GCL Hydrostatic Pressure Tester (2.5 MPa)

GCL Hydrostatic Pressure Tester (2.5 MPa)

Skip to product information
GCL Hydrostatic Pressure Tester (2.5 MPa)
  • GCL Hydrostatic Pressure Tester (2.5 MPa)
GCL Hydrostatic Pressure Tester (2.5 MPa)
SKU:

GCL Hydrostatic Pressure Tester (2.5 MPa)

Get personalized pricing for your specific requirements

GCL Hydrostatic Pressure Tester (2.5 MPa) – QualiGTX™ GCL HS

The QualiGTX™ GCL HS is designed to measure the maximum water pressure a sodium bentonite geosynthetic clay liner (GCL) can withstand before water penetrates through its thickness. This measurement helps materials laboratories, GCL manufacturers, and construction quality control teams determine whether liner rolls meet specified project acceptance criteria. During testing, the instrument applies controlled water pressure to a securely mounted Φ55 mm specimen and monitors its resistance over a defined period using an integrated digital timer.

A high-strength aluminum alloy specimen holder provides the rigidity required for pressure testing without making sample handling unnecessarily difficult. Its lightweight construction allows a single technician to install and remove specimens efficiently, particularly when processing large testing batches. With a maximum pressure capacity of 2.5 MPa, equivalent to approximately 250 meters of water head, the instrument accommodates testing requirements for landfill barriers, reservoirs, and deep underground structures using a single laboratory system.

The complete testing procedure is managed through a large color touchscreen, which provides access to pressure settings, test duration, and real-time operating status. Automatic timing eliminates the need for manual stopwatch operation and helps maintain consistent testing procedures. Its compact, low-profile configuration also makes the QualiGTX™ GCL HS suitable for installation alongside permeability and swell index testing equipment in geosynthetics laboratories.

GCL Hydrostatic Pressure Tester (2.5 MPa) – QualiGTX™ GCL HS Applications

The QualiGTX™ GCL HS supports quality assessment, production inspection, and material evaluation wherever sodium bentonite blankets provide hydraulic containment or waterproofing. Its applications include:

  • Landfill Containment and Closure Systems: Determines whether GCL materials can resist the leachate pressure head required by landfill base liners, side slopes, and closure designs.

  • Bentonite Blanket Manufacturing Quality Control: Supports production batch inspection by identifying inconsistent bentonite distribution and inadequate needle-punch bonding before finished rolls are released for delivery.

  • Canals, Reservoirs, and Water Retention Facilities: Assesses the ability of bentonite liners to maintain an effective water barrier under prolonged hydrostatic loading in irrigation channels and raw water storage installations.

  • Tunnel and Underground Waterproofing: Evaluates GCL performance under groundwater pressure behind tunnel linings, diaphragm walls, and basement floor slabs.

  • Mining and Industrial Liquid Containment: Checks barrier integrity in tailings storage facilities, heap leach pads, and evaporation ponds where containment of process solutions is essential.

  • Independent Materials Testing Laboratories: Provides third-party performance verification of manufacturer and supplier claims for procurement assessments, tender submissions, and technical dispute resolution.

  • Municipal Infrastructure Quality Inspection: Allows inspection teams to assess delivered GCL rolls against acceptance requirements before installation begins at the construction site.

  • Geosynthetic Material Research and Development: Facilitates comparative testing of different bentonite grades, carrier geotextiles, and manufacturing bonding methods to evaluate their influence on hydraulic resistance.

GCL Hydrostatic Pressure Tester (2.5 MPa) – QualiGTX™ GCL HS Key Features

The QualiGTX™ GCL HS combines controlled pressure application with straightforward specimen handling and automated test monitoring, making extended hydrostatic resistance evaluations easier to conduct consistently.

  • Maximum Pressure of 2.5 MPa: Provides a broad testing range for standard material acceptance procedures as well as demanding applications involving deep burial conditions and elevated groundwater or liquid pressure.

  • High-Strength Aluminum Alloy Specimen Holder: Maintains a stable specimen assembly under applied hydraulic pressure while keeping the holder lightweight enough for convenient handling and faster specimen replacement.

  • Large Color Touchscreen: Brings pressure settings, elapsed testing time, and current operating conditions together on one screen for convenient monitoring throughout the procedure.

  • Automatic Digital Timer: Controls and tracks the specified pressure-holding period without requiring continuous manual stopwatch operation, reducing the possibility of timing inconsistencies and operator-related errors.

  • Compact Bench-Mounted Design: Features a low-profile, space-conscious structure that fits standard laboratory workbenches and can be positioned alongside other geosynthetic testing instruments.

  • Straightforward Test Operation: Minimizes setup complexity and manual adjustments, allowing laboratory technicians to perform testing without an unnecessarily complicated operating procedure.

  • Full-Circumference Specimen Sealing: Secures the specimen around its entire perimeter to prevent water from escaping at the edges, ensuring that the applied pressure acts across the specimen surface during evaluation.

Theory and Test Method

The water resistance of a geosynthetic clay liner comes primarily from the hydration and expansion characteristics of sodium montmorillonite, the principal clay component of sodium bentonite. When exposed to water, the clay absorbs moisture between its mineral layers and expands within the confinement provided by the surrounding carrier geotextiles. This expansion consolidates the bentonite into a dense, gel-like barrier that fills available voids and restricts continuous water-flow channels.

Unlike geomembranes, which depend largely on the mechanical integrity and strength of a continuous polymer sheet, GCLs achieve their sealing performance through the hydraulic behavior of confined, hydrated clay. Hydrostatic pressure testing therefore determines whether the bentonite develops a sufficiently continuous barrier and retains its water-blocking capability under sustained hydraulic loading.

For the test, a specimen is secured inside the aluminum alloy holder, creating a sealed assembly around its circumference. Water is introduced into the chamber above the specimen, and the system progressively increases the pressure until the programmed test level is reached. The specimen holder maintains the perimeter seal so that the pressure difference acts across the bentonite blanket itself rather than being lost through leakage around its edges. The appearance of water on the opposite, downstream surface indicates breakthrough and marks the end of the test.

The length of time a specimen withstands the applied pressure is just as important as the pressure level it resists. Bentonite continues to absorb water and undergo internal rearrangement throughout exposure to hydrostatic loading. Consequently, a specimen may remain intact during the initial pressure increase but develop a leakage path after prolonged exposure to the same pressure.

The QualiGTX™ GCL HS addresses this requirement through automatic timing of the programmed holding period. The integrated digital timer tracks the complete test duration, allowing the operator to assess whether the specimen maintains its hydraulic barrier throughout the specified interval. This time-based evaluation provides laboratories with a more reliable basis for determining pass-or-fail performance than a measurement taken immediately after reaching the target pressure.

GCL Hydrostatic Pressure Tester (2.5 MPa) - QualiGTX™ GCL HS Technical Specifications

Parameter Specification
Specimen Diameter Φ55 mm
Maximum Test Pressure 2.5 MPa
Specimen Holder Material High-strength aluminum alloy
Control System Large color touchscreen with automatic digital timing
Voltage 220 V, 50 Hz (110V is also available)
Dimensions (W × D × H) 700 × 750 × 1200 mm
Net Weight 75 kg

Delivery time varies upon stock availability. Our standard dispatch and shipping times are generally within 1 week, however for some high demand items the delivery may be extended to 2-3 weeks. If you require these items urgently please contact us to check accurate stock availability and to organize faster shipping methods.

🚚

Important Delivery Information

Delivery time varies upon stock availability. Our standard dispatch and shipping times are generally within 1 week, however for some high demand items the delivery may be extended to 2-3 weeks.

Need it urgently? Contact us here to check stock and organize faster shipping.

Orders:
Purchaser acknowledges that when placing an order on the Qualitest:

A. the placing of the order signifies the purchaser's assent to place said order at the Qualitest and that the order will be accepted by the successful processing of the order by Qualitest USA LC.
B. the purchaser typing their name when requested to do so by the Qualitest constitutes a signature to contract
C. the purchaser has the full authority to enter into the contract for such entity, and such grant of authority was indicated by purchaser by placement of the order through the Qualitest.
D. A minimum handling fee will be applied to the shipping total for all orders.

Shipping within the U.S.A.:

All orders will be shipped best way prepaid, via courier for smaller packages or via Freight forwarders for larger crates. A handling fee may be applicable to orders. Title to merchandise transfers to the purchaser upon delivery to the carrier. Loss or damage in transit is the responsibility of the purchaser. Qualitest USA will provide assistance with information needed for processing claims.

Shipping outside of the U.S.A.:

All orders will be shipped best way, via courier for smaller packages or via Freight forwarders for larger crates. A low handling fee may be applicable. Title to merchandise transfers to the purchaser upon delivery to the carrier. Loss or damage in transit is the responsibility of the purchaser. Qualitest USA will provide assistance with information needed for processing claims. Export fees, duties, taxes, and customs clearance are the responsibility of the purchaser.

Shipping insurance is not included, please contact our sales representatives if you need shipping insurance.

Partial shipment: Qualitest USA reserves the right to make partial shipments unless otherwise instructed by the purchaser.

Payment terms: All payments to Qualitest USA are to be made in U.S. Dollars (USD)

A. Credit Card - Qualitest USA will accept Visa, Master Card, AMEX or Discover. Required information from the purchaser is the credit card number, 3 digit security code, expiration date, card holder's name (exactly as it appears on the card), billing address, and valid telephone number for us to use in case of difficulty. Qualitest USA reserves the right to delay shipment pending verification of credit card validity.
B. Wire Transfer - Transfer must be made to Qualitest and confirmed for the full purchase amount (merchandise, handling and shipping) prior to shipment. Please contact us by phone at 1.877.884.TEST (8378)(outside U.S. +1.905.944.9825) or by fax at +1.954.697.8211 for bank information.
C. Open Account - Available to U.S.A. and Canadian customers only. Terms on open accounts are Net 30 days from date of shipment. Qualitest USA reserves the right to refuse shipment of new orders if any unpaid invoices are older than 30 days. Purchasers may apply for an open account by providing:

their bank information
3 credit references from other suppliers
Please allow 5 business days for confirmation of credit and creation of an open account.

Return Policy:

Qualitest USA may accept return of purchased merchandise within North America for refund or credit under the following conditions -

  • There may be an additional restocking fee charged to the transaction if items are already shipped to customer.
  • Goods must be returned to Qualitest USA within 5 days of the date of the receipt of the purchased goods.
  • All freight, duties, customs, and other related shipping charges for the returned merchandise are borne by the purchaser. Shipments made freight collect will be refused.
  • Merchandise must be returned properly packaged in brand new, salable condition, along with original packaging and all documentation, accessories and certificates.
  • Purchaser has confirmed return authorization directly with Qualitest.
  • Merchandise is regular catalog item. Special order items can not be returned.
  • All returned merchandise is subject to inspection by Qualitest. Qualitest reserves the right to refuse return of any merchandise that is used, damaged, or not part of the current published price list. In the case Qualitest does not accept the returned merchandise, reasonable attempts will be made to notify the Buyer and the merchandise will be returned to Buyer as they were received by Qualitest. Damaged merchandise that can be restored to original condition and thus accepted for return will be evaluated on an individual basis. The purchaser will be advised of additional expenses for the repair and restoration of the returned item. After approval, these expenses will be charged to the purchaser in addition to the restocking fee.


Change of Terms:

The acceptance of any order by Qualitest USA is subject to purchaser's assent to all of the terms and conditions set forth herein. Purchaser's assent to these terms and conditions shall be presumed from the purchaser's placement of an order through the Qualitest. Any and all other terms and conditions are expressly rejected, and no addition or modification of terms and conditions shall be binding without the prior agreement of Qualitest USA in writing.

Complete Agreement:

The terms and conditions in the Qualitest web site, incorporated herein by reference, including forms, acknowledgements, quotations, invoices and sales terms and conditions constitute the entire and exclusive agreement between the purchaser and Qualitest USA LC.

Information:

Qualitest USA makes every effort to insure the accuracy of the product information displayed on its web sites, but makes no warranties, expressed or implied, as to the accuracy of the data portrayed on the web sites. Qualitest USA reserves the right to change product information, including pricing information at any time without notice. 

Trademarks and Copyrights:

The WorldofTest.com Qualitest contains trademarked product names. Product names are not to be reproduced or used in any fashion by any party other than Qualitest without the express written consent of Qualitest International Inc.. All pictures, descriptions, and other content of this web site are copyrighted by Qualitest USA and may not be used without the express written permission of Qualitest USA. Purchaser acknowledges that they have no right, title, or interest in the trademarks or copyrights in the products, and purchaser covenants that it will take no action to register or otherwise interfere with such rights. Please contact us with any requests for permission or questions about our trademarks. 

Warranty Disclaimer:

No warranty or affirmation of fact, express or implied, other than expressly set forth herein is made or authorized by Qualitest USA. Qualitest USA disclaims any and all liability for product defect claims. Qualitest USA does not express or imply a warranty that any product on the web site(s) is fit for a particular purpose. Qualitest USA honors the product warranty as published and made available by Qualitest USA. Warranty claims for products not manufactured by Qualitest are the responsibility of the manufacturer. Qualitest USA will always make its best good faith effort to resolve warranty claims. 


Force Majeure:

Qualitest USA shall not be liable for any delay in or impairment of performance resulting in whole or in part from Acts of God, service interruptions, labor disruptions, insurrections, governmental decrees or controls, war risks, severe weather, supplies or raw materials, inability to procure or ship products, inability to obtain permits and/or licenses, or any other circumstances or causes beyond the control of Qualitest USA in the conduct of its business. 

Qualitest USA Privacy Policy 

I. What legal provisions govern our data processing practices? How and from where (internal/external sources) is personal data acquired? What are the rights of the user (web site visitor/registered customer)? 

1. General
As a general principle, no personal details need to be provided when visiting our Internet site. Data made available to us by you is treated in strict confidence and in accordance with the provisions of the Federal Data Protection Act. With a few exceptions (see point 2 below), our web server only registers non-personal (anonymous) data concerning the use of our site. Specifically, the log files of our web server, as a general rule, only contain the user's IP address, the last page visited by the user, the browser used, date, time and the file requested. This anonymous data, however, does not permit conclusions to be drawn about the individual users, and merely serves to prepare statistics on the use of our Internet site for the purpose of its improvement. At the same time, great importance is placed on ensuring that usage data is not linked with personal data. 

2. Personal data

Person-related data (personal data) is only used if the newsletter is ordered (by email), product(s) is (are) ordered, or to supply product information. We undertake to use the personal data entrusted to us only for the purposes stated. Purchase history is retained for assistance with future customer needs. 

II. What security measures are used to protect personal data? What are the user's options for processing personal data? 

3. Technical measures

Databases are optimally protected against third party access, loss, misuse and falsification through the use of appropriate technical means. In order to determine the popularity of individual topic areas, cookies are used in those sections. These text files are stored on your hard disk and facilitate your use of our Internet site. Thanks to these cookies, there is no need for specific registration each time you visit a section requiring registration, and we can supply you with the personalized contents you request. 

It is for you to decide whether you want to work with cookies and, if so, which kind (permanently stored on the hard disk or only placed for the time of the browser activity). However, we draw your attention to the fact that access to fields requiring registration is only possible with activated cookies. 

III. What data is communicated to third parties and for what purposes? 

4. Communication of personal data

Personal data entrusted to us by you is not communicated, leased or sold to third parties. 

IV. Which department answers questions about the processing of personal data? 

5. Contact

In the light of the rapid technical developments in connection with the Internet, we make every effort to constantly improve our Internet site and technical precautions, including those connected with data protection. We will keep you suitably informed about such measures. Any changes will be published here. Further information is available at any time by contacting Qualitest USA.

Disclaimer of liability Qualitest USA shall not be liable for direct, indirect or consequential losses resulting from or in connection with access to, use of or queries to the Qualitest web site or its links with other web sites, even if Qualitest USA has previously been informed of the possibility of such losses. No guarantee is provided as to the accuracy of the information disseminated via the Qualitest USA web site. In addition, Qualitest USA guarantees neither the reliability nor the completeness of the information contained on its web site. The information made available on the Qualitest and WorldofTest.com web site may be amended at any time without prior notice. In particular, Qualitest USA shall not be liable for losses caused by transmission errors, technical faults and interruptions, breakdowns or an unlawful interference with the user's data processing system or the generally accessible systems and transmission networks. Nor shall Qualitest USA be liable for losses resulting from breakdowns, interruptions or overloads occurring to any data processing systems. If certain links are activated on the Qualitest and WorldofTest.com web site, the user may under certain circumstances leave the Qualitest web site. Qualitest USA assumes no responsibility for the contents, products or services offered or other information or offers contained on these linked web sites. 

Related Products