EN 1937:1999

• Abstract:

  This European Standard specifies the procedure for mixing hydraulic setting smoothing and/or levelling compounds with water and/or a liquid component as supplied by the manufacturer.

• Status: Published
• Publication Date: 21-Sep-1999
• Withdrawal Date: 30-Mar-2000
• ICS: 91.100.99 - Other construction materials
• Technical Committee: CEN/TC 193 - Adhesives
• Drafting Committee: CEN/TC 193/WG 4 - Building adhesives
• Current Stage: 9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
• Start Date: 06-May-2024
• Completion Date: 09-Sep-2026
• Ref Project: SIST EN 1937:2000 - Test method for hydraulic setting floor smoothing and/or levelling compounds - Standard mixing procedures

• Refers: ISO 554:1976 - Standard atmospheres for conditioning and/or testing — Specifications
• Effective Date: 03-Jun-2026
• Refers: EN 915:1996 - Gymnastic equipment - Asymmetric bars - Functional and safety requirements, test methods
• Effective Date: 28-Jan-2026
• Refers: EN ISO 15605:2004 - Adhesives - Sampling (ISO 15605:2000)
• Effective Date: 28-Jan-2026
• Refers: EN 1067:2005 - Adhesives - Examination and preparation of samples for testing
• Effective Date: 28-Jan-2026
• Refers: EN 196-1:2016 - Methods of testing cement - Part 1: Determination of strength
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 16000-11:2024 - Indoor air - Part 11: Determination of the emission of volatile organic compounds from samples of building products and furnishing - Sampling, storage of samples and preparation of test specimens (ISO 16000-11:2024)
• Effective Date: 28-Jan-2026
• Referred By: EN 13872:2004 - Methods of test for hydraulic setting floor smoothing and/or levelling compounds - Determination of dimensional change
• Effective Date: 28-Jan-2026
• Referred By: EN 13408:2002 - Methods of test for hydraulic setting floor smoothing and/or levelling compounds - Determination of bond strength
• Effective Date: 28-Jan-2026
• Referred By: EN 13409:2002 - Methods of test for hydraulic setting floor smoothing and/or levelling compounds - Determination of setting time
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 16000-11:2006 - Indoor air - Part 11: Determination of the emission of volatile organic compounds from building products and furnishing - Sampling, storage of samples and preparation of test specimens (ISO 16000-11:2006)
• Effective Date: 28-Jan-2026
• Referred By: EN 12706:1999 - Adhesives - Test methods for hydraulic setting floor smoothing and/or levelling compounds - Determination of flow characteristics
• Effective Date: 28-Jan-2026
• Revised: prEN 1937 - Adhesives - Test method for cementitious and calciumsulfate-based floor levelling compounds - Standard mixing procedures
• Effective Date: 08-May-2024

Overview

EN 1937:1999 is a CEN (European Committee for Standardization) test standard that defines standard mixing procedures for laboratory testing of hydraulic setting floor smoothing and/or levelling compounds. The standard specifies how to mix these powdered products with water and/or any liquid component supplied by the manufacturer to ensure reproducible test specimens and comparable test results across laboratories.

Key topics and requirements

The standard focuses on establishing consistent, repeatable mixing and sample-preparation practices. Key technical topics typically covered include:

• Standardised mixing procedure for hydraulic setting smoothing and levelling compounds (powder + water or manufacturer-supplied liquid).
• Use of specified equipment and mixing tools to reduce variability between tests.
• Sequence and method of addition (order of powder, water/liquid, and any admixtures) to produce a representative mix.
• Mixing time and technique to achieve consistent workability and homogeneity (procedural requirement, not specific performance values).
• Ambient conditions and sample conditioning (temperature, humidity) to support reproducibility of test results.
• Documentation and labelling of batch, mix proportions, and mixing parameters to support traceability and test reporting. Note: EN 1937 prescribes the procedural approach rather than product performance limits; exact numeric parameters (ratios, times) are those specified within the standard text or by the product manufacturer.

Applications

EN 1937 is intended for use where controlled laboratory mixing is required for subsequent testing of floor smoothing and levelling materials. Typical applications include:

• Laboratory test preparation for mechanical, physical and durability tests of levelling compounds.
• Quality control and batch verification by manufacturers.
• Product development and comparative testing of formulations.
• Preparation of samples for conformity testing and certification processes.
• Research studies on cementitious and hydraulic floor finishes.

Who uses this standard

• Manufacturers of hydraulic setting floor smoothing and levelling compounds
• Independent testing and calibration laboratories
• Product certification bodies and conformity assessors
• R&D teams and material scientists working on floor levelling products
• Flooring specifiers, consultants and quality managers involved in construction-material testing

Related standards

EN 1937 is part of the broader suite of CEN/EN standards addressing cementitious materials, floor screeds and laboratory test methods. For project-specific compliance, pair EN 1937 mixing procedures with applicable performance and test standards for flooring materials.

Keywords: EN 1937, test method, hydraulic setting, floor smoothing, levelling compounds, standard mixing procedures, CEN, laboratory mixing, quality control.

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