a2la acreditationETL specialise in physical testing of rootzone and other sportsturf construction materials. We offer a wide range of testing services for all golf courses and sportsturf needs.

We are an accredited laboratory in the field of Geotechnical (Putting Green Materials), Certificate No. 903-01, through the American Association for Laboratory Accreditation (A2LA).

ETL is accredited to conduct the following tests that appear on our Scope of Accreditation:

ASTM C136 Sieve Analysis of Fine and Coarse Aggregates
ASTM C702 Reducing Samples of Aggregate to Testing Size
ASTM D854-98 Specific Gravity of Soils
ASTM D2216 Laboratory Determination of Water (Moisture) Content of Soil & Rock
ASTM D2974 Moisture, Ash and Organic Matter of Peat and Other Organic Soils
ASTM D2976 pH of Peat Materials
ASTM D4972 pH of Soils (Method A)
ASTM D5550 Specific Gravity of Soil Solids by Gas Pycnometer
ASTM F1632 Particle Size Analysis and Sand Shape Grading of Golf Course Putting Green and Sports Field Root Zone Mixes
ASTM F1647 (Method A) Organic Matter Content of Putting Green and Sports Turf Zone Mixes
ASTM F1815 Saturated Hydraulic Conductivity, Water Retention, Porosity, Particle Density and Bulk Density of Putting Green and Sports Turf Root Zones
ETL Method No. 290 Particle Size Distribution (Sand) Test
ETL Method No. 291 Particle Size Distribution (Sand) – PSD Half Octave
ETL Method No. 292 Particle Size Distribution (Gravel) – PSD Half Octave

Latest News

Organic Matter Testing #3

In this, our third article on organic matter, agronomist, Charles Henderson will cover the complex subject of its reduction. Organic matter, in general, is on the increase. Therefore, this makes the reduction of organic matter in greens, relevant to over 90% of us who are involved in managing golf (and bowling) greens, an extremely important subject. Read More.

Organic Matter Testing #2

In part two of our organic matter series, Charles Henderson discusses the relationship between moisture content and the organic matter accumulation in our greens. We will also look at how this affects some of the management decisions we make when trying to manage both moisture and organic matter content in our greens. Read full article

Organic Matter Testing #1

Organic matter or the build-up of thatch, remains a dominant issue across many sports disciplines, but has our knowledge and understanding of it moved with the times? Read full article

ETL offering Golf Green Health Indexing packages

Please visit our Golf Green Health Indexing page for full details

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