Author: Besser, Jörn
Last saved by: Lohmann, Melanie
Company: HP

SPECIFICATION TEXT
Carbofol^® HDPE 406 2,0 s/s

Pos.: ……. Quantity: …..…… Unit Price: ……………. Total Price: ………………… 

Supply of HDPE geomembrane (GBR-P) Carbofol^® HDPE 406 2,0 s/s, made by Naue GmbH & Co. KG, or equivalent. The following parameters have to be considered for proof of equivalency:

Thickness:
nominal -5% (DIN EN 1849-2)

2,0 mm

Roll width: | min. 7,5 m

Surface properties 
(top side / bottom side):

smooth / smooth

Oxidative Induction Time (OIT)
(EN 728 / ISO 11357-6)

≥ 100 min

Stress crack resistance - NCTL
(ASTM D5397)

≥ 500 h

Carbon Black Content
(ASTM D4218)

2-3 %

Carbon Black Dispersion
(ASTM D5596)

Category 1-2

The HDPE geomembrane must be made by flat die extrusion method. HDPE geomembranes from blown film lines are not admissible.
Where the symbol ≥/≤ is used then this means that if a strip of the product is taken across the whole roll width at any point along any roll, then the average of the tests carried on the coupons taken from this sample shall be equal to or better than the value given after this ≥/≤ symbol.
During the manufacturing of the liner, the following parameters shall be tested in the laboratories at the factory where the liner is made: Thickness, width, density, melt flow rate, carbon black content and distribution, NCTL and OIT to the above test methods. Products from a manufacturer which cannot carry out these tests in its own laboratory shall not be approved. The testing shall be in accordance to EN 10204. The results shall be submitted on one certificate per roll supplied.

Before the contractor shall order the geomembrane, he shall provide the Engineer with a technical data sheet for the product he intends to purchase for the Engineer’s written approval.
The material must be CE marked according to the rules concerning the application of CE marking and subject to a system type 2+ for the assessment and verification of the constancy of performance (AVCP). Each roll must be individually identified through a unique serial number and recorded in the delivery documents. The producer must be ISO 9001 certified and must be able to prove that his factories / products are periodically checked by an independent notified body.
The geomembranes must be installed by a certified installation company as per manufacturer´s installation guideline. The respective standards for welding HDPE geomembranes have to be obeyed.
Quality assurance
•	Manufacturer has to be certified according to EN ISO 9001 and ISO 14001
•	Product needs to provide CE marking
•	Durability (Annex B) of 25 years for exposed use as per Declaration of Performance (DoP).
•	Proof of EPD (Environmental Product Declaration) for the product group

Proof of Delivery (POD):
Carbofol^® HDPE 406 s/s
Naue GmbH & Co. KG
Gewerbestraße 2
32339 Espelkamp-Fiestel, Germany
Tel.: +49 5743 41 - 0
Fax: +49 5743 41 - 240
E-Mail: info@naue.com 
www.naue.com 
 Status: 02.03.2022