, 100 pcs filter paper.
- Compact Laboratory System: Main unit dimensions are 500 × 870 × 270 mm.
- Weight: Approximately 15 kg.
- Power Supply: 240 V, 50–60 Hz, 1 phase.
- Product Code: LT-A0075.
- Standards: EN 933-9, NF P 94-068, UNE 83 180 and UNI 8520-15.
| Product Code | Product Name | Dimensions (mm) | Weight (kg) | Power Supply |
| LT-A0075 | Methylene Blue Test Set | 500 × 870 × 270 | 15 | 240 V, 50–60 Hz, 1 ph |
| LT-A0076 | High Speed Agitator Motor, 400/600 r.p.m. | — | — | — |
| LT-A0077 | Methylene Blue, 100 g | — | — | — |
| LT-G0735 | Kaolinite, 500 g | — | — | — |
| LT-A0078 | Filter Paper, Ø125 mm, 100 pcs | — | — | — |
LT_METHYLENMAVISI_
What Is a Methylene Blue Test Set?
The Methylene Blue Test Set is designed to determine the methylene blue value of fine aggregates and all-in aggregates. The test evaluates the 0/2 mm aggregate fraction and provides information about the presence of clay-type and other active fine particles.
The method is based on the adsorption of methylene blue by fine particles suspended in water. As methylene blue solution is added to the sample, active particles adsorb the dye. The endpoint is then checked using the specified filter paper procedure.
The current EN 933-9:2022 standard defines the reference method for determining the methylene blue value of the 0/2 mm fraction of fine or all-in aggregates.
400/600 r.p.m. High-Speed Agitator
The set includes a high-speed agitator with 400 and 600 r.p.m. operating speeds. Controlled agitation keeps the aggregate suspension moving throughout the test.
This is important because the methylene blue solution must interact uniformly with the fine particles in the sample. Consistent mixing also helps laboratories reproduce similar test conditions during repeated analyses.
The operator selects the required mixing speed according to the test procedure and continues agitation while the methylene blue solution is added.
Controlled Titration System
A 50 ml glass burette is included for controlled addition of the methylene blue solution. The set also contains the required burette holder, stand and clamp.
During the test, the solution is added gradually to the aggregate suspension. After selected additions, a drop of the suspension is placed on the filter paper.
The appearance of the stain is used to evaluate whether the test endpoint has been reached. This procedure provides a practical visual method for monitoring methylene blue adsorption.
Complete Laboratory Test Arrangement
The set includes a 2000 ml handled plastic beaker and a glass stirring rod for sample preparation. It is also supplied with 100 g of methylene blue powder, 500 g of kaolinite and 100 pieces of Ø125 mm filter paper.
This complete configuration allows the laboratory to prepare the test arrangement without sourcing the main test accessories separately.
Methylene Blue Value of Fine Aggregates
The methylene blue value is particularly useful when assessing fine aggregate fractions containing clay minerals or other highly adsorptive fines.
A higher result generally indicates a greater quantity or activity of methylene-blue-adsorbing fine material. However, the value should always be interpreted together with the relevant aggregate specification and project requirements.
The test is therefore commonly used in aggregate production, concrete laboratories and construction-material quality-control applications.
EN 933-9 Methylene Blue Test
EN 933-9:2022 is the current European method for the assessment of fines by the methylene blue test. BSI lists the 2022 edition as the current release.
The LT-A0075 Methylene Blue Test Set combines controlled agitation, titration equipment and the required test consumables in one laboratory system. It therefore provides a practical and repeatable solution for determining the methylene blue value of aggregate fines.
