Plastic Limit Testers & Liquid Limit Apparatus for Soil

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Soil Testing Equipment

Standards

Qualitest offers a comprehensive range of Soil Consistency Testing Instruments, including high-performance Plastic Limit Testers, Casagrande Liquid Limit Devices, and advanced Digital Liquid & Plastic Limit Testing Apparatus. These devices are essential for geotechnical and civil engineering labs performing Atterberg Limit Tests to classify soil and determine its plasticity characteristics.

Compliance with International Standards

Our testing equipment conforms to all major standards for soil consistency tests:

ASTM D4318: Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils
AASHTO T90: Standard Method of Test for Determining the Plastic Limit and Plasticity Index of Soils
BS 1377-2: British Standard Methods of Test for Soils for Civil Engineering Purposes – Part 2: Classification Tests
UNE 103103 / UNE 10014: Spanish standards for determining plastic and liquid limits
NF P94-051: French standard for soil classification based on Atterberg limits

Why Choose Qualitest?

Full range of manual and digital soil consistency testers
Compliant with ASTM, AASHTO, BS, UNE, and NF standards
Robust, accurate, and easy to use
Competitive pricing with global delivery

Optimize your geotechnical testing with Qualitest’s reliable Plastic and Liquid Limit Testing Equipment. Contact us today for quotes, datasheets, or expert consultation.

Our Atterberg Limit Testing Devices are widely used in:

Geotechnical investigations
Soil classification in road and highway construction
Earthworks and foundation engineering
Quality control in construction projects

1. Plastic Limit Test Set (PL Test Kit)

This complete kit is designed for determining the Plastic Limit of soil as per:

ASTM D4318
AASHTO T90
BS 1377-2
UNE 103103 / UNE 10014
NF P94-051

Includes a ground glass plate, a brass or acrylic roller, moisture containers, and spatulas – everything required to perform precise PL determinations in the field or lab.

2. Manual Liquid Limit Device (Casagrande LL Apparatus)

Built to strict compliance with:

ASTM D4318
AASHTO T90
BS 1377-2
UNE 103104
NF P94-051

This rugged unit features a counterbalanced cup mechanism and a grooving tool, ideal for determining the Liquid Limit of cohesive soils. Available in both hand-crank and motorized versions.

3. Digital Liquid & Plastic Limit Tester – Dual-Function Model

This modern combined Atterberg Limits testing apparatus automates both PL and LL tests in one integrated system. It ensures enhanced accuracy, repeatability, and user convenience, especially suitable for high-throughput soil mechanics labs. Fully compliant with all major international standards listed above.

What Are Atterberg Limits?

Atterberg Limits define the boundaries between different states of soil consistency: liquid, plastic, and solid. The Plastic Limit (PL) and Liquid Limit (LL) are key indicators of a soil’s behavior under varying moisture content. Understanding these limits is critical in soil classification, foundation design, and predicting shrink-swell potential.

Plastic Limit Testers & Liquid Limit Apparatus for Soil | Available Products

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Digital Liquid & Plastic Limit Tester – Dual-Function Model